Chapters Two and Three Quiz Questions

Question 1

Which of the following is the most common method used to examine bacteria? This is the method we used in lab 1.

Answer 1

Light microscopy using brightfield illumination.

Question 2

Which of the following is NOT true about prokaryotic cell membranes?

Answer 2

Some bacteria do not have a cell membrane, instead they have an S-layer

Question 3

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

Answer 3

Location in which ATP is produced

Question 4

Which of the following is a major component of bacterial cell walls, that is not found in other organisms?

Answer 4

Peptidoglycan

Question 5

Match each of the following as occurring in Gram-positive, Gram-negative, or Acid-fast Bacterial cell walls.
1. Gram-positive
2. Gram-negative
3. Acid-fast

Answer 5

Question 6

Which of the following is NOT a common component of the bacterial cell wall?

-Isoprenoids as part of the lipid component
-D-form amino acids as part of the peptide component
-L-form amino acids as part of the peptide component
-N-acetylglucosamine as part of the repeated disaccharide
-N-acetylmuramic acid as part of the repeated disaccharide

Answer 6

Isoprenoids as part of the lipid component

Question 7

Which of the following does not have a cell wall?
Gram-positive/negative bacteria, acid-fast bacteria, mycoplasma.

Answer 7

Mycoplasma.

Question 8

Which of the following is a neatly organized and firmly attached layer found outside the cell wall of certain bacteria and is considered a virulence factor?
Capsule, Slime layer, Axial filament, Pilus

Answer 8

Capsule

Question 9

Flagella are used in motility for bacteria. Which of the following does NOT describe how flagella function for bacteria?

-Flagella rotate to propel bacteria forward
-Bacteria may have different flagellar arrangements
-Bacteria move forward when their flagella allow them to run
-Flagella move in a wavelike fashion to move bacteria forward
-Bacteria change direction via tumbling

Answer 9

Flagella move in a wavelike fashion to move bacteria forward

Question 10

Bacteria that have flagella covering the entire cell would be described as?

Answer 10

Peritrichous

Question 11

Bacteria may have short, hairlike appendages covering their surface that allow them to attach to surfaces. What are these called?

Answer 11

Pili