MI 1.2 (2025)

During a biology class, Daniel, Elijah, and Oliver were studying different types of bacteria. They noticed that one type had a thick peptidoglycan layer in its cell wall. Which type of bacteria were they studying?

• Gram positive bacteria

• Gram negative bacteria

Stains purple

• Gram positive bacteria

• Gram negative bacteria

Based on the figure, which antibiotic inhibited the growth of the bacteria the most?

• A
• B
• C
• D

Antibiotic that disrupts DNA gyrase making DNA replication impossible

• Penicillins

• Tetracyclines

• Fluoroquinoline

• Sulfonamides

Sue Smith was infected with what pathogen

• viral meningitis

• mononucleosis

• influenza H1N1

• bacterial meningitis

How many antibiotics does the bacteria seem to be resistant to?

• 2

• 3

• All of them

• None of them

Answer explanation

Resistant bacteria is not killed by the antibiotics. There are 3 antibiotics on the bacteria in the petri dish that seem to be unaffected by the antibiotics. There are two antibiotics that have a large area around them where no bacteria is growing.

In our superbug lab, how did the 2 E coli strains transfer their DNA?

• conjugation

• transformation

• tranduction

It can be very dangerous if bacteria become resistance to antibiotics. What is NOT a cause of antibiotic resistance?

• taking antibiotics for a viral infection

• taking antibiotics as prescribed by your physician

• missing doses of your antibiotic

• not finishing your antibiotic because you are better

Antibiotic that inhibits cell wall formation causing water to rush in and the cell to burst

• Penicillins

• Tetracyclines

• Fluoroquinolones

• Sulfonamides

Antibiotic that inhibits the folic acid pathway making folic acid unavailable to the cell

• Penicillins

• Tetracyclines

• Fluoroquinolones

• Sulfanamides