Enzymes Contain Molecules In The Active Site That Help Chemical Transformations. How Does This Drug Work?

Chapters 6,7 &31
Question 1
1 out of 1 points

Some enzymes contain molecules in the active site that help facilitate chemical transformations. These molecules are called:

Selected Answer: coenzymes.
Correct Answer: coenzymes.

Question 2
1 out of 1 points

People with high cholesterol levels often take drugs in an attempt to lower their cholesterol levels. One such drug is Lipitor. How does this drug work?

Selected Answer: It acts as a competitive inhibitor by binding to the active site of enzymes that normally produce cholesterol.
Correct Answer: It acts as a competitive inhibitor by binding to the active site of enzymes that normally produce cholesterol.

Question 3
1 out
Correct Answer: active transport to move glucose up its concentration gradient.

Question 4
1 out of 1 points

The 1985 Nobel Prize in Physiology or Medicine was awarded to Michael Brown and Joseph Goldstein for their work on cholesterol metabolism. Brown and Goldstein investigated the cause of remarkably high levels of circulating cholesterol found in certain families. Just as remarkable was the high incidence of heart disease in these families. What Brown and Goldstein found was not what might be expected–these individuals did not make too much cholesterol. Instead, most of these people had defects in receptor-mediated endocytosis (RME). What could possibly link high cholesterol levels in the blood and defective RME in these patients?

Selected Answer: Cholesterol was not transported into cells by RME and therefore accumulated in the blood.
Correct Answer: Cholesterol was not transported into cells by RME and therefore accumulated in the blood.

Question 5
1 out of 1 points

Which of the following would be least likely to diffuse through a phospholipid bilayer?

Selected Answer: sodium ions
Correct