If a physiologic condition resulted in blood pH reaching 7.2, but then physiological buffering systems brought the pH to 7.4, that increase in pH would be called
A. acidosis.
B. alkalosis.
C. compensation.
D. imbalance.
E. partial noncompensation.
C
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When an enzyme catalyzing a catabolic reaction changes conformation to an induced fit with the substrate,
A. it strengthens the chemical bonds in the enzyme so that it remains perpetually active. B. it stresses chemical bonds in the substrate, making it easier to break them. C. it strengthens chemical bonds in the substrate so that cofactors can act on it. D. it stresses chemical bonds in the enzyme so that the enzyme breaks into two catalytic subunits.
Sperm cannot fertilize an egg until they _________.
A) undergo capacitation. B) undergo decapitation. C) are in the vagina for 3 days. D) lose their acrosome. E) undergo activation.
The superficial layer of keratinized stratified squamous epithelial tissue is made up of dead cells with no nuclei.
Answer the following statement true (T) or false (F)
In adults, red blood cells are made in one place, spend most of their lifespan in another, and most are finally destroyed in yet another place. Which choice lists these locations in the correct chronological order?
A. bone marrow; blood vessels; spleen B. bone marrow; spleen; blood vessels C. spleen; blood vessels; spleen D. blood vessels; spleen; bone marrow E. spleen; blood vessels; bone marrow