What is the greatest know mass extinction to date?
a. K–T mass extinction c. Triassic mass extinction
b. Permian mass extinction d. Devonian mass extinction
B
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Animals transitioned from water to land through a series of significant morphological and physiological changes. Which of the following did not contribute to the transition?
A. the ability to breathe air B. the evolution of appendages that could support the weight of the body C. the evolution of jaws for better prey capture and feeding
In the Olestra potato chip experiment, the
result was
a. Olestra potato chips cause cramping. b. potato chips without Olestra cause cramping. c. there was no evidence that Olestra caused cramping. d. watching movies cause cramping. e. people should not eat potato chips.
Which is true about the FTO gene?
A) If you carry it, you will be obese. B) If you carry it, you will have a high metabolism. C) It can be turned off with a diet high in B vitamins. D) It can be turned off with a diet higher in fat.
Identify two specific polysaccharides and describe where they are found and what their biological role is.