Q: Which equation correctly represents the surface area-to-volume ratio for a cube?

$$\frac{\text{surface area}}{\text{volume}}$$

Question 1

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

Accepted Answer

Smaller cells have a higher surface area-to-volume ratio, which allows for more efficient exchange of materials with their environment.

Question 2

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

Accepted Answer

Ribosomes

Question 3

A scientist observes a cell with a double-membrane-bound nucleus, mitochondria, and various organelles. To which domain does this cell most likely belong?

Accepted Answer

Eukarya

Question 4

Which organelle is responsible for modifying, sorting, and packaging proteins for secretion or delivery to other organelles?

Accepted Answer

Golgi apparatus

Question 5

A patient is diagnosed with a genetic disorder that results in the accumulation of GM2 ganglioside in neurons. Which organelle is most likely malfunctioning?

Accepted Answer

Lysosome

Question 6

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

Accepted Answer

It modifies proteins for secretion and sends transport vesicles to the Golgi apparatus.

Question 7

According to the endosymbiotic theory, which of the following is NOT evidence that mitochondria originated from free-living prokaryotes?

Accepted Answer

Mitochondria are found in all prokaryotic cells.

Question 8

Which equation correctly represents the surface area-to-volume ratio for a cube?

Accepted Answer

$$\frac{	ext{surface area}}{	ext{volume}}$$

Question 9

Which of the following is a function of the central vacuole in plant cells?

Accepted Answer

Storage of water and other substances

Question 10

A cell is observed to have a rigid outer structure made of cellulose. Which type of cell is this most likely to be?

Accepted Answer

Plant cell

Question 11

Which of the following best explains why mitochondria are essential for most eukaryotic cells?

Accepted Answer

They provide energy in the form of ATP through cellular respiration.

Question 12

Which of the following structures is directly involved in the movement of chromosomes during cell division in animal cells?

Accepted Answer

Centrosome

Question 13

A mutation causes a cell to lack functional cilia. Which of the following symptoms would most likely be observed in a human with this condition?

Accepted Answer

Frequent respiratory infections

Question 14

Which of the following best describes the function of the extracellular matrix in animal cells?

Accepted Answer

It strengthens tissues and transmits external signals to the cell.

Question 15

Which of the following intercellular junctions allows for the direct transfer of ions and small molecules between adjacent animal cells?

Accepted Answer

Gap junctions

Question 16

Which of the following is NOT a component of the endomembrane system?

Accepted Answer

Mitochondria

Question 17

A cell is observed to have a high number of peroxisomes. Which of the following is the most likely function of this cell?

Accepted Answer

Detoxification of harmful substances

Question 18

Which of the following best describes the role of ribosomes in the cell?

Accepted Answer

They synthesize proteins by translating mRNA.

Question 19

Which of the following is a key difference between prokaryotic and eukaryotic cells?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles.

Question 20

A plant cell is placed in a hypotonic solution. Which of the following best describes what will happen to the central vacuole?

Accepted Answer

It will swell as water enters the cell.

Cell Structures and Functions: General Biology Study Guide

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