Question 1

Which of the following structures is responsible for movement in eukaryotic cells?

Accepted Answer

Cilia and flagella

Question 2

Which statement best describes the function of microtubules, microfilaments, and intermediate filaments in the cytoskeleton?

Accepted Answer

They support the cell's shape.

Question 3

What is the main difference between the cell walls of plant cells and fungal cells?

Accepted Answer

Plant cell walls are made of cellulose, while fungal cell walls are made of chitin.

Question 4

Which of the following best describes the function of tight junctions in animal cells?

Accepted Answer

They tightly press neighboring cell membranes together to prevent leakage.

Question 5

A scientist observes that a cell is able to move water from a region of low solute concentration to a region of high solute concentration across its membrane. Which process is most likely responsible for this movement?

Accepted Answer

Active transport

Question 6

Which of the following statements about the fluid mosaic model of the plasma membrane is correct?

Accepted Answer

Lipids and some proteins can shift sideways within the membrane.

Question 7

A red blood cell is placed in a hypertonic solution. What will happen to the cell?

Accepted Answer

It will shrink as water leaves the cell.

Question 8

Which equation best represents the process of osmosis across a selectively permeable membrane?

Accepted Answer

$$ \Delta \Psi = \Psi_s + \Psi_p $$

Question 9

Which of the following is true about facilitated diffusion?

Accepted Answer

It moves molecules down their concentration gradient with the help of transport proteins.

Question 10

Which type of cell junction is anchored by sturdy keratin protein filaments and provides strong adhesion between cells?

Accepted Answer

Desmosomes

Question 11

Which of the following statements about cholesterol in the plasma membrane is correct?

Accepted Answer

Cholesterol helps stabilize membrane fluidity across temperature changes.

Question 12

Which process requires energy to move large molecules into the cell by vesicle fusion with the plasma membrane?

Accepted Answer

Endocytosis

Question 13

A plant cell is placed in a hypotonic solution. What is the most likely outcome?

Accepted Answer

The cell will gain water and become turgid.

Question 14

Which of the following best describes the role of plasmodesmata in plant cells?

Accepted Answer

They allow water and small solutes to pass directly from one cell to another.

Question 15

Which of the following is a correct statement about prokaryotic cells compared to eukaryotic cells?

Accepted Answer

Prokaryotic cells are generally smaller than eukaryotic cells.

Question 16

Which of the following best explains why polar molecules are less likely to pass through the plasma membrane than nonpolar molecules?

Accepted Answer

The hydrophobic interior of the membrane repels polar molecules.

Question 17

Which of the following is an example of bulk transport by vesicles that requires energy?

Accepted Answer

Phagocytosis

Question 18

A cell uses a cotransport protein to move glucose into the cell against its concentration gradient, coupled with the downhill transport of sodium ions. Which equation best represents the total free energy change for this process?

Accepted Answer

$$ \Delta G_{total} = \Delta G_{glucose} + \Delta G_{Na^+} $$

Question 19

Which of the following statements about membrane carbohydrates is correct?

Accepted Answer

Membrane carbohydrates are involved in cell-cell recognition.

Question 20

Which of the following best describes the movement of molecules in diffusion?

Accepted Answer

Molecules move from high concentration to low concentration.

Cell Structure, Membrane Dynamics, and Transport Mechanisms

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드