Question 1

Which of the following best describes the function of the plasma membrane in a eukaryotic cell?

Accepted Answer

It is a selectively permeable barrier that regulates the movement of materials into and out of the cell.

Question 2

A scientist discovers a cell with the following characteristics: a nucleoid region, circular DNA, a cell wall, and no membrane-bound organelles. Which type of cell is this most likely to be?

Accepted Answer

A prokaryotic cell

Question 3

Which of the following structures is found in both prokaryotic and eukaryotic cells and is responsible for protein synthesis?

Accepted Answer

Ribosome

Question 4

A mutation causes a eukaryotic cell to lose its ability to produce vesicles. Which process would be most directly affected?

Accepted Answer

Transport of proteins between organelles

Question 5

Which of the following best explains why eukaryotic cells have compartmentalized organelles?

Accepted Answer

To provide localized environments for specific metabolic processes and sequester incompatible reactions

Question 6

A cell is observed to have a large number of mitochondria. What can you infer about this cell's function?

Accepted Answer

It requires a large amount of energy for its activities.

Question 7

Which of the following statements about the endomembrane system is correct?

Accepted Answer

It is responsible for the synthesis, modification, and transport of proteins and lipids.

Question 8

A researcher is studying a cell that contains thylakoids and grana. Which process is most likely occurring in this cell?

Accepted Answer

Photosynthesis

Question 9

Which of the following correctly matches the organelle with its function?

Accepted Answer

Lysosome – digestion of macromolecules

Question 10

A cell is exposed to a toxin that disrupts the function of its rough endoplasmic reticulum. Which of the following processes would be most directly impaired?

Accepted Answer

Synthesis of secretory proteins

Question 11

Which of the following best describes the difference between chromatin and chromosomes in eukaryotic cells?

Accepted Answer

Chromatin is a diffuse complex of DNA and proteins, while chromosomes are condensed, threadlike structures formed during cell division.

Question 12

A genetic disorder prevents the formation of the cytoskeleton in a cell. Which of the following would most likely be affected?

Accepted Answer

The cell's shape and ability to move organelles within the cytoplasm

Question 13

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

Accepted Answer

Modifying, sorting, and shipping proteins received from the endoplasmic reticulum

Question 14

A cell is observed to have a double membrane, its own DNA, and ribosomes, but is not part of the endomembrane system. Which organelle is this most likely to be?

Accepted Answer

Mitochondrion

Question 15

Which of the following best explains why mitochondria and chloroplasts are considered semi-autonomous organelles?

Accepted Answer

They contain their own DNA and ribosomes and can grow and reproduce independently within the cell.

Question 16

A patient has a genetic mutation that prevents the formation of lysosomes. Which of the following symptoms would you most likely expect?

Accepted Answer

Accumulation of undigested macromolecules within cells

Question 17

Which of the following correctly describes the pathway of a secretory protein in a eukaryotic cell?

Accepted Answer

Rough ER → Golgi apparatus → Vesicle → Plasma membrane

Question 18

Which of the following equations best represents the process of ATP production 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 19

Which of the following is a unique feature of prokaryotic cells that is not found in eukaryotic cells?

Accepted Answer

DNA located in a nucleoid region

Question 20

A cell is observed to have pili and flagella. What is the most likely function of these structures?

Accepted Answer

Pili are used for attachment to surfaces and flagella for movement.

Cell Structure and Function: General Biology Study Notes

Guida di studio - Domande di pratica

Study guide - Flashcard