Question 1

Which of the following best describes the function of the cell membrane in human cells?

Accepted Answer

It provides physical isolation, regulates exchange with the environment, enables communication, and offers structural support.

Question 2

Which of the following is NOT considered a major body cavity?

Accepted Answer

Vertebral cavity

Question 3

A patient presents with excess cerebrospinal fluid (CSF) accumulation. In which body compartment is this fluid found?

Accepted Answer

Cranial cavity

Question 4

Which of the following statements about extracellular fluid (ECF) is correct?

Accepted Answer

ECF includes plasma and interstitial fluid.

Question 5

The phospholipid bilayer of the cell membrane is primarily responsible for which of the following?

Accepted Answer

Creating a selectively permeable barrier between the cell and its environment

Question 6

Which organelle is most directly involved in ATP production and contains its own unique DNA?

Accepted Answer

Mitochondria

Question 7

A researcher is studying the movement of vesicles along microtubules in a cell. Which motor protein is primarily responsible for this process?

Accepted Answer

Kinesin

Question 8

Which of the following best describes the difference between plasma and interstitial fluid?

Accepted Answer

Plasma is the extracellular fluid within blood vessels, while interstitial fluid surrounds most cells.

Question 9

Which of the following is NOT a function of the cytoskeleton?

Accepted Answer

Synthesizing ATP for cellular energy

Question 10

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

Accepted Answer

Protein assembly and modification

Question 11

Which of the following best explains why the lumen of the intestines is not considered part of the body's internal environment?

Accepted Answer

It is technically outside the body until substances are absorbed across the epithelial lining.

Question 12

Which of the following cell membrane components is most important for cell recognition and immune response?

Accepted Answer

Carbohydrates (glycoproteins and glycolipids)

Question 13

A mutation affects the assembly of microtubules in a cell. Which cellular process is most likely to be disrupted?

Accepted Answer

Movement of cilia and flagella

Question 14

Which of the following is a correct description of the fluid compartments in the human body?

Accepted Answer

Extracellular fluid (ECF) includes plasma and interstitial fluid.

Question 15

Which of the following best describes the structure of the cell membrane?

Accepted Answer

A bilayer of phospholipids with embedded proteins and carbohydrates

Question 16

Which organelle is responsible for the synthesis of fatty acids, steroids, and lipids?

Accepted Answer

Smooth endoplasmic reticulum

Question 17

Which of the following is a function of motor proteins in the cell?

Accepted Answer

Muscle contraction and movement of vesicles along microtubules

Question 18

A scientist observes a cell with many polyribosomes. What is the likely function of these structures?

Accepted Answer

Protein synthesis

Question 19

Which of the following best describes the role of cholesterol in the cell membrane?

Accepted Answer

It stabilizes the membrane and affects its fluidity.

Question 20

Which of the following is NOT a type of protein found in the cell membrane?

Accepted Answer

Nuclear

Compartmentation: Cells and Tissues – Body Compartments and Membranes

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