Pyruvate undergoes oxidation when it loses electrons to? (Multiple Choice) !?

In this quiz, you will be asked about processes that happen in cells. Some of the questions may seem familiar, while others might be new to you. Be sure to read the instructions carefully before beginning!


Pyruvate undergoes oxidation when it loses electrons to?

A. Water
B. Fats
C. Redox reactions
E. Oxidizing agents


! Pyruvate undergoes oxidation when it loses electrons to? (Multiple Choice)
A. Oxidation in the air
B. The Krebs cycle
C. Nuclear reactions
D. Photosynthesis

C. Nuclear reactions


Pyruvate undergoes oxidation when it loses electrons to?
A) Nitrogen
B) Oxygen
C) Carbon dioxide
D) Water

C) Carbon dioxide


Pyruvate is an important molecule in the Krebs cycle, which is a vital process in the body that helps produce energy. In the Krebs cycle, pyruvate loses electrons to form oxaloacetate. This process is called oxidation. Oxidation can happen when pyruvate loses electrons to another molecule, such as oxygen.

Which of the following best explains why pyruvate undergoes oxidation when it loses electrons to oxygen?

A) Pyruvate is unstable and prone to oxidation.
B) Oxaloacetate is a byproduct of oxidative metabolism and is harmful to cells.
C) Oxidation helps produce energy in the Krebs cycle.
D) The electron loss results in the formation of water.

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-Sulfur can be oxidized to produce sulfur dioxide and water.
-The first step in this process is the oxidation of sulfur dioxide to sulfate.
-Sulfate can then be reduced to sulfide, which can react with oxygen to form sulfide oxide.
-The last step is the oxidation of sulfide oxide back to sulfur.


When copper loses electrons to other elements, it undergoes oxidation. The different forms of oxidation depend on how many electrons were lost.

1) Redox reaction: This is the most common form of oxidation, and it occurs when copper loses two electrons. In this reaction, copper forms a metal oxide (CuO) with oxygen.

2) Hydrogen-oxygen bond cleavage: This type of oxidation happens when copper loses one electron. In this process, copper breaks the hydrogen-oxygen bond, and water vapor is released.

3) Peroxide formation: When copper loses two electrons, peroxide formation can happen. In this process, copper forms a metal oxide (CuO) with oxygen and water vapor. Peroxide is a powerful oxidizing agent, and it can damage tissues if it’s left unchecked.

4) Deposition: Copper can also form compounds with other elements in this process, which results in deposition. This type of oxidation doesn’t release any gases or water vapor, but it does create new materials.

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Which of the following is an electron donor?

A. Nitrogen
B. Sulfur
C. Oxygen
D. Chlorine

A. Nitrogen


Manganese is a metal that has several important roles in the body. Manganese is essential for the production of energy in the body, and it helps to create proteins and DNA. Manganese also plays a role in antioxidant activity.

Manganese can be lost from the body through several pathways, including oxidation. Oxidation occurs when molecules lose electrons, and it can lead to damage or destruction.

Oxidation can occur when Manganese loses electrons to different substances in the body. The most common source of electrons for Manganese is oxygen. When Manganese loses electrons to oxygen, it becomes manganese oxide. This process can happen in different parts of the body, including the heart, lungs, and muscles.

Oxidation can also occur when Manganese loses electrons to other molecules in the body. This process is called redox reactions, and it happens in different tissues throughout the body. Redox reactions play an important role in how the body uses energy, and they can help with many processes in the body.



1. What is the first step in the oxidation of pyruvate?
2. What is a byproduct of the oxidation of pyruvate?
3. How does the oxidation of pyruvate contribute to the production of energy in cells?
4. Why are cells able to use pyruvate to produce energy?

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-What is the oxidation state of titanium?
-What is the electron affinity of titanium?
-What is the oxidation number of titanium?

The oxidation state of titanium is +4. The electron affinity of titanium is 5.6 eV. The oxidation number of titanium is 14.


When pyruvate undergoes oxidation it loses electrons, leading to the production of carbon dioxide and water. The process of oxidation can be catalyzed by either oxygen or metal ions. Oxidation can occur in aerobic or anaerobic environments, depending on the presence of oxygen. In anaerobic environments, such as the digestive system, oxidation is catalyzed by an enzyme called lactic acid bacteria.

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