Which of the following is always the same in every unit of the DNA molecule?
a. the sugar
b. the base
c. the phosphate group
d. Only a) and c) are always the same.
e. Only a) and b) are always the same.
Ans: d. Only a) and c) are always the same.
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Which of the following is not a function of the fruit?
A. protecting seeds B. aiding in the dispersal of seeds C. attracting pollinators
Chemoreceptors located in the aortic and carotid bodies stimulate the respiratory control center in the brain when the blood __________ decreases.
A. PCO2 B. hemoglobin concentration C. pH D. PO2 E. HCO3- concentration
In areas of the continental shelf where bottom currents are weak, the environment is considered to be
a. harsh. b. always changing. c. generally stable. d. cyclically fluctuating. e. low in species diversity.
A traditional business model is one:
A) which is very rare. B) which is the basis of only a few companies. C) in which the central strategy for creating value is based on meeting market demands. D) in which the central strategy for creating value is based on mitigating social problems.