Compared to life in the water, what was one benefit to a transition to living on land 450 mya?
A. easier to withstand gravity
B. easier to find pollinators
C. less CO2
D. easier access to water
E. more abundant sunlight
Ans: E. more abundant sunlight
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Which is true of simple diffusion of water?
A. Water usually enters a cell and produces a tremendous osmotic pressure. B. Water usually leaves the cell and produces negative osmotic pressure. C. Water tends to enter and leave the cell equally, resulting in no pressure in the cell. D. The diffusion ultimately relies on the selectively permeable nature of the cell membrane. E. Water usually enters a cell and produces a tremendous osmotic pressure AND the diffusion ultimately relies on the selectively permeable nature of the cell membrane.
How many molecules of carbon dioxide (CO2) would be produced by five turns of the citric acid cycle?
A) 2 B) 5 C) 10 D) 12 E) 60
Which of the following is/are used during the fight-or-flight response?
A. Somatic neurons B. Parasympathetic nervous system C. Norepinephrine D. Sympathetic neurons and norepinephrine E. Parasympathetic neurons and norepinephrine
Of the taxonomic groups listed below, which is the broadest (contains the most species)?
A. Phylum B. Family C. Class D. Kingdom E. Order