Q: Which of the following equations correctly represents the change in the number of cells after one round of mitosis?

$$N_{final} = 2 \times N_{initial}$$

Question 1

Which of the following statements best describes the principle of selective permeability in plasma membranes?

Accepted Answer

The membrane allows certain molecules to pass while restricting others based on size, charge, or solubility.

Question 2

Which organelle is responsible for energy production in eukaryotic cells, and what is the main process it carries out?

Accepted Answer

Mitochondrion; cellular respiration

Question 3

A scientist observes a cell with no nucleus, circular DNA, and ribosomes. Which type of cell is being observed?

Accepted Answer

Prokaryotic cell

Question 4

Which process requires energy input from the cell to move molecules against their concentration gradient?

Accepted Answer

Active transport

Question 5

During which phase of mitosis do sister chromatids separate and move toward opposite poles of the cell?

Accepted Answer

Anaphase

Question 6

Which equation best represents the net movement of water across a selectively permeable membrane due to osmosis?

Accepted Answer

$$\Delta \Psi = \Psi_{inside} - \Psi_{outside}$$

Question 7

Which of the following best distinguishes between exocytosis and endocytosis?

Accepted Answer

Exocytosis releases substances out of the cell, while endocytosis brings substances into the cell.

Question 8

Which of the following is a major difference between plant and animal cells?

Accepted Answer

Plant cells contain chloroplasts, while animal cells do not.

Question 9

A patient is diagnosed with a genetic disorder affecting the proteins that facilitate glucose transport across cell membranes. Which type of transport is most likely impaired?

Accepted Answer

Facilitated diffusion

Question 10

Which of the following best describes the role of proteins in the movement of molecules across a membrane?

Accepted Answer

Proteins act as channels or carriers to facilitate the movement of specific molecules.

Question 11

Which of the following events occurs during cytokinesis in animal cells?

Accepted Answer

Pinching of the cell membrane to form two daughter cells

Question 12

Which of the following is NOT a component of the cell theory?

Accepted Answer

Cells can spontaneously generate from non-living matter.

Question 13

Which process is responsible for the uptake of large particles, such as bacteria, by a cell?

Accepted Answer

Phagocytosis

Question 14

Which of the following best describes the difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a nucleus, prokaryotic cells do not.

Question 15

Which of the following equations correctly represents the change in the number of cells after one round of mitosis?

Accepted Answer

$$N_{final} = 2 	imes N_{initial}$$

Question 16

Which of the following is a key event that occurs during metaphase of mitosis?

Accepted Answer

Chromosomes align at the center of the cell.

Question 17

Which type of membrane transport is illustrated by the movement of oxygen from the lungs into the blood?

Accepted Answer

Simple diffusion

Question 18

During meiosis, which event increases genetic variation among offspring?

Accepted Answer

Crossing over between homologous chromosomes

Question 19

Which of the following best describes the difference between diffusion and osmosis?

Accepted Answer

Diffusion is the movement of solutes, while osmosis is the movement of water across a selectively permeable membrane.

Question 20

A cell is placed in a solution with a higher concentration of solutes than inside the cell. What will happen to the cell?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Cellular Organization, Membrane Permeability, and the Cell Cycle: Study Notes

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