BIO-111 Exam Review #2 - Fall 2023

Which plasma membrane component can be either found on its surface or embedded in the membrane structure?

• a. cholesterol

• b. phospholipid

• c. protein

• d. carbohydrate

Water moves via osmosis

• a. throughout the cytoplasm

• b. from an area with a high concentration of other solutes to a lower one

• c. from an area with a low concentration of water to higher concentration

• d. from an area with a high concentration of water to one of lower concentration

The principal force driving movement in diffusion is the

• a. particle size

• b. membrane surface area

• c. temperature

• d. concentration gradient

Active transport must function continuously because

• a. not all membranes are amphiphilic

• b. facilitated transport opposes active transport

• c. plasma membranes wear out

• d. diffusion is constantly moving solutes in opposite directions

What happens to the membrane of a vesicle after exocytosis?

• a. It fuses with and becomes part of the plasma membrane.

• b. It is disassembled by the cell.

• c. It leaves the cell.

• d. It is used again in another exocytosis event.

Which transport mechanism can bring whole cells into a cell?

• a. phagocytosis

• b. facilitated transport

• c. pinocytosis

• d. primary active transport

Energy is stored long-term in the bonds of

• a. glucose : ATP

• b. a catabolic molecule : anabolic molecule

• c. an anabolic molecule : catabolic molecule

• d. ATP: glucose

Tags

NGSS.HS-LS1-7

The energy currency used by cells is

• a. ATP

• b. adenosine

• c. ADP

• d. AMP

Tags

NGSS.HS-LS1-7

How are ADP and ATP related?

• a. ADP has one more phosphate group and more stored energy than ATP

• b. ATP has one more phosphate group and more stored energy than ADP

• c. They are identical except ADP has more energy

• d. ADP contains a sugar ribose and ATP does not

What happens to the membrane of a vesicle after exocytosis?

• a. It fuses with and becomes part of the plasma membrane.

• b. It is disassembled by the cell.

• c. It leaves the cell.

• d. It is used again in another exocytosis event.