In the process of differentiation,
a. daughter cells usually receive different
assortments of genes.
b. cells with the same genes have different genes
expressed.
c. cells become specialized as a result of cleavage.
d. daughter cells acquire different characteristics as
a result of gene mutations.
e. all of these occur.
Answer: b
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A. antimicrobial agents B. semisynthetic drugs C. antibiotics D. synthetic drugs
How is a carrier protein different from a channel protein?
A. Carriers use ATP. B. Carriers undergo a conformation change. C. Transport through a carrier depends on concentration gradients. D. Transport through a carrier does not depend on the random motion of molecules.
A relationship in which one organism is found on the surface of another is referred to as a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Protozoa are primarily
A) free-living. B) pathogenic. C) parasitic. D) photosynthetic.