MI 1.2.1 Antibiotic Therapy

This antibiotic works by making it difficult for the bacteria to form cell walls (capsule) correctly. The peptidoglycan can't cross-link, so the walls are weak, and the cells burst. It actually kills bacteria, not inhibits them.

• Tetracyclines

• Penicillin (beta-lactam)

• Fluoriquinolones

• Sulfa antibiotics (sulfonamids)

This antibiotic works by binding to ribosomes. The bacteria can't synthesize proteins, and thus can't reproduce.

• Tetracyclines

• Penicillin (beta-lactam)

• Fluoriquinolones

• Sulfa antibiotics (sulfonamids)

This antibiotic works by interfering with bacteria's ability to copy their DNA. This stops them from reproducing.

• Tetracyclines

• Penicillin (beta-lactam)

• Fluoriquinolones

• Sulfa antibiotics (sulfonamids)

This antibiotic works by interfering with an B vitamin (folate) that bacteria require to survive. They can't reproduce or grow well without that vitamin.

• Tetracyclines

• Penicillin (beta-lactam)

• Fluoriquinolones

• Sulfa antibiotics (sulfonamids)

Which of these is the bacterium responsible for causing meningitis?

• a

• b

• c

• d

Which of these describes a gram-positive bacterium?

• Purple, has a capsule

• Purple, has no capsule

• Pink, has a capsule

• Pink, has no capsule

Where and what is an endotoxin?

• A poisonous or toxic substance inside a bacterium (part of the cell membrane)

• A large spore inside a bacterium

• A poisonous or toxic substance excreted by a bacterium

• A large spore produced on the outside of a bacterium

Which is a ribosome?

• a

• b

• c

• d

• e

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Which contains the cell's DNA?

• a

• b

• c

• d

• e

Tags

NGSS.MS-LS1-2

Thick peptidoglycan in cell wall

• Gram positive bacteria

• Gram negative bacteria