An example of artificial active immunity would be
A. chickenpox infection, followed by lifelong immunity.
B. chickenpox vaccine triggering extended immunity to chickenpox.
C. giving a person immune serum globulins to chickenpox virus after exposure to the disease.
D. a fetus acquiring maternal IgG to the chickenpox virus across the placenta.
Answer: B
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A particular gene is 13,066 nucleotides long. This is
A) about 1.3 microbases. B) about 13 kilobases. C) about 1.3 megabases. D) about 3,011 amino acids.
What would happen if a peptide hormone receptor was expressed in the nucleus like a steroid hormone receptor? What will be an ideal response?
The moon lacks life and varies dramatically in temperature. If we could keep a layer of water spread on the surface of the moon, what effect would it have?
A) Physical conditions would remain the same. B) Because water has a high heat of vaporization, the temperatures would rise to the upper extremes. C) The temperatures would drop to the lower extremes. D) Water would absorb and hold heat and moderate the temperature extremes. E) Life would be possible, but it would have to withstand these extremes in temperature.
The ________ provides the egg a pathway between the ovary and the uterus
Fill in the blank(s) with correct word