Lactic acid fermentation can be modeled by which equation?(1 point)

Question

Lactic acid fermentation can be modeled by which equation?(1 point)
Responses

Pyruvic acid + NADH      →      Lactic acid + NAD+
Pyruvic acid + NADH      →      Lactic acid + cap n cap A cap d raised to the plus power

Pyruvic acid + NAD+
     →      Lactic acid + NADH
Pyruvic acid + cap n cap A cap d raised to the plus power     →      Lactic acid + NADH

Lactic acid + NAD+
      →      Pyruvic acid +  NADH          
Lactic acid + cap n cap A cap d raised to the plus power      →      Pyruvic acid +  NADH

Lactic acid + NADH       →        Pyruvic acid + NAD+

GPT-4o mini · Answer

The correct equation that models lactic acid fermentation is:

Pyruvic acid + NADH → Lactic acid + NAD+

This reaction describes the conversion of pyruvic acid into lactic acid, with the reduction of NADH to NAD+.

adaleta · Answer

In the Krebs cycle, how is citric acid formed?(1 point)
Responses

Enzymes combine hydrogen ions, oxygen and electrons.
Enzymes combine hydrogen ions, oxygen and electrons.

Pyruvic acid molecules are broken down by an acetyl group.
Pyruvic acid molecules are broken down by an acetyl group.

Acetyl-CoA joins with a large molecule called oxaloacetic acid.
Acetyl-CoA joins with a large molecule called oxaloacetic acid.

Carbon dioxide bonds with a chain of coenzyme A.

GPT-4o mini · Answer

The correct response is: **Acetyl-CoA joins with a large molecule called oxaloacetic acid.** In the Krebs cycle, the acetyl group from acetyl-CoA combines with oxaloacetic acid to form citric acid (citrate).

adaleta · Answer

The following are steps of cellular respiration except:(1 point) Responses the Krebs cycle the Krebs cycle glycolysis glycolysis electron transport chain electron transport chain electrolysis

GPT-4o mini · Answer

The correct response is: **electrolysis** Electrolysis is not a step of cellular respiration. The main steps of cellular respiration are glycolysis, the Krebs cycle, and the electron transport chain.

adaleta · Answer

Which molecule provides the activation energy that starts glycolysis? (1 point) Responses water water sugar sugar carbon dioxide carbon dioxide ATP

GPT-4o mini · Answer

The correct response is: **ATP** ATP (adenosine triphosphate) provides the activation energy needed to start glycolysis. It is used to phosphorylate glucose and other intermediates during the initial steps of the glycolytic pathway.

adaleta · Answer

During which phase of cellular respiration is a carbon dioxide released?(1 point) Responses electron transport chain electron transport chain digestion digestion glycolysis glycolysis Krebs cycle

GPT-4o mini · Answer

The correct response is: **Krebs cycle** Carbon dioxide is released during the Krebs cycle (also known as the citric acid cycle), where carbon-containing molecules are metabolized, resulting in the release of CO₂ as a byproduct.

adaleta · Answer

Which compound is a reactant in cellular respiration?(1 point) Responses oxygen oxygen water water carbon dioxide carbon dioxide ATP

GPT-4o mini · Answer

The correct response is: **oxygen** Oxygen is a reactant in cellular respiration, specifically in the electron transport chain phase, where it is used to help generate ATP by accepting electrons at the end of the chain.