You are studying an enzyme-catalyzed reaction that induces a particular cellular activity in the lab. If you wanted to slow down that particular cellular activity by controlling the enzyme, what could you do?
A. Decrease the temperature of the incubator where the cells are growing
B. Add an allosteric activator to the cells
C. Add cofactors to the media the cells are growing in
D. Increase the pH of the media the cells are growing in to the optimum pH
Answer: A
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Transcription in eukaryotes occurs in the
A) RNA polymerase. B) endoplasmic reticulum. C) cytoplasm. D) nucleus.
Which of the following segments of the mammalian nephron receives the filtrate first?
a. distal convoluted tubule b. Bowman's capsule c. descending segment of the loop of Henle d. proximal convoluted tubule e. ascending segment of the loop of Henle
Placoid scales are found on:
a. fleshy-finned fishes. b. cartilaginous fishes. c. ray-finned fishes. d. lampreys. e. hagfishes
Heavy metals are effective antimicrobial agents but are not widely used because of their high toxicity to humans.
Answer the following statement true (T) or false (F)