The macromolecules that serve in the storage and transmission of genetic information are:
A) carbohydrates.
B) lipids.
C) membranes.
D) nucleic acids.
E) proteins
Ans: D) nucleic acids.
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With respect to orthomyxoviruses, changes in antigenicity usually occur as a result of
A. frameshift mutations. B. antigenic shift. C. antigenic drift. D. both antigenic drift and antigenic shift. E. both antigenic drift and frameshift mutations. F. both antigenic shift and frameshift mutations.
A zygote is formed ____
a. after a fertilized egg undergoes mitotic divisions to mature b. by the fusion of male and female somatic cells c. by the fusion of egg and sperm nuclei d. directly by meiosis in fungi e. by the mitotic divisions of spores in plants
In diabetes mellitus, the problems associated
with this disorder arise because
a. fat breakdown produces harmful waste products. b. protein breakdown produces harmful waste products. c. excess glucose results in harmful substances. d. all of these (a through c) occur. e. fat breakdown and protein breakdown produce harmful waste products
A person with a diet very low in iron may not be able to make enough of a formed element in the blood called ________
Fill in the blank(s) with correct word