Question

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

carbon dioxide
carbon dioxide

ADP
ADP

water
water

sugar
sugar
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Answer
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

heat
heat

water
water

sugar
sugar

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

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

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

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

It is not electronegative, but oxygen is.
Answer
Identify the byproduct of lactic acid fermentation.(1 point)
Responses

carbon dioxide
carbon dioxide

oxygen
oxygen

lactic acid
lactic acid

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

catalyst
catalyst

exothermic
exothermic

lactic
lactic

emeritus
emeritus
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Answered by GPT-4o mini
The molecule that is broken down during cellular respiration is **sugar**. Specifically, glucose is the primary sugar that undergoes catabolism to produce energy in the form of ATP, along with carbon dioxide and water as byproducts.
Answered by GPT-4o mini
During cellular respiration, when pyruvic acid is created from glucose in glycolysis, the process also produces **heat** as one of the byproducts. Additionally, 2 ATP molecules are produced during glycolysis, and other products include NADH, but from the options given, heat is the correct choice.
Answered by GPT-4o mini
The correct response is: **It is less electronegative than oxygen.**

In a water molecule (H₂O), oxygen is more electronegative than hydrogen, which leads to a polar covalent bond. As a result, hydrogen forms a bond with oxygen, but it does so in a way that is not as strong as the bond between two atoms of the same element. In the context of cellular respiration, this difference in electronegativity contributes to the formation of hydrogen bonds, which are important for various biochemical processes.
Answered by GPT-4o mini
The byproduct of lactic acid fermentation is **lactic acid**. This process occurs in certain organisms, including muscle cells in humans, when oxygen is scarce, converting pyruvic acid into lactic acid to regenerate NAD+ for glycolysis.
Answered by GPT-4o mini
When a reaction releases more energy than it uses, it is called **exothermic**. Exothermic reactions result in the net release of energy, often in the form of heat.