Question 1

Which of the following structures is responsible for the movement of bacteria through their environment?

Accepted Answer

Flagella

Question 2

A patient stops taking antibiotics before completing the prescribed course for a kidney infection. Which of the following is a likely consequence?

Accepted Answer

The bacteria may develop resistance, leading to a recurrent or more severe infection.

Question 3

Which of the following is NOT a characteristic of prokaryotic cells?

Accepted Answer

Presence of membrane-bound organelles

Question 4

Which structure allows bacteria to adhere to surfaces and to each other, playing a key role in biofilm formation?

Accepted Answer

Fimbriae

Question 5

Which of the following best describes the composition of a bacterial cell wall?

Accepted Answer

Peptidoglycan

Question 6

Gram-negative bacteria are distinguished from Gram-positive bacteria by which of the following features?

Accepted Answer

Presence of an outer membrane containing lipopolysaccharide (LPS)

Question 7

Which of the following is a function of the glycocalyx in bacteria?

Accepted Answer

Protection from desiccation and evasion of host immune response

Question 8

Which arrangement of flagella would allow a bacterium to move most efficiently toward a chemical attractant?

Accepted Answer

Peritrichous

Question 9

Which of the following processes is NOT exclusive to eukaryotic cells, but also occurs in bacteria?

Accepted Answer

All of the above

Question 10

A scientist observes a cell with a nucleus, mitochondria, and a diameter of 20 μm. This cell is most likely:

Accepted Answer

A eukaryotic cell

Question 11

Which of the following is NOT a function of the bacterial cell wall?

Accepted Answer

Synthesizing proteins

Question 12

Which of the following statements about fimbriae and pili is TRUE?

Accepted Answer

Pili are involved in the transfer of DNA between cells

Question 13

Which of the following best describes chemotaxis in bacteria?

Accepted Answer

Movement toward or away from a chemical stimulus

Question 14

Which of the following is NOT a component of bacterial flagella?

Accepted Answer

Fimbria

Question 15

Which of the following is a distinguishing feature of Gram-positive bacterial cell walls?

Accepted Answer

Presence of teichoic acids

Question 16

A bacterium with an axial filament is most likely to exhibit which type of movement?

Accepted Answer

Corkscrew motion

Question 17

Which of the following is true about the arrangement of cocci in staphylococcus?

Accepted Answer

They are arranged in clusters

Question 18

Which of the following statements about viruses is correct based on the characteristics of life?

Accepted Answer

Viruses require a host cell to replicate

Question 19

Which of the following is a function of the capsule in bacteria?

Accepted Answer

Prevents recognition by host immune cells

Question 20

Which of the following best explains why some bacteria are mistaken for viruses?

Accepted Answer

They lack a cell wall and are very small

Chpt 3 Cell Structure and Function: Prokaryotic and Eukaryotic Cells

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