Question

which type of respiration occurs when microorganisms break down sugar without oxygen?
o a anaerobic respiration
o b aerobic respiration
o c photosynthesis
o d cellular respiration
question 13
what is the primary energy source for the microorganisms in ariels forgotten tea?
о а minerals in the water
o b sugar dissolved in the tea
o c oxygen from the air
o d caffeine from the tea leaves
question 14
which of the following best explains why ariels tea began to bubble during fermentation?
o a co, was produced by the microorganisms
o b water vapor condensed and escaped
o c o, was produced as a by the microorganisms
o d heat caused air pockets to form naturally

Explanation:

• Question 12: Anaerobic respiration is the process where microorganisms break down sugar without oxygen. Aerobic respiration requires oxygen. Photosynthesis is the process by which plants make food using sunlight. Cellular respiration can be aerobic or anaerobic, but the key here is the lack of oxygen which points to anaerobic.
• Question 13: Sugar is a common energy source for microorganisms. Minerals in water are not a primary energy source. Oxygen is used in aerobic respiration but not the energy source. Caffeine is not a primary energy source for most microorganisms.
• Question 14: During fermentation (a type of anaerobic respiration), carbon dioxide (\(CO_2\)) is produced as a by - product. Water vapor condensation would not cause bubbling in this context. \(O_2\) is not produced in fermentation (anaerobic). Heat - caused air pockets are not related to fermentation.

Answer:

• Question 12: A. Anaerobic respiration
• Question 13: B. Sugar dissolved in the tea
• Question 14: A. \(CO_2\) was produced by the microorganisms