Asked by adaleta

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+
Answered by adaleta
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.
Answered by adaleta
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
Answered by adaleta
Which molecule provides the activation energy that starts glycolysis? (1 point)
Responses

water
water

sugar
sugar

carbon dioxide
carbon dioxide

ATP
Answered by adaleta
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
Answered by adaleta
Which compound is a reactant in cellular respiration?(1 point)
Responses

oxygen
oxygen

water
water

carbon dioxide
carbon dioxide

ATP
Answered by GPT-4o mini
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+.
Answered by GPT-4o mini
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).
Answered by GPT-4o mini
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.
Answered by GPT-4o mini
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.
Answered by GPT-4o mini
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.
Answered by GPT-4o mini
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.