BIO102 - ZB Quiz 5

Which of these words does not belong with the rest as it relates to concentration gradient?

active transport

Probable factors that affect the passage of materials across cell membranes include all of the following EXCEPT

color

What process typically regulates the enzymes involved in metabolic reactions?

feedback inhibition

Considering the ATP cycle, which of the following would have the most potential energy to perform work for cell activities?

ATP

In the set-up shown in the figure below, which of the following statements would describe what would be observed after 12 hours of time elapsed

The level of the solution in the tube would rise because there are now more dissolved solutes in the tube than the beaker.

What is the biological risk of using salt on icy roads in parts of the country that have a cold winter season?

The salt has the risk of leeching into the ground and creating a hypertonic environment for plant cells.

If blood cells are placed in a hypertonic solution

the cells will shrink due to water loss by the cell.

Which of the following is not a type of potential energy?

the energy of a ball rolling down a hill

Once the substrate moves into the active site of the enzyme

the enzyme alters in shape to more closely fit the substrate

Both starch and cellulose are made by stringing together many glucose molecules, but starch is easily digested by humans while cellulose is indigestible. The starch polysaccharide has every bond occurring below the sugar rings while the bonds in cellulose alternate between one bond above the ring and the next below the ring. How can you explain the human's inability to digest cellulose?

The enzyme that breaks down starch can only fit the specific bond configuration of bonds below the ring.