Which of the following can vary among monosaccharides?
A) the number of carbon atoms
B) the presence of a carbonyl group
C) the presence of hydroxyl groups
D) the presence of sulfur groups
Answer: A
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Suppose a new mutation that improves metabolic efficiency is lost from a small population of mammals living in a region of seasonal food scarcity after a hurricane eliminates half the mammal population. This is an example of
A) directional selection. B) stabilizing selection. C) disruptive selection. D) sexual selection. E) genetic drift.
Four of the five answers listed below are related by a similar area of the ocean. Select the exception
a. sea mounts b. pelagic province c. benthic province d. continental shelves e. hydrothermic vents
Within a single motor neuron, the direction an
impulse follows is a. dendrite >>> axon >>> cell body. b. axon >>> dendrite >>> cell body. c. dendrite >>> cell body >>> axon. d. cell body >>> dendrite >>> axon. e. cell body >>> axon >>> dendrite
A modification that helps equip organisms for their way of life is a(n)