On food nutrition labels, dietary fiber is listed. What is dietary fiber?
a. maltose
b. fructose
c. cellulose
d. glucose
c. cellulose
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What do scientists attribute to the remarkable survival abilities of the tardigrades?
a. like a virus, they are not truly alive b. the ability to mutate their DNA intentionally c. unique protective proteins that replace the water in their cells d. they are alien life visiting this planet
Which group of organisms are likely to live in the low tide zone?
a) Hermit crab, rock weed, sea lettuce b) Rock louse, periwinkle, limpet c) Buckshot barnacle, striped shore crab d) Sea star, brittle star, sea urchins
Spermatogenesis
A. occurs in the seminiferous tubules. B. begins at birth. C. involves one cell dividing into 4 by mitosis. D. produces a few hundred cells per day.
Suppose five boats are adrift at sea, each one containing a number of your relatives, and you have the power to save one boat from a dire fate. According to kin selection theory, it would be in the best interest of your genome to save a boat that contains: (hint: sum of the r values and pick the answer with the highest)
A. two of your brothers. B. both of your parents. C. one sister, one half-brother, and three cousins. D. seven of your cousins. E. four half-siblings.