What does 'culturing' bacteria mean?

Culturing bacteria refers to growing them in a controlled laboratory environment.

Answer in your head, out loud, or on paper, then tap the card to flip.

What conditions do bacteria need to grow?

Warmth, nutrients, moisture, and sometimes oxygen.

Answer in your head, out loud, or on paper, then tap the card to flip.

How often can bacteria multiply under optimal conditions?

Some bacteria can multiply as often as once every 20 minutes.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is nutrient broth?

A liquid medium containing nutrients for bacterial growth.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is agar?

A gel-like substance used as a solid medium to culture bacteria.

Answer in your head, out loud, or on paper, then tap the card to flip.

What is a bacterial colony?

A visible cluster of bacteria grown from a single bacterium.

Answer in your head, out loud, or on paper, then tap the card to flip.

What are aseptic techniques?

Procedures used to prevent contamination during the culturing of microorganisms.

Answer in your head, out loud, or on paper, then tap the card to flip.

Why are incubators set to a maximum of 25°C when growing bacteria?

To prevent the growth of harmful pathogens that prefer body temperature and so that bacteria don't multiple too quickly. 

Answer in your head, out loud, or on paper, then tap the card to flip.

What is a zone of inhibition?

A clear area on an agar plate where bacteria have not grown due to an antibiotic's effect.

Answer in your head, out loud, or on paper, then tap the card to flip.

How do you calculate the area of a zone of inhibition?

Using the formula: area = πr2.

Answer in your head, out loud, or on paper, then tap the card to flip.

What does a large zone of inhibition indicate?

The antibiotic is very effective at killing the bacteria.

Answer in your head, out loud, or on paper, then tap the card to flip.

What does a small or no zone of inhibition indicate?

The antibiotic is not effective or only somewhat effective at killing the bacteria.

Answer in your head, out loud, or on paper, then tap the card to flip.