Which feature is not associated with aging of the musculoskeletal system?
A. a decrease in the muscle mass starting in the 20s or 30s for men
B. compression of the vertebrae
C. a reduction in the size and number of muscle fibers
D. a two-inch decrease in height by the time we reach age 80
E. All of these are features associated with aging.
Answer: E
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Why was the determination of the actual sequence of the human genome considered to be descriptive science?
A. It did not involve deductive reasoning. B. It did not involve hypothesis-driven research. C. It involved hypothesis-driven research. D. It involved deductive reasoning.
Prokaryotic DNA replication occurs at a rate of
A. 750-1,000 base pairs per second. B. 50-100 base pairs per minute. C. 750-1,000 base pairs per minute. D. 50-100 base pairs per second.
Which cells will produce and secrete large numbers of antibodies in an attempt to rid the body of the pathogen?
a. Dendritic cell b. Effector B cells c. Cytokines d. Effector helper T cell e. Naïve B cell
The three-dimensional shape of a protein is determined by the ____ and the results of chemical modifications and
other processing events. a. interaction of R groups b. interaction with other polypeptide chains c. amino acid sequence d. bonds formed with other proteins e. initiation complex