Bio Lab Quiz 1 Review

What is the purpose of the Kirby-Bauer Test?

• To test the effectiveness of antibiotics against bacteria.

• To measure the growth rate of bacteria.

• To identify different types of bacteria.

• To determine the pH level of a solution.

What does a larger clear zone in the Kirby-Bauer Test indicate?

• Bacteria are more sensitive to the antibiotic.

• Bacteria are resistant to the antibiotic.

• Bacteria are unaffected by the antibiotic.

• Bacteria are multiplying rapidly.

What does it mean if bacteria are described as "resistant"?

• Bacteria continue to grow despite the antibiotic.

• Bacteria are killed by the antibiotic.

• Bacteria are stopped by the antibiotic.

• Bacteria are sensitive to the antibiotic.

What is the first step in the Kirby-Bauer Test?

• Spread bacteria on the petri dish.

• Place antibiotic-soaked disks on the bacteria.

• Incubate the dish for 24 hours.

• Measure the clear zones around the disks.

Why is the Kirby-Bauer Test important?

• It helps doctors choose the right antibiotic for treating bacterial infections.

• It measures the temperature of bacterial growth.

• It identifies the color of bacterial colonies.

• It determines the age of bacteria.

What is the purpose of the Kirby-Bauer test?

• To determine the effectiveness of antibiotics

• To measure bacterial growth rate

• To identify bacterial species

• To test the pH level of a solution

Which antibiotic shows a zone of inhibition for Escherichia coli?

• Ampicillin

• Penicillin

• Vancomycin

• None

Which species shows resistance to all three antibiotics: Ampicillin, Penicillin, and Vancomycin?

• Enterobacter aerogenes

• Escherichia coli

• Staphylococcus epidermis

• Micrococcus luteus

What does a large zone of inhibition around an antibiotic disk indicate?

• Very effective antibiotic

• Ineffective antibiotic

• No bacterial growth

• Contaminated sample

What shape are cocci bacteria?

• Rod-shaped

• Spiral-shaped

• Round or spherical-shaped

• Irregular-shaped