Question

Select all statements that are true about Tetracyclines:

-thick peptidoglycan wall
-peptidoglycan wall is in the periplasmic space
-has a single plasma membrane
-has an inner and outer cell membrane
-it stains blue (dark purple) with crystal violet
-it stains red (pink) with safranin counter stain
-can be treated with penicillin
-can be treated with fluoroquinolones
-can be treated with sulfa- antibiotics

Answer 1

Tetracyclines have a peptidoglycan wall in the periplasmic space and cannot be treated with penicillin, fluoroquinolones, or sulfa-antibiotics.

Step-by-step explanation:

Tetracyclines are a class of antibiotics that target bacterial peptidoglycans. Regarding the statements given:

1. Tetracyclines do not affect the thickness of the peptidoglycan wall, so this statement is false.
2. Peptidoglycan wall is located in the periplasmic space, so this statement is true.
3. Tetracyclines do not affect the number or structure of cell membranes, so this statement is false.
4. Inner and outer cell membranes are found in Gram-negative bacteria, not specifically in tetracyclines, so this statement is false.
5. Tetracyclines do not have a specific color when stained with crystal violet or safranin, so both of these statements are false.
6. Tetracyclines cannot be treated with penicillin, fluoroquinolones, or sulfa-antibiotics, so all three of these statements are false.

Therefore, the true statements about tetracyclines are that the peptidoglycan wall is in the periplasmic space and they cannot be treated with penicillin, fluoroquinolones, or sulfa-antibiotics.