Q: A mutation disrupts the function of ribosomes in a cell. Which process would be most directly affected?

Protein synthesis from amino acids $$\text{Amino Acids} \rightarrow \text{Protein}$$

Question 1

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

Accepted Answer

Smaller cells have a higher surface area-to-volume ratio, which facilitates efficient exchange of materials with the environment. $$	ext{Surface Area-to-Volume Ratio} = \frac{	ext{Surface Area}}{	ext{Volume}}$$

Question 2

A scientist wants to observe the internal structure of mitochondria at very high resolution. Which microscope should they use?

Accepted Answer

Transmission electron microscope (TEM)

Question 3

Which organelle is responsible for packaging, modifying, and shipping proteins and lipids within the cell?

Accepted Answer

Golgi apparatus

Question 4

Which of the following statements about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Prokaryotic cells lack a nucleus and membrane-bound organelles, while eukaryotic cells possess both.

Question 5

A mutation disrupts the function of ribosomes in a cell. Which process would be most directly affected?

Accepted Answer

Protein synthesis from amino acids $$	ext{Amino Acids} ightarrow 	ext{Protein}$$

Question 6

Which structure in plant cells is primarily responsible for maintaining turgor pressure?

Accepted Answer

Central vacuole

Question 7

Which organelle contains its own DNA and is involved in energy conversion?

Accepted Answer

Mitochondrion

Question 8

A cell is observed to have spindle fibers during division. Which cytoskeletal element is responsible for this structure?

Accepted Answer

Microtubule

Question 9

Which of the following best describes the function of tight junctions in epithelial tissue?

Accepted Answer

They create a seal between adjacent cells, preventing passage of molecules and ions.

Question 10

A patient’s liver cells are unable to detoxify alcohol efficiently. Which organelle is most likely malfunctioning?

Accepted Answer

Smooth endoplasmic reticulum

Question 11

Which of the following is a function of the plasma membrane?

Accepted Answer

Regulates the passage of substances into and out of the cell

Question 12

Which of the following best explains the endosymbiont theory?

Accepted Answer

Mitochondria and chloroplasts originated from free-living bacteria that were engulfed by ancestral eukaryotic cells.

Question 13

Which of the following cell structures is directly involved in immune cell communication?

Accepted Answer

Glycoprotein

Question 14

A mutation in the gene coding for collagen would most likely affect which part of the cell?

Accepted Answer

Extracellular matrix (ECM)

Question 15

Which of the following is a correct sequence for the transport of a protein from synthesis to secretion in a eukaryotic cell?

Accepted Answer

Rough ER $$\rightarrow$$ Golgi apparatus $$\rightarrow$$ plasma membrane

Question 16

Which of the following organelles is most abundant in muscle cells that require large amounts of energy?

Accepted Answer

Mitochondria

Question 17

Which cytoskeletal element is primarily responsible for amoeboid movement?

Accepted Answer

Microfilament

Question 18

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

Accepted Answer

Digesting and recycling cellular waste

Question 19

Which of the following best describes the role of integrins in animal cells?

Accepted Answer

They connect the extracellular matrix to the cytoskeleton, facilitating cell movement and adhesion.

Question 20

Which of the following junctions allows direct communication between adjacent animal cells by permitting the passage of ions and small molecules?

Accepted Answer

Gap junction

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

Study Guide - Practice Questions

Study Guide - Flashcards