Concerning fermentation, pyruvate is to lactic acid in muscle cells as __________ is to __________ in yeast.
a. lactic acid; water
b. pyruvate; oxygen
c. sugars; proteins
d. ATP; NADH
e. acetaldehyde; ethanol
Answer: e. acetaldehyde; ethanol
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Which of the following is the genetic condition observed in the woman on the left in the above figure?
a. Huntington’s disease b. achondroplasia c. triple recessive condition d. galactosemia e. muscular dystrophies
A collection of sensory neurons and interneurons that are concentrated together is called
a) cephalization b) a cerebrum c) a nerve net d) a ganglion
The function of adenylyl cyclase is to
A. catalyze the conversion of ATP to cAMP. B. stimulate the release of calcium from the endoplasmic reticulum. C. directly activate protein kinase A (PKA). D. cleave PIP2 into DAG and IP3.
In allosteric enzyme regulation, which of the following is false about the molecules that can inhibit enzyme activity?
A) They can increase substrate binding. B) They can cause the active site to have a poor shape for binding substrate. C) They can bind to a site other than the active site. D) They cause a change in the enzyme's shape.