Introduction to Finance - coursework Research Paper

Introduction to Finance - coursework - Research Paper Example ary if the interest rate in the market goes down to 5 % the investor will try more n more to get a hold on organization's bond since your bond is paying higher interest rates than that prevailing in the market. Therefore the bond prices will go up. Bondprices = (60000 / 2 ) x {1 - (1+ .05 / 2 )-2x15 } / ( .05 / 2) + 1,000,000 / ( 1 + .05 / 2 )2 x 15 = 1104651.463 > 1000,000 (par value) if the bond's prices for a company are going higher It will add value to the name of the company and the stock prices will also go up for such a company f) The Expected rate of reurn = dividend yield + capital gain (Bearly & Myers, 2001) Dividend yield = next dividend payment / current price of the stock = Do x (1 + g) / price of the stock Here, Do = last dividend payment = 3.21 g = 7% price of stock = 75.529 Dividend yield = Do x (1 + g) / price of the stock = 3.21 x (1+ .07) / 75.529 = .04547 Capital gain yield = (P1 - Po) / Po = (73 - 75.529 ) / 75.529 = -0.0334 rate of reurn = 0.04547 - 0.0334 = 0.1199 = 11.99% f) the current valuue of stock: Po = Do (1+g)/(Ks-g) Po = 3.21(1+.07)/(0.1199-.07) Po = 68.83. Recommendations Currently the bonds of the company are being traded at $874,420. this price is very much below the par value of the stock . the bond has a coupon rate of 6% attached to it while the current interest rate prevailing in the market is 7.4152%. the company is offering an interest that is below the prevailing interest rate and hence the investors find a low interest in company's bond which is resulting in the decline of price. "If overall interest rates in the market later fall, prices of existing, higher interest-rate bonds generally will rise. That's because the existing bonds are more attractive to buyers than new, lower interest-rate...Therefore the bond prices will go up. Currently the bonds of the company are being traded at $874,420. this price is very much below the par value of the stock . the bond has a coupon rate of 6% attached to it while the current interest rate prevailing in the market is 7.4152%. the company is offering an interest that is below the prevailing interest rate and hence the investors find a low interest in company's bond which is resulting in the decline of price. "If overall interest rates in the market later fall, prices of existing, higher interest-rate bonds generally will rise. That's because the existing bonds are more attractive to buyers than new, lower interest-rate bonds and, as a result, are typically offered at higher prices (seligman, 2007)". This debt through bonds make the firm risky since it is covering 50% of the total rrquirement by APEX. APEX requires a total financing of $2,000,000 and the bond are issued for $1,000,000. Covering half of your financing requirement through debt exposes the organization to greater risk and reduces the credibility of investors towards organization. Mr. Thinkard should wait for time when the interest rates in the market falls below the coupon rate on bonds. this will cause increase in bond price and Mr.

Grant proposal for skagit conty to prepare Flood awareness brochure in Essay

Grant proposal for skagit conty to prepare Flood awareness brochure in Spanish - Essay Example The project plan helps in sensitizing the people on the response to an emergency and the steps necessary to ensure that they are safe. The plan is expected to capture the audience that mostly do not understand English and feel let put on the local authority disaster management plan due to language barrier. The projects objectives include the Hispanic and Latino community living in Skagit County, Washington for flood disaster that looms in their neighborhood. To achieve the goal, there is a need for the community to understand the sub objectives that supplement the main goal. Identify the warning systems. The warning systems are the media of communication that is accessible to many people. The systems include the radio stations weather channels and warnings from people in the authority. Identify members of the Hispanic and Latino community and create a community directory. Discuss the evacuation procedures in place with the community in regard of what to carry like medicines and clean water. The procedures should be encouraged to be on family levels where the head of the family is to ensure that if an alert is given all the family members are together and leave as a family (Veenema, 2003). The community level involves familiarizing the Hispanic and Latino community on the roles of the police during an evacuation. To discuss the precautions to take during and after a flood in order to avert waterborne diseases. The community will be advised on how the best practices to avert water bone diseases that are common during and after floods in the area. Community resilience is essential and critical in any community. It ensures that when disaster strikes the community recovery and restoration be fast tracked in terms of essential services (OLeary 2004). Community resilience involves identifying and evacuation route in Skagit County. This is done in collaboration with the residents and the authority that best know the area. The process of community

A risk management strategy

A risk management strategy Introduction This report details a risk management strategy for a given organization based on Australian Standards AS4360. Risk Management Strategy details: 1 2. Rationale for managing risks and risk management objectives All companies face risk. The main rationale for managing risk is to reduce the likelihood of project failure, be it financial, schedule or performance based. A formal risk management strategy provides a structured way to highlight threats to a project success. The strategy provides advice to the project team and management to benefit the organization as a whole by assisting in the decision and planning process, identifying opportunities or threats and gaining value from changing situations. The strategy takes a proactive approach to management and allocates resources more efficiently. Reduction of loss can be reduced and stakeholder trust is improved (Australian Standards, 2004). A balance between being able to take action on opportunities versus protecting the company against loss must be decided upon. Risk management should be part of company culture so that everyone in the company has a role to play and is aware of risk management. In the early days insurance was how organizations managed risk but now it is an essential part of all management teams. According to Sadgrove (2005), there are two types of business risk, non entrepreneurial risk and entrepreneurial risk. Non entrepreneurial is for example company fraud, theft or fire. Entrepreneurial risk is for example the opening of a new shop or produces a new product. It is in the best interests for the company directors to manage risk as it applies to all manage decisions. Risk is a pre-condition for innovation, a key ingredient of a successful company (Sadgrove, 2005). Risk management objectives are to reduce company cost, disruption and unhappiness (Sadgrove, 2005). It rates which activities are worth investigating for risk and which activities do not present current risk. By identifying risks earlier, managers can better plan for their possible occurrence in the future. Further objectives and benefits to the company include improved planning, greater resource efficiency, more timely scheduling, prevention reduced costs, improved company reputation, less surprises, enhanced communication between managers and staff, reassurance of stakeholders, higher quality products and more flexible and robust contingency plans (Carol and Elizabeth, 2005). As indicated in AS4360 when formulating objective for a risk management process, they must take into account the internal and external environmental factors (Australian Standards, 2004). Risk management is growing in importance these days for a number of factors. These include tougher legislation, more expensive insurance, customers less likely to accept product failure, higher standards for public image and changing management attitudes to a more global outlook. 3. Risk strategy issues According to Sadgrove (2005), issues covered by a risk strategy may be based on operation, strategic, compliance and financial issues. Operational issues include risks associated with employees, suppliers or natural events such as rain. Strategic issues include other markets, the economy and legal issues. Compliance issues may be accounting standards, tax requirements or government legislation. Financial issues include cost issues, interest rates and profitability concerns. The areas covered by the risk strategy will be influenced by the requirements of the company and its objectives. The products and / or services it supplies and the processes and practices used by the company will also affect the type of risk strategy employed. 4. Acceptable risk tolerance. According to Fischoff, Lichtenstein, Slovic, Derby and Keeney (1981), acceptable risk describes the likelihood of an event that has two factors. Firstly, the chance of occurrence is small. Secondly, the consequence is small. s are so slight, or whose benefits (perceived or real) are so great, that individuals or groups in society are willing to take or be subjected to the risk that the event might occur. The stakeholders and managers often determine acceptable risk factors. It is based on their perception on what they believe constitutes firstly a risk and secondly whether or not it is an acceptable one. An acceptable risk determination can vary and depends on factors such as differences in values, different requirements, project assumptions, concerns, concepts as they relate to the project being considered. According to AS4360, (Australian Standards, 2004), a team approach is very effective in determining and identifying risks more effectively. Risks are compared against a set of criteria from which priorities are set. The decision is then made to either treat the risks if they are deemed unacceptable or to continue to monitor and review the risks if they are currently viewed as acceptable. The risk criteria which is used to determine whether a risk a acceptable or not is based on financial, operational, humanitarian, legal, technical, social, environmental, or other criteria. The risk is evaluated and decisions are made about which risks need attention. The company or organization must make a decision on how much risk it is willing to accept as part of normal business practice. This level can then be set as the benchmark and gives the company a tolerance level to work with. This tolerance may depend on the maturity of the risk management plan, experience of management, data available f or consideration and other important factors. Some firms want to accept new ventures with higher risks while other companies want to maintain a steady course. Often young companies with less to lose will take larger risks where as older individuals may not wish to risk as much (Sadgrove, 2005). The acceptable risk tolerance depends on the reward. As the risk increases so to must the reward in order to make it worthwhile. 5. Risk infrastructure, management, identification, assessment and treatment. A company, which has a risk management strategy in place, needs an appropriate policy plan and an adequate support system in place to ensure the strategy is implemented correctly (Australian Standards, 2004). According to AS4360, in assessing the risks once they have been identified, there are three general types of analysis. These are qualitative analysis, Semi-quantitative analysis and Quantitative analysis. Qualitative analysis may be used as an initial tool to identify preliminary risks which are to be analyzed in more detail later. It should be combined with factual information when it is able to be sourced. Semi-quantitative analysis must be used with care since the data chosen to support the qualitative words may be misleading that can lead to inappropriate outcomes. Quantitative analysis depends on the accuracy of the numerical values and they may be expressed in terms of the criteria initially set by the risk identification. According to an article by the Project Management Institute (Project Management Institute, 2008), if you dont identify risk areas and have a response plan then possible tough times may be ahead. By beginning with a brainstorming session, and including a wide cross-section of stakeholders from many levels throughout the company, possible problems on the way to success may be identified. Ms. Reed, a vice president of an American project management firm notes that when running such meetings criticism should be left at the door, otherwise it may turn into an unorganized discussion. 6. Risk management responsibilities. Risk identification, assessment and treatment. System review, documentation and maintenance. Responsibilities for the risk management process should be detailed in the risk management plan and this plan should also detail how the plan shall be conducted throughout the organization. Treatment plans may either be separate from the risk management plan or included with it. An example of an organization which follows the AS4360 guidelines is the State Records Department of the New South Wales Government in Australia (NSW Government State Records. 2009). With their plan, senior management are allocated the responsibility of ensuring that the risk analysis, identification and assessment procedure are implemented regularly. They are also responsible for managing the budget allocated for the risk management strategy and ensuring that it is implemented to protect the records and systems of the State Records Department. The review of their systems is continuous as is stated in the AS4360 guidelines. According to the AS4360 guidelines (Australian Standards, 2004), few risks remain static. Continual review is essential to ensure that the risk management strategy remains relevant. The Risk Assessment will be continuously monitored and updated throughout the life of a given project, with monthly assessments included in the status report and open to amendment by the Project Manager. The company senior directors and executives are responsible for managing risk in their organization. All employees are responsible for the risk management within their given areas of managerial responsibility. The risk management plan can be broken down into specific sections based on different functions and areas within the project. Each area should have a separate plan, consist with the main company risk management plan, that details risks most relevant for their particular team and sub project requirements and concerns. The project manager for each team is responsible for the management of each risk management plan and ensuring his or her team is under the watch of the localized plan. This manager must also however ensure that the risks of the organizational risk management plan are also kept in mind. The senior staff of an organization must also be committed to the risk management strategy of all these senior managers (Australian Standards, 2004). Documentation to record details of risks must be generated to record priorities and highlight changes in risk priorities. Reports should record treatments and if incidents occur the lessons learned should be recorded. The entire risk management plan system progress should also be documented as a whole. 7. Risk management documentation requirements. A common tool used in the documentation of risk management system is the risk matrix. The risk matrix is a table used in risk analysis in which rows show the risks and columns show their likelihood or probability of occurrence and their impact. For each important business function or area, a risk matrix can be created. Often numerical values from one, meaning no impact, to five, meaning maximum impact, can be assigned for each function. This simple approach to documenting risk can provide a useful set of raw data from which appropriate plans can be devised. Many larger organizations also use this simple approach (National Computing Centre, 2009). 8. Risk management system budgets and its determination. Such a risk management strategy has a cost associated with it and this cost must be balanced against the cost of the potential loss if it were to occur (Microsoft Press, 2009). Through the application of risk management methodologies, a company can manage risk levels so that it does not reach a determined unacceptable level. The budget size for a risk management system will of course depend on the size of the company, its complexity and the responsibilities of the manager in charge of the risk management program (Sadrove, 2005, p55). A good policy is to make the risk management services free to departments and only charge the departments when they make a loss. By charging them when mistakes are made the managers are more likely to seek help and pay more close attention to the risk management strategy. This is better than just waiting for an issue to occur. Too much investment in risk management will burden the company and make it uncompetitive. Underinvestment in risk management will make it more vulnerable and likely to receive expensive incident costs. The optimal position is somewhere in the middle (Sadgrove, 2005, p14). Mochal (2006), shows that a risk management system budget can be established by basing it on the Expected Monetary Value (EVM) index. For each risk there are two parameters assigned. Firstly, the probability that the risk will occur and secondly the impact to the project if the risk occurs. If this is completed for all the risks the potential impact to the project can be calculated. Hence the risk management system budget should reflect the impact of the risk and the likelihood that it will happen. According to AS4360, if the budget for the risk management system is restricted, there should be a clear priority order for the risk treatments. 9. Risk management policy approval and its source. Senior management should review and endorse the risk management policy for an organization. The source of the policy should come from all higher end managers concerned as well as all concerned stakeholders. Dialogue with key internal and external stakeholders should be undertaken as to avoid a one way flow of information. Stakeholders often have different views on what should be ranked as high-risk priorities due to factors such as differences in values, requirements concepts and concerns about the project concerned (Australian Standards, 2004). References Alexander, C., Sheedy, E. 2005. The Professional Risk Managers Handbook: A Comprehensive Guide to Current Theory and Best Practices. PRMIA Publications. Fischoff, B.; Lichtenstein, S.; Slovic, P.; Derby, S. L.; and Keeney, R. L. 1981. Acceptable Risk. Cambridge. UK, Cambridge University Press. Microsoft Press. 2009. Why Manage Risks Formally? Retrieved on 5th October, 2009 from http://msdn.microsoft.com/en-us/library/cc500373.aspx Mochal, T. (2006). Create a risk contingency budget using Expected Monetary Value (EMV). Retrieved on 5th October, 2009 from http://articles.techrepublic.com.com/5100-10878_11-6069576.html National Computing Centre. 2009. A matrix approach to risk assessment. Retrieved on 5th October 2009 from http://www.nccmembership.co.uk/pooled/articles/BF_WEBART/view.asp?Q=BF_WEBART_113283 NSW Government State Records. 2009. Risk Assessment. Retrieved on 5th October, 2009 from http://www.records.nsw.gov.au/recordkeeping/government-recordkeeping-manual/guidance/guidelines/guideline-5/guideline-5-part-3 Project Management Institute. 2009. Risk Identification Uncover project troubles before they blow up. Retrieved on 5th October 2009 from http://www.pmi.org/Pages/Risk_Identification.aspx Sadgrove, K. (2005). The complete guide to business risk management. England, Gower Publishing Limited. Standards Australia. 2004. Australian/New Zealand Standard AS 4360 2004. Australia, Standards Australia International Limited.

God: Truth Or Myth :: essays research papers fc

While in High School I encountered all different kinds of people. Some were nice, others were not, and there was always that small group of guys that always voiced their opinion and let others know what was on their minds. No matter what others thought or felt of their opinion. My friend Ray was one of those people. Ray was a very easygoing guy; he never started any trouble, never disrespected anyone, and never quit. He always excelled in everything he did, he never let himself quit any activity no matter how hard it was, and if he got a low grade he would practice the material until he got it down pact. I remember one time -when he and I were taking the same English 101 in high school- when he got back a three page essay and the teacher gave him a B-. Ray almost immediately asked if he could re-do it and the teacher allowed him and anyone else who wanted to re-do it. If it had been me, I would have settled for the B- but no not Ray, he took it back re- wrote it and got himself and A+. I remember him saying after getting back the paper: "That's the way I like it!" We all laughed and congratulated him. Though the class was boring we all did pretty good. I am a strong believer in God and am very active in my church. Whereas Ray believes there is no God and that the church is all a bunch of "Bullcrap." He is a Darwinist, and a stubborn one at that. The ironic part about this whole situation is that Ray's mother is an extremely dedicated Christian. I have only met her once so I will refrain from going any further with the mentioning of Ray's mother. Ray and I have had many debates on whether God exists or not. I recall one evening when Ray came over my house-I had a couple of Christian friends who were already there, it almost seemed as if we were going to verbally ambush him- and almost immediately a debate sparked up amongst the one Darwinist and the other four Christians. That was one of our best debates, we must have spent two or three hours babbling on about God and Dawin's theory of evolution. Unfortunately he had to leave so we could not finish our debate, but I believe there will be a time when we will meet to fi nish our little event.

Loctite Company Essay

1) What is Loctite’s distribution strategy? What are the different distribution channels which are used by Loctite? Loctite’s distribution strategy is to reach a worldwide sale capability in the chemical adhesives industry. Loctite wants to offer a full range of sealant and adhesive products which meet the different needs of its customers. The company provides a great support to distributors, training the distributor’s salespeople, demonstrating new products in seminars, and explaining cases where the product has been used. The different distribution channels are through independent distributors, representative offices, exports agents, joint ventures, acquisitions of others distributors and subsidiaries. 2) How does Loctite’s channel strategy differ between the domestic North American market and international markets? In North America, Loctite sells approximately through 1,600 outlets across all over the country. Distributors ranged from small outlets to Loctite’s biggest customers. Loctite focused in selective distribution that is the reason for not being represented in most of the 50,000 potential outlets. The selective distribution allows a superior level of service for its customers, adding more value to the product. Loctite always looked for two or three distributors representing the same market, so its customers had the choice of a different supplier. Distributor had a attractive return, which is between 30% to 35% of margin. The industrial distributors were structured into 12 regions. The international market strategy was in some cases made by shipments under licensing agreements, e.g. in Japan. All products sales were made by overseas sales before the constructions of manufacturing plants. Some acquisitions and joint ventures helped to achieve a faster international expansion. Loctite acquired equity interests in its distributors around Europe. Loctite’s strategy was to penetrate in a country market with a  relationship with a distributor, and increasing stake in this market, and eventually getting the business ownership. 3) What factors are driving Loctite’s acquisition of its international distribution channels? Loctite’s acquisitions of its international distribution are driven in the most of the cases by the slow sales growth. Once a distributor establishes its business and its market share, it gets satisfied with the margin of the sales, and many times do not reinvest its profits in the business. It generates neither a higher growth nor a raise in the market share. Some distributors do not allow Loctite to have an active participation in their sales, and cash flow statements, so reinforcing Loctite to acquire the company. 4) What should Loctite do about distribution in Hong Kong? Loctite should reinforce its policy in its distributor in Hong Kong. Loctite should try to work together with this local distributor, trying to explain Loctite’s policies and improve the communication. The business, the goals, and the results expected for that distributor has to be clarified. Loctite’s P.R.C joint venture should meet with the distributor so they could specify a price range where both of the companies could make a better profit. Both companies have to analyze the market penetration so it is not penalized because of high prices, and neither the quality because of price war between those two seller companies. And Loctite should start to sell in China market.

Kingdom Protista

Kingdom Protista: Characteristics Mostly unicellular, eukaryotic cells Reproduce asexually or sexually by conjugation Exhibit all three modes of nutrition Photosynthesis Ingestion Absorption Ultimately spawned all multicellular kingdoms Very diverse kingdom Difficult for taxonomists to agree on classification Diverse Modes of Nutrition Use diverse modes of nutrition Ingest food Absorb nutrients from surroundings Photosynthesis Protists that ingest food are typically predators Use extensions of cell membrane called psuedopods to surround and engulf prey item Diverse Modes of NutritionProtists that absorb nutrients directly from the surrounding environment can be Free-living types in the soil that decompose organic dead matter Parasites that live inside the bodies of other organisms, sometimes harming the host Diverse Modes of Nutrition Some protists have photosynthetic organelles called chloroplasts Photosynthetic protists are abundant in oceans, lakes, and ponds Free floating Mutuall y beneficial associations with other organisms: solar energy captured by the protist is used by host, which shelters and protects the protist Diverse Modes of NutritionPhotosynthetic protists are collectively known as algae Single-celled, non-photosynthetic protists are collectively known as protozoa Diverse Modes of Reproduction Most protists reproduce asexually by mitotic cell division Some also reproduce sexually Two individuals contribute genetic material to an offspring that is genetically different from either parent Occurs during certain time of year or circumstances (e. g. a crowded environment or a food shortage) Protist Reproduction Asexual Sexual (a) (b) Effects on HumansPositive impact – ecological role of photosynthetic marine protists (algae) capture solar energy and make it available to the other organisms in the ecosystem release oxygen gas Negative impact – many human and plant diseases are caused by parasitic protists Major Groups of Protists Protist classification is in transition Genetic comparison reveals evolutionary history of organisms Genetic, instead of physical features now separate protist species into different lineages Some physically dissimilar species are now placed in a common lineage The Excovates Lack mitochondriaTwo major groups Diplomonads: have two nuclei and move about by means of multiple flagella Parabasalids: live inside animals Parabasalids Mutually beneficial relationships with other species Parabasalid inhabits gut of termite Termite delivers food to parabasalid, which digests and releases nutrients to termite Parabasalids Harms host species Trichomonas vaginalis causes the sexually transmitted disease trichomoniasis Trichomonas inhabits urinary and reproductive tracts, using flagella to move through them Causes vaginal itching and discharge in females The EuglenozoansHave distinctive mitochondria Two major groups Euglenids Kinetoplastids Euglenids Single-celled, fresh-water protists Lack a rigid outer covering Best known example is Euglena Moves by whipping single flagellum Photosynthetic Some euglenids photosynthetic, others absorb/engulf food Euglenids Photoreceptor (eyespot) found in some euglenoids Provides for a way to sense location of light source Useful for photosynthetic euglenoids in maximizing photosynthesis Euglena : a Representative Euglenoid Flagellum Eye Spot Contractile Vacuole Stored Food Nucleus Nucleolus Chloroplasts KinetoplastidsAll species have one or more flagella Can be used for propulsion, sensing, or food gathering Many are free-living in soil and water Kinetoplastids Some species live in a symbiotic mutualistic association within another organism Some species digest cellulose in termite guts Trypanosomes live within tsetse flies and cause African sleeping sickness in fly-bitten mammals Trypanosomes infect the blood causing African sleeping sickness Trypanosomes in Blood The Stramenophiles Have fine, hair-like projections on flagella Mostly single-celle d but some multicellularSome are photosynthetic species Major stramenophile groups Water molds Diatoms Brown algae Water Molds Also known as oomycetes Long filaments aggregated into cottony tufts Many are soil and water-based decomposers Water Molds Profound economic impacts caused by water molds Late blight attacks potato plants (caused Irish potato famine in 1845) One species causes downy mildew (nearly destroyed French wine industry in 1870s) A Parasitic Water Mold Downy mildew on grapes Diatoms Found in both fresh and salt water Photosynthetic Produce shells of silica that fit togetherDiatomaceous earth is deposits of diatom shells (mined and used as an abrasive) Diatoms Part of floating phytoplankton community Important in absorbing CO 2 and producing O 2 Phytoplankton perform 70% of all photosynthesis Diatoms are important as food in marine food webs Herbivorous organisms â€Å"graze† on these â€Å"pastures of the sea† Brown Algae Form multicellular aggregates ( seaweeds) Superficially similar but not closely related to plants Contain brownish-yellow and green (chlorophyll) pigments producing brown/olive appearance Brown Algae Nearly all marineFound along rocky shores of temperature oceans Includes giant kelp Several species use gas-filled floats to support body Giant kelp forests provide food and shelter for sea animals Diverse Brown Algae Fucus sp. Giant Kelp The Alveolates Single-celled protists with small cavities beneath cell surface (alveoli) Comprise a distinct lineage Nutritional modes include photosynthetic, parasitic, and predatory The Alveolates Major alveolate groups Dinoflagellates Apicomplexans Ciliates Dinoflagellates Mostly photosynthetic Two whip-like flagellaMost species live in salt water Some species bioluminescent Certain specialized dinoflagellates live within coral, clam, and other protistan hosts Cell wall resembles armored plates Dinoflagellates & Red Tide Red Tide Dinoflagellates Nutrient-rich water causes populati on explosion called â€Å"red tides† Substantial fish kills result from oxygen depletion and clogged gills Oysters, mussels, and clams benefit from large food supply but may accumulate nerve poison Lethal paralytic shellfish poisoning in humans may result from eating these shellfishApicomplexans Also known as sporozoans All members are parasitic Form infectious spores Spores transmitted between hosts by food, water, or insect bites Apicomplexans Complex life cycle (e. g. Plasmodium- malarial parasite) Parasite passed to human by Anopheles mosquito Plasmodium develops in liver, makes spores in red blood cells (causing fever upon release) New mosquitoes acquire parasite while feeding on blood Plasmodium quickly evolves resistance to drugs Ciliates Inhabits both fresh and salt waterHighly complex unicellular organization Specialized organelles Cilia that propel cells through water at 1 mm/s Ciliates Examples of ciliate complexity Paramecium (contractile vacuoles, nervous system) Didinium (predator of other microbes) Paramecium has vacuoles and cilia The Complexity of Ciliates Macronucleus Micronucleus Food Vacuole Oral Groove Contractile Vacuole Cilia Food Vacuole forming The Cercozoans Cercozoans have thin, threadlike psuedopods, which extend through hard shells in some species Cercozoans includeForaminifera Radiolarians The Cercozoans Foraminiferans produce elaborate calcium carbonate shells with holes Deposits of fossilized foraminiferans form chalk Radiolarians have silica shells Heliozoans The Amoebozoans Amoebozoans move by extending finger-shaped pseudopods, also used for feeding Inhabit aquatic and terrestrial environments Generally do not have shells The major groups of amoebozoans are Amoebas Slime molds The Amoebozoans Amoebas Found in freshwater lakes and ponds Predators that stalk and engulf preyOne species causes amoebic dysentery The Amoebas The Slime Molds Distinctly unique lineage among protists Physical form blurs distinction between a co lony versus an individual The Slime Molds Two-phase life cycle Mobile feeding stage Stationary, reproductive stage forming a fruiting body Two main types Acellular Cellular Acellular Slime Molds Also known as plasmodial slime molds Composed of a thinly spread cytoplasm with multiple diploid nuclei Plasmodial mass feeds on bacteria and organic matter by engulfing them Acellular Slime MoldsCan form bright yellow or orange masses Dry conditions or starvation stimulate fruiting body formation Haploid spores produced Spores disperse and germinate into a new plasmodium The Acellular Slime Mold Physarum (a) (b) Cellular Slime Molds Live in soil as independent haploid cells Pseudopodia surround and engulf food (like bacteria) Cellular Slime Molds Food scarcity creates a pseudoplasmodium Individual cells release chemical signal if food is scarce Dense, slug-like aggregation of cells forms Slug† crawls towards light, forms a fruiting body Haploid spores produced are dispersed to form ne w single-celled individuals The Life Cycle of a Cellular Slime Mold Single, amoeba-like cells emerge from spores, crawl, and feed. When food is scarce, cells aggregate into slug-like mass called pseudoplasmodium. Pseudoplasmodium migrates toward light, forms fruiting bodies; produces spores. fruiting bodies spores nucleus The Red Algae Multicellular, photosynthetic seaweeds Pigments combined with chlorophyll produce bright red to black appearances Found exclusively in marine environmentsThe Red Algae Very common in deep, clear tropical waters Red pigments absorb deeply penetrating blue-green light Can therefore live deeper than other seaweeds The Red Algae Diversity of forms and uses Some species deposit calcium carbonate Some species harvested for food Energy captured by red algae important in food chains Products extracted from red algae include: Carrageenan (stabilizing agent) Agar (substrate for bacteria in petri dishes) The Red Algae Multicellular, photosynthetic seaweeds, rang ing in color from bright red to nearly black Live in clear tropical oceansSome species deposit calcium carbonate, which contributes to the formation of reefs Red Algae The Green Algae All species photosynthetic Both multicellular and unicellular species Found in both freshwater and marine environments Some form long filamentous chains of cells (e. g. Spirogyra ) Spirogyra: A Green Algae The Green Algae Some form colonies of clustered cells (e. g. Volvox ) Mostly microscopic forms but Ulva (sea lettuce) is a multicellular leaf-sized green algal seaweed The Green Algae Green algae are closely related to plantsThe earliest plants may have been similar to today’s multicellular green algae Protists and Life Marine phytoplankton: 70% of all photosynthesis Diatoms – abrasive products and oil reserves Sarcodines and limestone deposits Protists and disease Water molds – downy mildew, late blight of potato Dinoflagellates and â€Å"red tide,† shellfish poisoning Zo oflagellates – African sleeping sickness, Giardia Sarcodines – amoebic dysentery Sporozoans – Plasmodium and malaria Giardia: the Curse of Campers