Q: Which equation best represents the process occurring in mitochondria?

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + \text{energy}$$

Question 1

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

Accepted Answer

Mitochondrion

Question 2

A scientist observes a cell with a prominent nucleolus and a double-membraned nuclear envelope. What is the main function of the nucleolus?

Accepted Answer

Ribosome synthesis

Question 3

Which structure acts as a selective barrier, regulating the movement of substances into and out of the cell?

Accepted Answer

Cell membrane

Question 4

A patient’s cells are unable to break down cellular waste and foreign material, leading to accumulation of debris. Which organelle is most likely malfunctioning?

Accepted Answer

Lysosome

Question 5

Which organelle is responsible for packaging and modifying proteins for secretion or use within the cell?

Accepted Answer

Golgi apparatus

Question 6

During cell division, which structure helps organize the mitotic spindle?

Accepted Answer

Centrioles

Question 7

Which of the following best describes the function of ribosomes?

Accepted Answer

Protein synthesis

Question 8

A cell is observed to have an extensive network of smooth endoplasmic reticulum. What is the primary function of this organelle?

Accepted Answer

Lipid and steroid synthesis

Question 9

Which equation best represents the process occurring in mitochondria?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 	ext{energy}$$

Question 10

If a cell’s rough endoplasmic reticulum is damaged, which process will be most directly affected?

Accepted Answer

Protein synthesis for export

Question 11

Which organelle contains enzymes that detoxify harmful substances, such as hydrogen peroxide?

Accepted Answer

Peroxisome

Question 12

A cell is placed in a hypotonic solution. Which part of the cell is most responsible for maintaining its integrity as water enters?

Accepted Answer

Cell membrane

Question 13

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

Accepted Answer

Synthesizing proteins

Question 14

Which organelle is most abundant in cells that secrete large amounts of protein, such as pancreatic cells?

Accepted Answer

Rough endoplasmic reticulum

Question 15

A mutation causes a cell to lack centrioles. Which process will be most directly impaired?

Accepted Answer

Cell division (mitosis)

Question 16

Which of the following best describes the cytosol?

Accepted Answer

The fluid portion of the cytoplasm

Question 17

A cell is observed to have many lysosomes. What type of cell is this most likely to be?

Accepted Answer

Phagocytic immune cell

Question 18

Which organelle is directly involved in the synthesis of membrane lipids and detoxification of drugs?

Accepted Answer

Smooth endoplasmic reticulum

Question 19

Which of the following correctly matches the organelle with its function?

Accepted Answer

Golgi apparatus: modifies and packages proteins

Question 20

A cell is unable to produce ribosomes. Which process will be most directly affected?

Accepted Answer

Protein synthesis

Cell Structure and Function: Key Organelles and Their Roles

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