The region where filtration occurs is indicated by the letter(s) ____
a. A
b. B
c. C
d. D
e. A and D
ANSWER: a
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Patterns of species change and succession are one focus of
A. behavioral ecology. B. environmental science. C. biological control. D. community ecology. E. physiological ecology.
The process of sporangium formation and endospore maturation requires 6-8 hours. What is most likely to result if the temperature of the environment was raised to 100°C about 2 hours after the process started?
A. The endospore would not form properly because it is not yet heat resistant. B. The chromosome in the endospore would likely carry mutations. C. The organism would be termed a hyperthermophile. D. The endospore would form more slowly and be heat resistant. E. The endospore would form properly but would be unable to germinate.
The first single-gene disorder for which the mechanism of mutation was understood at a molecular level was
A) cystic fibrosis. B) hemophilia. C) sickle cell disease. D) diabetes mellitus.
The symptoms and signs of Friedreich’s ataxia include
all of the following EXCEPT a. loss of coordination. b. iron buildup in mitochondria. c. serious heart problems. d. abnormally shaped mitochondria. e. weak muscles.