Pyruvate is the end product of
a. glycolysis.
b. acetyl-CoA formation.
c. fermentation.
d. the Krebs cycle.
e. electron transport.
A
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An individual whose resident normal microbiota overgrows the other indigenous organisms resulting in disease may be a result of:
a. the patient has received antibiotic treat-ment killing off some of the protective resident microbiota. b. become immunocompromised or unable to fight off infection in normal conditions. c. maybe suffering from a debilitating dis-ease resulting in a decreased balance be-tween normal microbiota and pathogenic organisms. d. all of the scenarios are potentially asso-ciated with the development of disease.
Dispersal agents, such as pollen-carrying wind or seed-carrying animals, are responsible for ____ in most plant
populations because they often introduce novel alleles into a population.
a. gene flow b. genetic drift c. mutations d. nonrandom mating e. natural selection
Chlorophyll a molecules absorb ____ light
a. orange, green and yellow b. orange, purple and red c. red and yellow d. orange and blue e. purple, orange, and yellow
This graph shows both human birth weight and
newborn infant mortality. The most common birth weight is between seven and eight pounds. Human birth weight seems to be an example of a. directional selection. b. stabilizing selection. c. sexual selection. d. disruptive selection. e. artificial selection.