The activity of which of the following digestive enzymes will be affected by the regular consumption of antacids following a meal?
A) Amylase B) Sucrase C) Pepsin D) Lipase E) Cellulase
C
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In eukaryotic organisms, a single-stranded break in the DNA is required before recombination can begin during meiosis
Indicate whether the statement is true or false
What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?
A. The alveoli would physically collapse. B. The alveoli would be much more likely to harbor infections. C. The alveoli would fill with fluid due to an ion transport defect. D. Oxygen exchange with the blood would be impaired due to a thickening of the epithelium. E. Carbon dioxide exchange with the blood would be impaired due to an inhibition of carbonic anhydrase.
Two true-breeding mutant strains of Drosophila have black body color instead of the wild-type gray yellow. When the two strains are crossed, all the F1 flies have wild-type body color. How can these data be interpreted?
A) Recombination occurred. B) Complementation occurred. C) The mutations involved are on two different genes. D) A new mutation occurred in all the offspring. E) Both B and C
In capsular staining which of the following steps could result in a halo around the cells that could be mistaken for a capsule?
A) Using India ink to obliterate the background B) Heat fixation of the slide C) Using crystal violet to stain the bacterial cell