Animals grow mainly by increasing the number of body cells, while plants grow mainly by increasing cell size
a. True
b. False
ANSWER: False
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What will be an ideal response?
A patient is brought to the hospital after experiencing acute fatigue. The patient’s condition deteriorates rapidly during testing, despite alarmingly high blood glucose levels, and he has no history of diabetes. Initial tests also show low levels of glucose-6-phosphate. The results of further diagnostic testing are not available yet, but based on what you know, which hypothesis could explain the patient’s condition?
a. The patient has a severe phosphate deficiency, preventing phosphorylation of ADP molecules. b. The patient has inherited a mutated form of gene that regulates phosphofructokinase production. c. The patient has been exposed to a substance that binds to hexokinase and inhibits its function. d. The patient has depleted acetyl CoA, which has caused his citric acid cycle to come to a complete stop.
Which of the following occurs in the feedback
inhibition?
a. Coenzymes block enzyme activity. b. Products of metabolic reactions block enzyme activity. c. NADH is altered in electron transport chains. d. ADP is phosphorylated. e. More than one of these occurs in feedback inhibition
Which enzyme links nucleotides into a new stand of DNA?
a. DNA ligase b. DNA mutase c. DNA polymerase d. DNA primer e. DNA replicase