Which group of organisms was the 1st tetrapods on land?
a. Reptiles
b. Birds
c. Mammals
d. Dinosaurs
e. Amphibians
e
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Bacteria may survive phagocytosis by
A. preventing fusion of the lysosome with the phagosome. B. lysing the phagosome. C. producing comet tails. D. preventing fusion of two phagosomes. E. preventing fusion of the lysosome with the phagosome AND lysing the phagosome.
All of the following are true of the second law of thermodynamics EXCEPT:
(A) the amount of useful energy decreases. (B) spontaneous changes result in a more uniform distribution of energy. (C) all chemical reactions release more energy than they consume. (D) there is a natural tendency toward greater disorder of the organization of matter. (E) NONE of the above
A certain type of congenital deafness in humans is caused by a rare autosomal recessive gene. In a mating involving a deaf man and a deaf woman, could some of the children have normal hearing?
A) Yes, because it's rare. B) No, because the parents would teach their children sign language. C) Yes, because traits assort independently. D) No, since the gene in question is recessive, both of the parents are homozygous and one would not expect normal hearing in the offspring. E) No, traits get passed down from father to child and the father is deaf.
In preparation for mitosis, DNA is copied; this is called DNA __________.
Fill in the blank(s) with the appropriate word(s).