Q: Which of the following equations correctly represents the relationship between the surface area and volume of a cube-shaped cell as its size increases?

$$\text{Surface Area} = 6l^2$, $$\text{Volume} = $$l^3$$

Question 1

Which of the following statements best describes the main difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells have a true nucleus enclosed by a double membrane, while prokaryotic cells have DNA free in the cytoplasm.

Question 2

Which organelle is responsible for the synthesis of secretory proteins and is highly developed in cells of the pancreas?

Accepted Answer

Rough endoplasmic reticulum

Question 3

A scientist observes a cell with a large central vacuole, chloroplasts, and a cell wall. Which type of cell is being observed?

Accepted Answer

Plant cell

Question 4

Which of the following best explains why cells are typically small in size?

Accepted Answer

Smaller cells have a higher surface area-to-volume ratio, which facilitates efficient exchange of materials with the environment.

Question 5

Which of the following organelles is responsible for modifying, sorting, and packaging proteins for secretion?

Accepted Answer

Golgi apparatus

Question 6

A cell is observed to have many lysosomes. Which of the following is the most likely function of this cell?

Accepted Answer

Intracellular digestion and recycling of cellular components

Question 7

Which of the following equations correctly represents the relationship between the surface area and volume of a cube-shaped cell as its size increases?

Accepted Answer

$$	ext{Surface Area} = 6l^2$, $$	ext{Volume} = $$l^3$$

Question 8

Which of the following structures is found in animal cells but not in plant cells?

Accepted Answer

Centrioles

Question 9

A mutation prevents the formation of microtubules in a cell. Which of the following processes would be most directly affected?

Accepted Answer

Cell division and movement of cilia/flagella

Question 10

Which of the following best describes the function of the nucleolus?

Accepted Answer

It manufactures ribosomal RNA, a major component of ribosomes.

Question 11

Which of the following is a function of the smooth endoplasmic reticulum?

Accepted Answer

Detoxification of drugs and synthesis of lipids

Question 12

Which of the following statements about mitochondria and chloroplasts is correct?

Accepted Answer

Both contain their own DNA and are capable of self-replication.

Question 13

A white blood cell engulfs a bacterium by extending its membrane around the bacterium and forming a vesicle. This process is best described as:

Accepted Answer

Phagocytosis

Question 14

Which of the following best explains the role of the Golgi apparatus in enzyme activation?

Accepted Answer

It modifies enzymes by adding or removing carbohydrates, activating them before shipping.

Question 15

Which of the following is a function of the cytoskeleton in eukaryotic cells?

Accepted Answer

Providing mechanical support and facilitating intracellular transport

Question 16

Which of the following best describes the function of plasmodesmata in plant cells?

Accepted Answer

They are channels that allow communication and transport between adjacent plant cells.

Question 17

A cell is observed to have a large number of contractile vacuoles. This cell most likely belongs to:

Accepted Answer

A protist living in a freshwater environment

Question 18

Which of the following best describes the relationship between the endoplasmic reticulum, Golgi apparatus, and lysosomes in the endomembrane system?

Accepted Answer

Proteins are synthesized in the ER, modified and sorted in the Golgi apparatus, and delivered to lysosomes for digestion.

Question 19

Which of the following is a real-world example of the importance of cilia in human health?

Accepted Answer

Cilia in the trachea help move mucus and debris out of the respiratory tract; smoking destroys cilia, leading to coughing and emphysema.

Question 20

Which of the following best describes the function of the central vacuole in plant cells?

Accepted Answer

It regulates water balance, stores pigments, ions, and waste products.

Cell Structure and Function: A Tour of the Cell

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