Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Chapter 21.2, Problem 1CSC
Just as the invasive Cauterpa seaweed often spreads uncontrollably when introduced to environments free of its normal predators and
Sometimes, a protist released into a new environment has a damaging impact not because it overwhelms an ecosystem but because it directly causes a disease. What are some examples of such an introduced disease among the alveolates?
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Chapter 21 Solutions
Biology
Ch. 21.1 - What do biologists mean when they say that sex and...Ch. 21.1 - define protist and describe the various ways in...Ch. 21.1 - describe a scenario for the evolutionary origin of...Ch. 21.1 - describe the major effects of protists on people...Ch. 21.2 - Prob. 1TCCh. 21.2 - Just as the invasive Cauterpa seaweed often...Ch. 21.2 - If you like sushi, youve probably eaten a sushi...Ch. 21.2 - list the major protist taxonomic groups and the...Ch. 21.2 - describe some examples of how members of each...Ch. 21.2 - Is it important to stop the spread of Caulerpa?...
Ch. 21 - Which of the following statements about protists...Ch. 21 - The harmful protist blooms known as red tides are...Ch. 21 - The organism that causes malaria belongs to which...Ch. 21 - The finger-like extensions of the cell membrane...Ch. 21 - Prob. 5MCCh. 21 - Prob. 1FIBCh. 21 - Prob. 2FIBCh. 21 - Protist chloroplasts surrounded by four-layer...Ch. 21 - Prob. 4FIBCh. 21 - Prob. 5FIBCh. 21 - Prob. 6FIBCh. 21 - List the major differences between prokaryotes and...Ch. 21 - What is secondary endosymbiosis?Ch. 21 - what is the importance of dinoflagellates in...Ch. 21 - What is the major ecological role played by...Ch. 21 - Which protist group consists entirely of parasitic...Ch. 21 - Which protist groups include seaweeds?Ch. 21 - Which protist groups include species that use...Ch. 21 - The internal structure of many protists is much...Ch. 21 - What are some important benefits and services...
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- Which of the following is not a characteristic of dinoflagellates? They are photosynthetic They are cilliated They live in symbiosis with coral They belong to the SAR supergrouparrow_forwardDinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forwardDinoflagellates are unicellular, marine protists. Dinoflagellates are bioluminescent, but only at night. During the day, they carry out photosynthesis similar to other autotrophs. At night, however, they bioluminesce every time they are disturbed. They are often seen in the wakes of ships at night. While the reason for this bioluminescence is not fully understood, many scientists concur that it is a form of self-defense. If small fish begin to feed upon the protists, the protists will begin to bioluminesce. These flashes of light in the dark water can alert larger fish and draw them towards the small fish, upon which they prey. By making the small fish vulnerable, the dinoflagellates are able to protect themselves. Based on the information above, a researcher decides to design an experiment in which she is testing how long it takes for dinoflagellates to recover after different amounts of disturbance. She maintains 10 containers of dinoflagellates with similar temperature, salinity and…arrow_forward
- It is not always easy to categorize a particular case of symbiosis. Suppose a certain species of snail is always found living on a certaincoral. No one has found evidence that the snail harms the coral, sothe relationship is classified as an example of commensalism. Howwould you go about testing this hypothesis? What kinds of observations might lead to the conclusion that the snail is a parasite, or that ithas a mutualistic relationship with the coral?arrow_forwardWhat are the differences between direct and indirect life cycles? Give two (2) representative parasitic helminths species in aquaculture for each life cycle. Why is there a need to study the parasite life cycle?arrow_forwardHow are diatoms and dinoflagellates used in monitoring water quality? Cite two (2) examples. What are zooxanthellae? Describe their role in symbiotic relationships.arrow_forward
- A bloom of dinoflagellates is discovered in Tampa Bay. Sampling on Thursday morning indicates an initial population of 27524 cells/L. If the dinoflagellate has a growth constant of 0.67 d-1, how many cells will be present on Tuesday morning?arrow_forwardYou have discovered a new species aquatic protist that is a primary producer. It cannot swim on its own. It appears to be resistant to physical damage from wave action due to the presence of a glass-like wall. Which of the following organisms would this organism be most like? A) diatom B) dinoflagellate C) apicomplexan D) red algaarrow_forwardEven though genetically engineered mosquitoes might be developed that do not allow the reproduction of malaria protozoa, these mosquitoes would have little, if any, immediate effect on the spread of the disease. Why should this be so? What would have to happen for these mosquitoes to significantly affect the spread of malaria?arrow_forward
- What kind of symbiosis describes the relationship between the small dinoflagellate algae known as zooxanthellae, and the coral they live in? (The waste of the coral fertilizes its garden of zooxanthellae, and the garden feeds the coral) Parasitism Commensalism Mutualism O O Oarrow_forwardThe following are actual mutualistic partnerships that involve a protist and a host organism; which is the exception? Trichomonas and humans Cellulose-digesting gut protists and wood-eating termites Protists living in hypersaline /anoxic waters always associated with bacteria Algae and certain foraminiferans Photosynthetic dinoflagellates and reef-building coral animalsarrow_forwardWhy are Cryptosporidium parvum and cryptosporidium hominis associated with water-borne outbreaks of diseases?Why are water supplies infected in the first place ? thank you!arrow_forward
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