Just before entering the small intestine, what is the pH of chyme?
A) very basic (very high pH)
B) slightly basic (high pH)
C) neutral (pH near 7)
D) acidic (low pH)
D
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When differences in the phenotype due to the environment can be ignored:
A. the environmental component of a complex trait can be more easily identified. B. the genetic variation underlying phenotypic differences can be more easily identified. C. the trait is not considered a complex trait. D. epistatic interactions determine phenotypes. E. All of these choices are correct.
Sucrose is composed of
a. two molecules of fructose. b. two molecules of glucose. c. a molecule of fructose and a molecule of glucose. d. a molecule of fructose and a molecule of galactose. e. a monosaccharide and a disaccharide
Those microbes are part of the normal flora, but capable of causing disease especially in immuno-imcompetent people are called:
A. Opportunistic pathogens B. Asymptomatic pathogens C. Virulent pathogens D. Pathogens
How do antacid tablets work to relieve indigestion and/or a sour stomach?
a. They decrease the pH of the stomach to lessen the acidity. b. "They increase the pH of the stomach to lessen the acidity." c. They increase the acidity to help break down food matter in the stomach. d. "They maintain the current pH of the stomach."