A disease that is associated with changes in chloride and water movement into and out of exocrine
glands, dry and thickened mucus in the airways, and an increase in the incidence of respiratory
infections is
a. pneumonia.
b. influenza.
c. cystic fibrosis.
d. bird flu.
e. lung cancer.
C
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The general name for enzymes that catalyze RNA synthesis directed by a DNA template is:
A. RNA synthetase. B. RNA polymerase. C. polynucleotide phosphorylase. D. RNase. E. DNA polymerase.
The first amino acid in most proteins is
a. alanine. b. isoleucine. c. leucine. d. methinonine. e. phenylalanine.
Diffusion is the movement of atoms or molecules from regions of high concentration to regions of low concentration
a. True b. False
The human body typically begins to be colonized by its normal flora
A. before birth, in utero. B. when an infant gets its first infectious disease. C. during puberty. D. during, and immediately after birth. E. when a child first goes to school.