The primordial soup is not organic-rich

a. True
b. False
Indicate whether the statement is true or false


False

Biology & Microbiology

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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

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology

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.

Biology & Microbiology