Why do transmembrane proteins have domains?
a. because they have to interact with both foreign DNA and the hydrophobic core
b. because they have to recognize cancer cells
c. because the cell needs them in order to reproduce
d. because they have to interact with both the aqueous environment and the hydrophobic core
Ans: d. because they have to interact with both the aqueous environment and the hydrophobic core
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If a drug interferes with the function of ribosomes, which of the following is likely to occur?
A. DNA will not be able to make copies of itself. B. Proteins will not be produced. C. Mutations will occur to the DNA. D. Messenger RNA will not be manufactured.
Fungi differ from animals in that fungi
A. have nuclear mitosis. B. have cell walls made up of chitin. C. have nonmotile sperm. D. All of the choices are correct.
Vertebrates that practice internal fertilization employ three strategies for embryonic and fetal development. In one strategy, the female retains the young which develop and obtain nourishment from the female's blood. What is this called?
A. ovoviviparity B. oviparity C. protogyny D. protandry E. viviparity
Which of the following blood vessels are small, thin, and porous enough to exchange substances at the tissue level of organization?
A. small arteries B. veins C. arterioles D. venules E. capillaries