During cellular respiration, the covalent bonds of a molecule are broken down to make products. Which molecule is broken down?(1 point)

Question

Responses

sugar
sugar

ADP
ADP

water
water

carbon dioxide

During cellular respiration, four total ATP are produced when pyruvic acid is created. What else is produced as a result of this reaction?(1 point)
Responses

water
water

oxygen
oxygen

sugar
sugar

heat

Why does hydrogen bond so tightly to oxygen during cellular respiration?(1 point)
Responses

It is more electronegative than oxygen.
It is more electronegative than oxygen.

It is less electronegative than oxygen.
It is less electronegative than oxygen.

It is not electronegative, but oxygen is.
It is not electronegative, but oxygen is.

It is electronegative, but oxygen is not.

Identify the byproduct of lactic acid fermentation.(1 point)
Responses

oxygen
oxygen

carbon dioxide
carbon dioxide

lactic acid
lactic acid

pyruvic acid

When a reaction releases more energy than it uses, it is called(1 point)
Responses

catalyst
catalyst

exothermic
exothermic

lactic
lactic

emeritus

Answer 1

Here are the correct responses to your questions regarding cellular respiration and fermentation:

1. During cellular respiration, which molecule is broken down?

   • sugar

2. During cellular respiration, four total ATP are produced when pyruvic acid is created. What else is produced as a result of this reaction?

   • water

3. Why does hydrogen bond so tightly to oxygen during cellular respiration?

   • It is less electronegative than oxygen. (Please note that hydrogen doesn’t bond tightly to oxygen; rather, oxygen is more electronegative than hydrogen, resulting in polar covalent bonds.)

4. Identify the byproduct of lactic acid fermentation.

   • lactic acid

5. When a reaction releases more energy than it uses, it is called:

   • exothermic