The maximum life expectancy for a patient with cystic fibrosis is approximately
a. 15 years.
b. 20 years.
c. 25 years.
d. 30 years.
e. 50 years.
D
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Phospholipase C hydrolyzes a membrane phospholipid to produce
A. IP3 only. B. protein kinase C only. C. diacylglycerol only. D. both IP3 and protein kinase C. E. both IP3 and diacylglycerol.
The two countries that make up the majority of the world's population are
a. the United States and China. b. China and Japan. c. the United States and India. d. India and Pakistan. e. China and India.
How does a prokaryotic cell differ from a eukaryotic cell?
a. A prokaryotic cell has no membrane-enclosed organelles. b. A prokaryotic cell has a plasma membrane. c. A prokaryotic cell contains organelles. d. A prokaryotic cell has a nucleus. e. A prokaryotic cell has DNA
Which of the following types of mutations are thought to be the LEAST common?
a. somatic mutations b. germ-line mutations c. neutral mutations d. harmful mutations e. beneficial mutations