Which of the following does not increase reaction rate?

Suppose that an enzyme has a critical functional group in its active site that is heavily involved in carrying out the catalytic mechanism. To perform its role in catalyzing its target reaction, this particular functional group must be able to accept a proton from the intermediate during the process. If the pKa of this functional group is equal to 7.0, then what percentage of the total enzyme active sites for this enzyme would be in the active form in a solution in which the pH is equal to 6.4?

If the chloride concentration is in the cell and in the blood, what is the electrochemical potential of chloride ions across the plasma membrane at when the electrical potential across the membrane is and the inside is negative?

There are at least four types of glucose transporter in the body. GLUT1 and GLUT3 are located in most tissues including the brain and the red blood cells. These glucose transporters rapidly take up glucose from the blood but have the lowest value. GLUT2 is commonly found in the liver and the pancreas. GLUT2 has a lower affinity for glucose but has the highest value. GLUT4 is common in skeletal tissues and in adipose tissues. This transporter is normally not active for uptake unless stimulated by insulin or during exercise.

What is the mechanism by which the GLUT proteins in the transport glucose into the cell from the blood?

If the level of ATP suddenly increases in a cell, facilitated diffusion in the cell will __________.

You make a Hill plot reflecting the binding kinetics of a receptor and see that the slope (the Hill coefficient) is 1. What does this indicate about your receptor?

Which of the following coenzymes functions primarily by transferring one-carbon groups?

Given the following kinetic parameters, which of the following enzymes would show the most efficiency?