In order to increase the overall rate of a metabolic pathway consisting of five reactions catalyzed by five different enzymes, which must occur?
A. Increasing the reaction rate of the first enzyme in the pathway
B. Increasing the reaction rate of all five enzymes
C. Increasing the reaction rate of the fastest enzyme
D. Increasing the reaction rate of the slowest enzyme
E. Increasing the reaction rate of the last enzyme in the pathway
Answer: D
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According to Fick's law of diffusion, which of the following changes would decrease the rate of net diffusion of "X" across a membrane?
a. An increase in the X's concentration gradient b. An increase in the permeability of the membrane to X c. An increase in the surface area of the membrane d. An increase in the thickness of the membrane e. A decrease in the size of X
Smooth muscle is grouped into two categories, _____ and _______
Fill in the blank(s) with correct word
What muscle forms the posterior aspect of the upper arm and what action does it perform at the elbow joint?
What will be an ideal response?
Tom has hepatitis, an inflammation of the liver. Which of the following symptoms would you expect to observe in Tom?
A) jaundice B) elevated levels of blood glucose C) impaired digestion of protein D) blood in the feces E) overproduction of blood plasma albumin