Two enzymes of unknown concentrations, A and B, act on the same substrate, S. The initial velocity (V0) of the reaction catalyzed by Enzyme B is 60% of the V0 for Enzyme A when both enzymes are assayed at [S]= 100 mM. Enzyme A has a Km of 20 mM, and enzyme B has a Km of 100 mM. Both Enzyme A and B have a Vmax of 120 mM/s. (6 pts)   A) What is the initial velocity (V0) for Enzyme A with its kinetic parameters and [S] provided? (3 pts)   B) From these results, can you draw the conclusion on whether Enzyme A’s kcat is higher/lower than or equal to that of Enzyme B? Explain. (3 pts)

What type of membrane transport is focused on the movement of water across a membrane?

Picture “a” shows a gram _____________cell wall arrangement, whereas “b” shows a gram ______________cell wall arrangement.

Which of the following is LEAST likely to cross a plasma membrane by diffusion?

If the following bacteria does NOT contain an axial filament (Endoflagella) it could best be described as which of the following?

Match the microscope structure to the description. 

If you are using the scanning (4x) objective of a microscope to look at a specimen, what is the total magnification being used?

This type of microscope uses visible light to produce an image of a light cell against a dark background.

Which of the following would NOT be considered part of your microbiome?

Vocal fold edema and erythema are reactions of tissues to vocal abuse or inflammatory agents such as reflux.