The founder effect and bottleneck effect are examples of ____________, an evolutionary mechanism by which the gene pool of a small population changes due to chance.
Fill in the blank(s) with the appropriate word(s).
Answer: Genetic drift
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In order to lose weight and reduce body fat, a friend of yours has decided to eliminate all fat from his diet, while consuming unrestricted amounts of carbohydrates. What do you think of this idea?
A. It is a good idea, because if your friend doesn't eat any fat, he cannot store any additional fat. B. It is a bad idea, because consumption of fat is required to provide cofactors for the electron transport chain. C. It is a good idea, because under conditions where ATP levels are low in cells, carbohydrates will be stored, and fat stores will be catabolized via beta-oxidation to generate energy. D. It is a bad idea, because if ATP levels are high in cells, excess acetyl-CoA from the metabolism of carbohydrates can be used for fatty acid synthesis. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about consuming carbohydrates and weight loss? Is excessive carbohydrate intake a good or bad idea? What other information is related to the question? Choose Answer Do you have all the information needed to determine whether or not excessive consumption of carbohydrates will help or harm your friend? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Colonization rates from one habitat patch to another are ____ and extinction rates within habitat patches are ____ in
contiguous habitats than on islands.
a. lower; lower b. lower; higher c. higher; higher d. higher; lower e. even; lower
Prokaryotic cells are smaller than eukaryotic cells. What is a plausible explanation?
A. Prokaryotes lack the genetic material needed for protein synthesis. B. Prokaryotes have more diverse energy sources. C. Eukaryotes have compartmentalization, which allows for specialization. D. Prokaryotic cell walls limit their cell growth. E. Eukaryotes are immobile allowing them to grow larger.
A physician visiting a rural Latin American village finds that many mature males but few immature males or females of any age are afflicted by a particular fungal disease. What is likely to be the diagnosis?
A. Paracoccidioidomycosis B. Blastomycosis C. Mycetoma D. Histoplasmosis E. Mucormycosis