Question 1

Which of the following best describes the difference between cytoplasm and cytosol in a eukaryotic cell?

Accepted Answer

Cytoplasm refers to the fluid and organelles outside the nucleus, while cytosol is the fluid portion of the cytoplasm excluding organelles.

Question 2

A red blood cell is placed in a hypotonic solution. What is the most likely outcome for the cell?

Accepted Answer

The cell will swell and may undergo hemolysis as water enters.

Question 3

Which organelle is primarily responsible for ATP production through aerobic respiration?

Accepted Answer

Mitochondria

Question 4

Facilitated diffusion differs from simple diffusion in that:

Accepted Answer

Facilitated diffusion requires a transporter protein for solute movement.

Question 5

Which of the following transport processes requires cellular energy (ATP)?

Accepted Answer

Active transport

Question 6

During osmosis, water moves across a selectively permeable membrane from:

Accepted Answer

Low solute concentration to high solute concentration

Question 7

Which cellular structure is responsible for organizing microtubules and spindle fibers during mitosis?

Accepted Answer

Centrosome

Question 8

A patient is given an intravenous solution that is hypertonic compared to their blood plasma. What effect will this have on their red blood cells?

Accepted Answer

Red blood cells will shrink due to water leaving the cells.

Question 9

Which process involves the movement of large particles into a cell by engulfing them in a vesicle formed from the plasma membrane?

Accepted Answer

Endocytosis

Question 10

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

Protein synthesis for secretion

Question 11

Which equation best represents the rate of diffusion across a membrane?

Accepted Answer

$$D = k \frac{dC}{dx}$$

Question 12

Which organelle contains digestive enzymes and is responsible for breaking down cellular waste?

Accepted Answer

Lysosome

Question 13

Transcription is the process by which:

Accepted Answer

RNA is synthesized using DNA strands as templates.

Question 14

Which of the following is true about ribosomes?

Accepted Answer

They are the site of protein synthesis.

Question 15

A cell is actively transporting sodium ions out against their concentration gradient. Which equation best describes the energy requirement for this process?

Accepted Answer

$$\Delta G = RT \ln \left( \frac{[Na^+]_{out}}{[Na^+]_{in}} \right)$$

Question 16

Which of the following best describes the function of the Golgi apparatus?

Accepted Answer

It packages and modifies proteins for secretion.

Question 17

Which process is responsible for the release of neurotransmitters from nerve cells into the synaptic cleft?

Accepted Answer

Exocytosis

Question 18

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

Accepted Answer

It is composed mainly of a phospholipid bilayer with embedded proteins.

Question 19

Which of the following molecules can diffuse directly through the lipid bilayer of the plasma membrane?

Accepted Answer

Oxygen

Question 20

Translation is the process by which:

Accepted Answer

Proteins are synthesized from mRNA templates.

Cells: Cytology and Cell Physiology – Structure, Function, and Transport

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