Question 1

Which organelle is primarily responsible for producing ATP through aerobic cellular respiration in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 2

A cell is observed to have an abundance of rough endoplasmic reticulum (RER). What is the most likely function of this cell?

Accepted Answer

Synthesis and secretion of proteins

Question 3

Which of the following best describes the function of lysosomes in phagocytic cells?

Accepted Answer

Digesting engulfed particles and cellular debris

Question 4

Microfilaments are primarily composed of which protein, and what is their main role in the cell?

Accepted Answer

Actin; enabling cell motility and changes in cell shape

Question 5

Which organelle is most involved in the detoxification of drugs and synthesis of steroid hormones?

Accepted Answer

Smooth endoplasmic reticulum

Question 6

A mutation disrupts the function of peroxisomes in liver cells. Which process would be most directly affected?

Accepted Answer

Detoxification of harmful substances

Question 7

Which of the following best explains why mitochondria are often called the 'powerhouse of the cell'?

Accepted Answer

They generate ATP by capturing energy from the breakdown of food molecules

Question 8

What is the main function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Concentrating, packaging, and modifying proteins and lipids

Question 9

Which cytoskeletal element is most responsible for resisting tension and providing mechanical strength to cells?

Accepted Answer

Intermediate filaments

Question 10

A scientist observes a cell with numerous microtubules forming hollow tubes. Which function is most likely associated with these structures?

Accepted Answer

Transport of organelles and formation of cilia and flagella

Question 11

During cell division, which structure organizes the mitotic spindle and is found near the nucleus?

Accepted Answer

Centrosome

Question 12

Which of the following is TRUE regarding cilia and flagella?

Accepted Answer

Cilia are shorter and more numerous than flagella

Question 13

Which process occurs in the mitochondria and is summarized by the equation $$ \mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy} $$?

Accepted Answer

Aerobic cellular respiration

Question 14

A cell is unable to break down fatty acids and hydrogen peroxide efficiently. Which organelle is most likely defective?

Accepted Answer

Peroxisome

Question 15

Which of the following best describes the role of ribosomes attached to the rough ER?

Accepted Answer

Producing proteins for secretion or membrane insertion

Question 16

Which organelle is most likely to be abundant in phagocytic cells such as macrophages?

Accepted Answer

Lysosomes

Question 17

Which of the following is a function of the smooth endoplasmic reticulum in liver cells?

Accepted Answer

Detoxifying drugs and chemicals

Question 18

Which cytoskeletal element forms the core of cilia and flagella and is composed of tubulin?

Accepted Answer

Microtubules

Question 19

A cell is observed to have a highly developed Golgi apparatus. What is the most likely function of this cell?

Accepted Answer

Secretion of proteins and lipids

Question 20

Which of the following organelles is NOT part of the endomembrane system?

Accepted Answer

Mitochondrion

Cell Organelles and Cytoskeleton: Structure and Function in Anatomy & Physiology

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