All of the following features are true of Anthropoids except
A. they include monkeys, apes, and humans.
B. almost all were diurnal.
C. opposable thumbs.
D. living in groups with complex social interactions.
E. changes to eye design and increase in brain size.
C. opposable thumbs.
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Lactobacillus grows optimally at ________ pH.
A. slightly alkaline B. very acidic C. neutral D. slightly acidic
What explanation can you give for why the sodium-potassium pump does not run out of ions to move in or out of the cell?
A. The cell continuously produces more ions to replace those moved by the pump, maintaining a constant supply. B. Leak channels are always open, allowing the passage of sodium ions (Na+) and potassium ions (K+) across the membrane. C. Many of the ions moved in or out then diffuse passively back through the membrane in the opposite direction.
Which ocean zone stretches from the intertidal zone to approximately 200m deep?
a. oceanic zone b. abyssal zone c. neritic zone d. aphotic zone
In food webs, chain lengths
A. range between five and ten links. B. have at least five links. C. are usually two links. D. are long and complex. E. tend to be short.