Patients with McArdle's Disease lack an enzyme in their livers that catabolizes glycogen. These individuals tire easily during exercise. Which of the following would best explain this symptom?
A. Glycogen is produced from glucose in the blood and then stored in the liver.
B. Glycogen synthesis increases the energy available to cells during exercise.
C. Glycogen is released from the liver into the blood by the enzyme.
D. Glycogen must be broken down to glucose to be used in metabolism.
D. Glycogen must be broken down to glucose to be used in metabolism.
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Suppose researchers marked 800 turtles and later were able to trap a total of 300 individuals in that population, of which 150 were marked. What is the estimate for total population size?
A) 200 B) 1050 C) 1600 D) 2100
Enzymes that are only produced when substrate is present are termed ________.
A. induced enzymes B. constitutive enzymes C. exoenzymes D. conjugated enzymes E. endoenzymes
During translation, where does the energy for translocation come from?
a. from the breaking of bonds between tRNA and mRNA b. from hydrolysis of GTP c. from the breaking of bonds between mRNA and the ribosome d. from the removal of a tRNA from the E site
Carlos visited the desert for the first time and, as he was sweating a lot, bought some distilled water. This seemed to satisfy his thirst very well. Why is the distilled water not the best choice of beverage for Carlos?
What will be an ideal response?