Question 1

Which of the following organelles is responsible for ATP production through aerobic respiration in human cells?

Accepted Answer

Mitochondria

Question 2

A scientist observes a cell with abundant microvilli on its surface. What is the most likely function of this cell?

Accepted Answer

Increase in surface area for absorption

Question 3

Which of the following is NOT a nonmembranous organelle?

Accepted Answer

Golgi apparatus

Question 4

During cell division, which organelle directs the movement of chromosomes?

Accepted Answer

Centrioles

Question 5

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

Accepted Answer

Autolysis of injured cells

Question 6

Which organelle is responsible for packaging and modifying proteins for secretion?

Accepted Answer

Golgi apparatus

Question 7

What is the main function of peroxisomes in the cell?

Accepted Answer

Neutralization of toxins

Question 8

Which of the following best describes the difference between rough and smooth endoplasmic reticulum?

Accepted Answer

Rough ER contains ribosomes and is involved in protein synthesis; smooth ER lacks ribosomes and is involved in lipid synthesis

Question 9

A cell is observed to have an extensive network of microfilaments, intermediate filaments, and microtubules. What is the primary function of these structures?

Accepted Answer

Provide strength and flexibility to the cell

Question 10

Which of the following organelles is directly involved in the continuous movement and recycling of membranes within the cell?

Accepted Answer

Endoplasmic reticulum

Question 11

If a cell's ribosomes are tagged with ubiquitin, which organelle will most likely interact with them?

Accepted Answer

Proteasomes

Question 12

Which of the following best explains why cilia are anchored by a basal body?

Accepted Answer

To provide a foundation for rhythmic movement of fluids across the cell surface

Question 13

A cell is observed to have many secretory vesicles. Which organelle is most likely responsible for forming these vesicles?

Accepted Answer

Golgi apparatus

Question 14

Which of the following is a function of the Golgi apparatus?

Accepted Answer

Formation of new membrane components

Question 15

Which organelle is filled with digestive enzymes and is responsible for autolysis?

Accepted Answer

Lysosome

Question 16

Which of the following best describes the cytosol?

Accepted Answer

The fluid portion of the cytoplasm

Question 17

A cell is unable to synthesize lipids efficiently. Which organelle is most likely malfunctioning?

Accepted Answer

Smooth endoplasmic reticulum

Question 18

Which of the following organelles is composed of a large and a small subunit and contains ribosomal RNA (rRNA)?

Accepted Answer

Ribosome

Question 19

Which process is most directly associated with the function of the rough endoplasmic reticulum?

Accepted Answer

Protein synthesis

Question 20

If a cell is exposed to a toxin that disrupts the formation of cisternae, which organelle's function will be most affected?

Accepted Answer

Endoplasmic reticulum

Cellular Level of Organization: Cytoplasm and Organelles

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