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

$$\text{Glucose} + 6\mathrm{O_2$} \rightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 36\text{ATP}$$

Question 1

Which organelle is known as the 'powerhouse of the cell' and is primarily responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondrion

Question 2

A muscle cell requires large amounts of ATP for contraction. Which organelle would you expect to be especially abundant in muscle cells?

Accepted Answer

Mitochondria

Question 3

If a cell lacked mitochondria, which of the following would most likely occur?

Accepted Answer

The cell would lack energy for proper function and maintenance.

Question 4

Which organelle is involved in lipid synthesis and detoxification, and is especially abundant in liver cells?

Accepted Answer

Smooth endoplasmic reticulum

Question 5

A neuron requires rapid transmission of signals and high energy. Which two organelles would you expect to be prominent in neurons?

Accepted Answer

Mitochondria and rough endoplasmic reticulum

Question 6

Which of the following best describes the function of the rough endoplasmic reticulum?

Accepted Answer

Protein synthesis and modification

Question 7

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

Accepted Answer

Lipid synthesis and detoxification

Question 8

Which equation correctly represents the process of cellular respiration occurring in mitochondria?

Accepted Answer

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

Question 9

Which organelle is covered with ribosomes and is involved in the synthesis of proteins destined for secretion?

Accepted Answer

Rough endoplasmic reticulum

Question 10

A cell specialized for secretion of hormones would likely have a prominent:

Accepted Answer

Golgi apparatus

Question 11

Which of the following is a consequence of missing or defective smooth endoplasmic reticulum in liver cells?

Accepted Answer

Reduced detoxification of drugs and toxins

Question 12

Which organelle is responsible for packaging and modifying proteins before they are secreted from the cell?

Accepted Answer

Golgi apparatus

Question 13

A cell with high calcium ion requirements for signaling would likely have an abundance of which organelle?

Accepted Answer

Smooth endoplasmic reticulum

Question 14

Which of the following best explains why neurons and muscle cells have more mitochondria than skin cells?

Accepted Answer

They require more energy for their specialized functions.

Question 15

A cell is unable to efficiently produce ATP. Which organelle is most likely malfunctioning?

Accepted Answer

Mitochondria

Question 16

Which of the following is NOT a function of the smooth endoplasmic reticulum?

Accepted Answer

Protein synthesis

Question 17

A cell with a large number of ribosomes attached to its endoplasmic reticulum is most likely specialized for:

Accepted Answer

Protein synthesis

Question 18

Which of the following best describes the role of the Golgi apparatus in a secretory cell?

Accepted Answer

It packages and modifies proteins for secretion.

Question 19

A cell is observed to have a deficiency in detoxifying harmful substances. Which organelle is most likely underdeveloped or malfunctioning?

Accepted Answer

Smooth endoplasmic reticulum

Question 20

Which of the following equations represents the net production of ATP during aerobic respiration in mitochondria?

Accepted Answer

$$	ext{Glucose} + 6\mathrm{O_2$} ightarrow 6\mathrm{CO_2$} + 6\mathrm{H_2O} + 36	ext{ATP}$$

Cell Structure and Function: Key Organelles and Their Roles

Study Guide - Practice Questions