The primordial soup is not organic-rich
a. True
b. False
Indicate whether the statement is true or false
False
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Ion gradients established across membranes by V-type ATPase pumps range from
A) 1–10-fold B) 10–100-fold C) 10–1000-fold D) 1–1000-fold E) 10–10,000-fold
At the bottom or base of a pyramid of energy are the
a. primary producers. b. secondary producers. c. primary consumers. d. secondary consumers. e. tertiary consumers.
The accompanying figure represents Lack's hypothesis on clutch size. According to this hypothetical data, ________
A) the probability of survival for individual nestlings decreases linearly with each successive increase in the clutch size B) the probability of survival for individual nestlings increases, then decreases with each successive increase in the clutch size C) the optimal clutch size in terms of survival rates is intermediate D) A and C are both true. E) All of the above are true.
Injecting fibroblasts with anti-Ras antibodies that inactivate Ras proteins increases cell division
response to growth factors. __________________ Indicate whether the statement is true or false.