Anaerobic Respiration and Fermentation

What is the primary purpose of fermentation in microorganisms?

• To produce oxygen

• To obtain energy without oxygen

• To consume carbon dioxide

• To increase sugar concentration

Tags

NGSS.HS-LS2-3

Why is oil used in the fermentation experiment setup?

• To measure the gas volume

• To act as a nutrient for yeast

• To increase the temperature

• To prevent oxygen from entering

Which indicator could be used to detect CO2 levels in the experiment?

• Hydrogen carbonate indicator

• Phenolphthalein

• Methyl orange

• Bromothymol blue

Tags

NGSS.HS-LS1-7

What variable can be altered to study its effect on the rate of fermentation?

• The color of the indicator

• The size of the boiling tube

• The type of yeast used

• The brand of sugar used

How can the reliability of the experiment be increased?

• By using a larger boiling tube

• By changing multiple variables at once

• By conducting the experiment once

• By repeating the experiment multiple times