Question 1

Which of the following statements best explains why cells are considered the fundamental units of life?

Accepted Answer

Cells are the smallest structures that can carry out all the functions necessary for life.

Question 2

A scientist observes a cell with no membrane-bound nucleus and no organelles, but with DNA located in a nucleoid region. Which type of cell is being observed?

Accepted Answer

Prokaryotic cell

Question 3

Why is the surface area-to-volume ratio important in determining the maximum size of a cell?

Accepted Answer

As a cell grows, its volume increases faster than its surface area, limiting efficient exchange of materials.

Question 4

Which organelle is responsible for synthesizing proteins that are exported from the cell?

Accepted Answer

Ribosomes attached to the rough endoplasmic reticulum

Question 5

A mutation disables the function of lysosomes in an animal cell. Which cellular process would be most directly affected?

Accepted Answer

Digestion of macromolecules and cellular waste

Question 6

Which structure is found in plant cells but not in animal cells, and is primarily responsible for maintaining turgor pressure?

Accepted Answer

Central vacuole

Question 7

Which of the following best describes the function of the plasma membrane?

Accepted Answer

It regulates the movement of materials into and out of the cell.

Question 8

A cell is observed to have a cell wall, chloroplasts, and a large central vacuole. Which type of cell is this most likely to be?

Accepted Answer

Plant cell

Question 9

Which organelle converts solar energy into chemical energy in the form of glucose?

Accepted Answer

Chloroplast

Question 10

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

Accepted Answer

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

Question 11

Which of the following is a function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Modifying, packaging, and shipping proteins and lipids

Question 12

Which cellular structure is directly involved in the movement of chromosomes during mitosis in animal cells?

Accepted Answer

Centrioles (centrosome)

Question 13

Which of the following statements about compartmentalization in eukaryotic cells is correct?

Accepted Answer

Compartmentalization allows specialized functions to occur in different organelles.

Question 14

A patient has a genetic disorder that affects the structure of microtubules. Which cellular process is most likely to be impaired?

Accepted Answer

Movement of organelles and cell division

Question 15

Which of the following best describes the difference between passive and active transport across the plasma membrane?

Accepted Answer

Passive transport does not require energy, while active transport requires ATP to move substances against their concentration gradient.

Question 16

Which process involves the cell membrane folding inward to engulf large particles, forming a vesicle?

Accepted Answer

Endocytosis

Question 17

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

Accepted Answer

Synthesizing carbohydrates

Question 18

Which organelle contains its own DNA and ribosomes, supporting the endosymbiotic theory of evolution?

Accepted Answer

Mitochondria

Question 19

Which of the following structures is present in both prokaryotic and eukaryotic cells?

Accepted Answer

Ribosomes

Question 20

A cell is placed in a solution with a higher concentration of solutes than inside the cell. Which process will most likely occur?

Accepted Answer

Water will move out of the cell by osmosis, causing the cell to shrink.

Chapter 4: A Tour of the Cell – General Biology Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards