Q: Which equation best represents the division of fluid compartments by the cell membrane?

$$\text{Cell Membrane} : ICF \mid ECF$$

Question 1

Which of the following best describes the function of the cell membrane (plasma membrane)?

Accepted Answer

It acts as a boundary between the inside and outside of a cell, controlling the movement of substances.

Question 2

A scientist is studying a membrane protein that is attached only to the surface of the cell membrane and not embedded within it. Which type of protein is this?

Accepted Answer

Peripheral protein

Question 3

Which of the following statements about the phospholipid bilayer is correct?

Accepted Answer

The phosphate head is hydrophilic and the fatty acid tails are hydrophobic.

Question 4

Cholesterol is scattered throughout the cell membrane. What is its primary function?

Accepted Answer

It adds stability to the cell membrane.

Question 5

Which organelle is responsible for ATP synthesis and contains its own DNA?

Accepted Answer

Mitochondria

Question 6

A cell is observed to have a large number of ribosomes attached to its endoplasmic reticulum. What is the most likely function of this cell?

Accepted Answer

Synthesis of secretory, lysosomal, and membrane proteins

Question 7

Which of the following best describes the Fluid Mosaic Model of the cell membrane?

Accepted Answer

The membrane is composed of a fluid bilayer with proteins and other molecules that can move laterally.

Question 8

Which cytoskeletal component is formed from tubulin and is responsible for moving organelles and forming structures like cilia and flagella?

Accepted Answer

Microtubules

Question 9

A patient has a genetic disorder affecting the function of lysosomes. Which cellular process is most likely impaired?

Accepted Answer

Digestion of bacteria, viruses, and worn-out organelles

Question 10

Which of the following is NOT a function of membrane proteins?

Accepted Answer

Synthesizing DNA

Question 11

If a cell's cytoskeleton is disrupted, which of the following processes would be most directly affected?

Accepted Answer

Cell movement and division

Question 12

Which of the following best describes chromatin in a non-dividing cell?

Accepted Answer

Dispersed, uncoiled, and not individually visible

Question 13

A researcher is studying the rough endoplasmic reticulum (RER). Which of the following best explains why ribosomes are attached to the RER?

Accepted Answer

To synthesize secretory, lysosomal, and membrane proteins

Question 14

Which of the following organelles is considered the 'cellular post office' because it modifies, sorts, and packages proteins for delivery?

Accepted Answer

Golgi apparatus

Question 15

Which equation best represents the division of fluid compartments by the cell membrane?

Accepted Answer

$$	ext{Cell Membrane} : ICF \mid ECF$$

Question 16

Which of the following is a non-membranous organelle responsible for protein synthesis?

Accepted Answer

Ribosome

Question 17

A cell is observed to have a large number of microvilli. What is the most likely function of this cell?

Accepted Answer

Increasing surface area for absorption

Question 18

Which of the following best describes the role of centrioles in the cell?

Accepted Answer

They organize microtubules for cell division.

Question 19

Which of the following structures is formed from proteins and provides structural support for the cell?

Accepted Answer

Cytoskeleton

Question 20

Which of the following is true about the nuclear envelope?

Accepted Answer

It is a double membrane that separates the nucleus from the cytoplasm.

Cell Structure and Function: Anatomy & Physiology Study Notes

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