Age-related changes in systems other than the nervous system include
a. a decrease in the size of the heart.
b. a break down of alveolar walls in the lungs.
c. the buildup of cholesterol plaques in blood vessels.
d. a decrease in blood transport to organs.
e. all of these.
E
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Cotransduction establishes the general order of genes on a bacterial chromosome, while conjugation is more specific and thus may be used to establish precise distances
Indicate whether the statement is true or false
Optimal recovery and identification of anaerobic bacteria in clinical specimens occurs when:
a. the initial incubation period is at 35°C to 37°C for 48 hours. b. plates are incubated for at least 3 days before discarding as negative. c. the initial incubation period is at 35°C to 37°C for 24 hours. d. thioglycollate broth can be inspected daily for 3 days.
Osmosis is an example of ____
a. facilitated diffusion b. passive transport c. active transport d. exocytosis e. endocytosis
Which of the following is NOT a trait that is the result of, or is affected by, the interaction of more than one gene?
A. human skin color B. sickle-cell anemia C. cleft palate D. height