Ultraviolet irradiation is frequently used to sterilise medical supplies such as plastic tubing
a. true
b. false
Answer: b. false
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Reduction involves the
A) loss of neutrons. B) gain of electrons. C) increase in oxidation state. D) both choices B and C E) all of the above
Short index fingers (shorter than the ring finger) are dominant in males and recessive in females,
whereas long index fingers (as long as or longer than ring fingers) are dominant in females and recessive in males. Give the F2 genotype and phenotype resulting from the cross of a male with long index fingers with a female with short index fingers. What will be an ideal response?
In female gamete development in humans and other vertebrates, the net result of meiosis is the production of one large egg and three small cells with very little cytoplasm. These three small cells:
a. degrade almost immediately. b. fertilize the egg. c. divide to form secondary egg cells. d. fuse together to form the placenta. e. act to nurse the egg cell.
How is the secondary response different from the primary response in terms of antibody concentration in the blood?
a. The secondary response is faster and produces more antibodies than the primary response. b. The secondary response is faster, but does not produce more antibodies than the primary response. c. There is no difference with regard to antibody concentration in the blood. d. The secondary response is slower, but produces more antibodies than the primary response.