Which energy source fuels cell division in animal cells?
a. GTP
b. ATP
c. kinetic energy of Golgi body movement
d. glycerol
e. fat deposits
ANSWER: b
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How might the R-groups influence the ability of protein to dissolve in water?
a. by their electrical charge b. by whether they are hydrophilic or hydrophobic c. by their structural shape d. both a and b above
The persistence of the sickle-cell anemia allele in some African populations is the result of ____
a. a high rate of mutation of the normal allele to the sickle-cell anemia allele b. the advantage of the heterozygous form over the homozygous forms c. nonrandom mating d. a decline in the occurrence of malaria in Africa e. genetic drift
Which of the following choices INCORRECTLY pairs an endocrine gland or hormone with an aspect of metabolism that it regulates?
A) TSH–thyroid hormone B) pancreas–blood glucose levels C) prolactin–blood potassium levels D) ovary–female sexual characteristics
Which of the following statements would not be consistent with the theory for the endosymbiotic origin of mitochondria and chloroplasts?
A. Mitochondria and chloroplasts have some enzymes unique to them. B. Genes encoded within mitochondria and chloroplasts indicate a closer relationship to prokaryotes than do most nuclear genes. C. The composition of the inner membrane of chloroplasts and mitochondria is similar to the plasma membrane of prokaryotic cells. D. Mitochondria and chloroplasts have their own DNA enclosed within a nuclear envelope. E. The composition of the outer membrane of chloroplasts and mitochondria is similar to the plasma membrane of eukaryotic cells.