How are the posterior pituitary and anterior pituitary similar?
A. Both are connected to the hypothalamus via a portal system.
B. Both produce releasing and inhibiting hormones.
C. Both are controlled by the hypothalamus.
D. Both produce three or more hormones.
E. Both produce hormones that control other glands.
Answer: C
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Predict what would happen to a neuron's resting membrane potential if the number of sodium leak channels increased
A. The membrane potential would remain the same due to the activity of the sodiumpotassium pump. B. The membrane potential would become more negative. C. The membrane potential would become more positive. D. The membrane potential would become slightly more negative.
Streptomycin has its effect by causing _____________
A. DNA polymerase to malfunction D. errors in nuclotide assembly B. errors in amino acid assembly E. a combination of more than one of these C. breakage of hydrogen bonds in the DNA molecule
What happens to a sarcomere when muscle contraction occurs?
A) It shortens. B) It lengthens. C) It remains the same. D) It lengthens and then shortens.
Which of the following describes the direction in which nucleotides are added onto a growing DNA strand during DNA replication in cells?
a. in the 3' ? 5' direction for the leading strand, and the 5' ? 3' direction on the lagging strand b. in the 5' ? 3' direction only c. in the 5' ? 3' direction for the leading strand, and the 3' ? 5' direction on the lagging strand d. in either the 5' ? 3' direction or the 3' ? 5' direction on both strands, depending on where replication begins