Which part of the neuron is responsible for propagating action potentials?
A. axon
B. dendrite
C. soma
D. myelin sheath
E. nucleus
A. axon
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In the process of aerobic metabolism, carbon containing molecules are broken down and the energy
from the electrons is used for what purpose?
a. to directly supply the energy needs of an organism b. to generate a proton gradient c. to alter enzyme structure d. to heat the organism in a cold environment e. to heat stored fat
In vascular plants, what is the responsibility of phloem?
a. transporting sugars and proteins b. protecting the leaves and stems c. transporting water and minerals d. storing water and nutrients
Eosinophils respond to (complement/lipopolysaccharide/histamines) and kill bacteria in a nonphagocytic process
What will be an ideal response?
Although the reactions of the Calvin cycle do not depend directly on light, they do not usually occur at night. Why?
A) It is usually too cold at night for these reactions to take place. B) Carbon dioxide concentrations decrease at night. C) The Calvin cycle depends on products of the light reactions that cannot occur at night. D) Plants must open their stomata to restore their water balance each night. E) At night, plants have a negative water balance with the soil, due to reduced evaporation