In the light-dependent reactions of photosynthesis, an excited electron from photosystem II is passed along an electron
transport chain to ____.
a. NAD+
b. NADH
c. photosystem I
d. oxygen
e. water
ANSWER: c
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Nearly every ecosystem utilizes ____
a. freshwater b. energy derived from carbon dioxide c. energy produced from decomposition d. energy from the sun e. oxygen released by metabolic pathways
The fewest number of individuals necessary to ensure the long term survival of a population is known as the
A) carrying capacity. B) resource population. C) lowest common denominator. D) minimum viable population.
Which of the following might be expected in the logistic model of population growth?
A) As N approaches K, b increases. B) As N approaches K, r increases. C) As N approaches K, d increases. D) Both A and B are true. E) Both B and C are true
Nodes of Ranvier is the axonal area where lacks the insulation of myelin sheets of (i) _______________. The structure contributes to efficient propagation of axon potential due to the localization of highly concentrated (ii) _______________.
a) (i) oligodendrocyte or Schwann cell, (ii) K+ channel b) (i) astrocyte (ii) voltage gated Na+ channel c) (i) astrocyte (ii) K+ channel d) (i) oligodendrocyte or Schwann cell, (ii) voltage gated Na+ channel