Most of the carbon dioxide in the blood of humans is transported
A. as dissolved CO2 in plasma.
B. as bicarbonate ion in plasma.
C. attached to hemoglobin in red blood cells.
D. attached to hemoglobin in plasma.
E. as carbonic acid.
B. as bicarbonate ion in plasma.
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The elongation of stems is stimulated by
A. auxin only. B. gibberellin only. C. ethylene only. D. auxin and gibberellin. E. auxin and ethylene.
Which is an example of active immunity?
A. antibodies produced from a vaccine, or a person receiving an injection of antibodies B. a fetus acquiring antibodies through the placenta, or a person receiving an injection of antibodies C. a person receiving an injection of antibodies D. a fetus acquiring antibodies through the placenta E. antibodies produced from a vaccine
For a particular gene, the frequency of the dominant allele H is 0.65. The total population size is
10,000 individuals. Also, the homozygous recessive condition results in living but sterile offspring. Fill in the table of values for the generations indicated:Generation p q p2 2pq q2 1 2 Does this population exhibit Hardy-Weinberg equilibrium? Why or why not? If not, what assumptions does the Hardy-Weinberg principle make that appear to be inapplicable in this situation? What will be an ideal response?
A hydrophilic substance is one that can
A. form covalent bonds with hydrogen. B. dissolve in water. C. buffer a solution. D. mix with nonpolar solvents.