An X-linked carrier is a ____
a. homozygous dominant female
b. heterozygous female
c. homozygous recessive female
d. homozygous male
e. heterozygous male
ANSWER: b
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In light-dependent reactions, hydrogen ions are transported into the thylakoid membrane. What drives the
movement of these ions?
a. passive diffusion of ions from high to low concentration b. passive diffusion of ions from low to high concentration c. active transport of ions driven by the hydrolysis of water into oxygen d. active transport of ions driven by energy from the electron transport chain e. active transport through the enzyme ATP synthase
In an experiment, the control group:a
disproves the theory. b. proves the hypothesis. c. proves the prediction. d. does not contain the variable being tested. e. is similar to the test group in all aspects including the variable being tested.
An immunization against cow pox should protect an individual:a
by increasing the production of lymphocytes by the bone marrow. b. through the production of diverse antibodies. c. by initiating a secondary immune response. d. against other antigens with the same antigenic determinants. e. against other bacterial infections.
The figure above depicts the change in p over time when the forward mutation rate is twice the reverse muta-tion rate
This results in a p equilibrium frequency that approaches 0.333. If the forward mutation rate was four times as fast as the reverse mutation rate, one would expect the equilibrium value of p to be: a. stable b. unstable c. lower than 0.33 d. higher than 0.33 e. A and C