Question 1

Which of the following best distinguishes eukaryotic cells from prokaryotic cells?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, such as mitochondria and a nucleus, while prokaryotic cells do not.

Question 2

Which of the following is a function of the rough endoplasmic reticulum (RER) in eukaryotic cells?

Accepted Answer

Protein synthesis and modification, due to the presence of ribosomes on its surface.

Question 3

A scientist observes a cell with a nucleus, mitochondria, and chloroplasts. Which type of organism is this cell most likely from?

Accepted Answer

A plant.

Question 4

Which of the following best describes the function of mitochondria in eukaryotic cells?

Accepted Answer

They generate ATP through aerobic respiration, providing energy for cellular processes.

Question 5

Which of the following statements about the relationship between the number of mitochondria and the activity level of a cell is correct?

Accepted Answer

Cells with higher activity levels have more mitochondria to meet increased energy demands.

Question 6

Which of the following best describes the process of phagocytosis?

Accepted Answer

The cell engulfs solid particles by wrapping its plasma membrane around them, forming a vesicle.

Question 7

Which of the following is a key difference between mitosis and meiosis in eukaryotic cells?

Accepted Answer

Mitosis is used for growth and repair, producing identical cells, while meiosis produces gametes with half the chromosome number.

Question 8

Which of the following best describes the function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

It modifies, sorts, and packages proteins and lipids for secretion or delivery to other organelles.

Question 9

A patient is diagnosed with a parasitic infection caused by a protozoan that moves using flagella. Which structure is responsible for this movement?

Accepted Answer

Flagellum

Question 10

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

Accepted Answer

Digestion of macromolecules and worn-out organelles using hydrolytic enzymes.

Question 11

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

Accepted Answer

They convert light energy into chemical energy through photosynthesis.

Question 12

Which of the following is a correct description of the cytoskeleton in eukaryotic cells?

Accepted Answer

It is composed of microtubules, microfilaments, and intermediate filaments that provide structural support and facilitate intracellular transport.

Question 13

Which of the following is a unique feature of eukaryotic flagella compared to prokaryotic flagella?

Accepted Answer

Eukaryotic flagella are composed of microtubules arranged in a 9+2 pattern and are covered by the plasma membrane.

Question 14

A cell is observed to have a large number of ribosomes attached to its endoplasmic reticulum. What is the most likely function of this cell?

Accepted Answer

Production of large amounts of proteins for export.

Question 15

Which of the following best describes the process of exocytosis in eukaryotic cells?

Accepted Answer

The cell releases substances to the exterior by fusion of vesicles with the plasma membrane.

Question 16

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

Accepted Answer

Breakdown of fatty acids and detoxification of hydrogen peroxide.

Question 17

Which of the following best describes the main function of the plasma membrane in eukaryotic cells?

Accepted Answer

It controls the movement of substances into and out of the cell, maintaining homeostasis.

Question 18

Which of the following is a correct statement about the nucleolus in eukaryotic cells?

Accepted Answer

It is responsible for ribosomal RNA synthesis and ribosome assembly.

Question 19

A patient is infected with a parasitic helminth. Which of the following is true about helminths?

Accepted Answer

They are multicellular eukaryotic organisms.

Question 20

Which of the following best describes the function of cilia in eukaryotic cells?

Accepted Answer

They move fluid, mucus, or cells over their surface by coordinated beating.

Eukaryotic Cell Structure and Function: Study Guide for Microbiology

Study Guide - Practice Questions