Question 1

Which of the following provides the strongest evidence supporting the endosymbiotic theory for the origin of mitochondria in eukaryotic cells?

Accepted Answer

Mitochondria have a double membrane and their own circular DNA, similar to bacteria. $$ $$

Question 2

Which of the following is NOT a difference between prokaryotic and eukaryotic cells?

Accepted Answer

Presence of a plasma membrane. $$ $$

Question 3

A scientist discovers a unicellular organism with a nucleus, mitochondria, and chloroplasts. To which kingdom does this organism most likely belong?

Accepted Answer

Protista $$ $$

Question 4

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

Accepted Answer

Modification, sorting, and packaging of proteins for secretion. $$ $$

Question 5

Which structure is present in eukaryotic cells but absent in prokaryotic cells?

Accepted Answer

Nucleus $$ $$

Question 6

A patient is diagnosed with malaria, a disease caused by a eukaryotic protist. Which of the following features distinguishes the causative agent from bacteria?

Accepted Answer

Presence of membrane-bound organelles $$ $$

Question 7

Which of the following evolutionary developments most directly enabled the emergence of complex multicellular eukaryotes?

Accepted Answer

Development of compartmentalized organelles $$ $$

Question 8

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

Accepted Answer

Maintaining cell shape and facilitating intracellular transport $$ $$

Question 9

Which of the following best explains why animal and plant cells differ in their extracellular structures?

Accepted Answer

Plant cells have a rigid cell wall composed of cellulose, while animal cells have an extracellular matrix rich in proteins like collagen. $$ $$

Question 10

Which of the following correctly matches a eukaryotic cell structure with its function?

Accepted Answer

Lysosome: digestion of macromolecules $$ $$

Question 11

Which of the following is a key difference between the flagella of eukaryotes and prokaryotes?

Accepted Answer

Eukaryotic flagella have a $$ 9+2 $$ arrangement of microtubules, while prokaryotic flagella are composed of flagellin protein. $$ $$

Question 12

A cell is observed to have a cell wall, chloroplasts, and a large central vacuole. Which kingdom does it most likely belong to?

Accepted Answer

Plantae $$ $$

Question 13

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

Accepted Answer

Production of ATP via oxidative phosphorylation $$ $$

Question 14

Which of the following is NOT a characteristic of all eukaryotic cells?

Accepted Answer

Presence of a peptidoglycan cell wall $$ $$

Question 15

Which of the following best describes the evolutionary advantage of compartmentalization in eukaryotic cells?

Accepted Answer

It allows for specialized environments that optimize different metabolic processes. $$ $$

Question 16

Which of the following is a correct pairing of a eukaryotic organelle and its primary function?

Accepted Answer

Nucleus: storage and transmission of genetic information $$ $$

Question 17

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

Accepted Answer

Eukaryotic chromosomes are linear and associated with histone proteins. $$ $$

Question 18

Which of the following is a function of the eukaryotic cell's plasma membrane?

Accepted Answer

Regulation of the movement of substances into and out of the cell $$ $$

Question 19

Which of the following best explains why eukaryotic cells can be much larger than prokaryotic cells?

Accepted Answer

Eukaryotic cells have internal membranes that increase surface area for metabolic processes. $$ $$

Question 20

Which of the following is a key function of the eukaryotic cell's extracellular matrix?

Accepted Answer

Providing structural support and mediating cell signaling $$ $$

Fundamental Concepts in Eukaryotic Cell Biology and Microbiology

Guida di studio - Domande di pratica

Study guide - Flashcard