What is an exchange reaction?
A) a two-part metabolic reaction that involves a loss and gain of electrons
B) the first stage of cancer development, in which a cell's DNA mutates
C) a reaction that converts a provitamin into the metabolically active form
D) a reaction that produces specialized cells from stem cells
A
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People with lactose maldigestion are deficient in the enzyme ________
A. maltose B. maltase C. lactase D. lactose
Cell membranes are semipermeable, which means that _____ can passively move across the membrane
a. sodium ions b. water c. potassium ions d. phosphorous ions
Estimate a healthy weight for a man who is 6 feet tall using the Hamwi method
a. 164 pounds b. 178 pounds c. 185 pounds d. 192 pounds e. 200 pounds
If food is in the stomach, when alcohol arrives there, the food blocks the alcohol from the stomach wall and this blocking action ________ the amount of alcohol that diffuses through the gastric lining
A) reduces B) concentrates C) increases D) increases the pH of