Compounds that are not involved in redox reactions in respiration

B, obviously, B is in photosynthesis.

h+ +2e- = nadh

NAD+ is an oxidation state.

NADH is in a reduced state.

Nad+ and Nadh are both coenzymes, the main role is to transfer electrons in the photosynthesis photolysis process is reduced to NadP+ in the photosynthesis photolysis process, and then act as a reducing agent in the dark reaction, NadP+ and ADP are reduced to Nadph and ATP in the light reaction, and then enter the dark reaction (Calvin cycle), and then are oxidized to ADP and NadP+ in the dark reaction, and re-enter the photoreaction C. Acetyl Coa + Oxaloacetate – > citric acid + CoA-SH

d。The process of the reaction:

Not only can the redox reaction be without oxygen, but even combustion can be done without oxygen!

d bar. c definitely to exclude.

Aren't A and B mutually transformative? Exclusion. d

From the point of view of chemical reactions, respiratory metabolism belongs to oxidative reactions.

Aerobic respiration is divided into three phases: the first stage occurs in the cytoplasmic matrix, where glucose is broken down into pyruvate and reducing hydrogen, and a small amount of energy is released; In the second stage, pyruvate reacts with water to generate carbon dioxide and reducing hydrogen, and releases a small amount of energy; The third stage occurs on the inner membrane of the chondrium, where the first two stages of reducing hydrogen and oxygen react to produce water and release a large amount of energy.

Anaerobic respiration is divided into two phases: the first stage is the same as the first stage of aerobic respiration; The second stage occurs in the cytoplasmic matrix, where pyruvate reacts to produce lactic acid or carbon dioxide and alcohol.

From the perspective of chemical reactions, respiratory metabolism belongs to redox reactions because there is a change in valency.

The difference between aerobic respiration and anaerobic respiration is mainly in the following aspects:

First, the respiratory sites are different, anaerobic respiration is all cytoplasmic matrix, and aerobic respiration is cytoplasmic matrix and mitochondria.

The second is that the energy is different for different respiration products.

Hope it helps!

From the perspective of chemical reactions, respiratory metabolism belongs to redox chemical reactions.

The differences between aerobic and anaerobic respiration are:

2. Oxygen is required for aerobic respiration, and oxygen is not required for anaerobic respiration.

3 products are different, aerobic respiration products: CO2 + H2O + ATP anaerobic respiration products: CO2 + H2O + alcohol or CO2 + lactic acid.

Wrong! Many chemical reactions do not involve oxygen. For example:

Cu+Cl2==CuCl2 (lit above the equal sign) Cl2+PCL3==PCL5

As long as it is a reaction in which two or more substances produce another substance, it is called a chemical reaction. The chemical reaction is a redox reaction.

I don't know if you are in the third year of junior high school or high school, have you ever learned this concept? The redox reaction does not necessarily involve oxygen, as long as there is electron gain and loss, or valency change, it belongs to the redox reaction.

Also, I see you in another question, asking the question "Why do you say that water contains hydrogen molecules and oxygen molecules, but not hydrogen atoms and oxygen atoms?" This statement is not true.

There are two ways to say the correct way to describe water:

1. Water is composed of hydrogen and oxygen;

2. A water molecule is composed of two hydrogen atoms and one oxygen atom.

It is only required that there is more than one reaction product, and as long as the oxidized is not elemental, most of them meet the requirements.

Combustion of organic substances such as methane, ethane, ethanol, etc., to produce carbon dioxide and water as well, for example.

Hydrogen sulfide is generated by combustion.

so2+h2o

In this way, as long as the valency does not change, even if the aerobic elements participate, it is not a redox reaction. The valency changes, and even if there is no oxygen involved, it is a redox reaction. For example:

H so 2NaOH = Na so 2H O, there are aerobic elements in this reaction, but the valency of each element does not change, so it is not a redox reaction.

Fe 2FeCl = 3FeCl , there is no oxygen in this reaction, but after the reaction of 0 valence and 3 valent iron, they all become 2 valent iron, and its valency changes, so it is a redox reaction.

Therefore, the redox reaction is judged not to see whether there is oxygen involved, but to see whether there is a change in the valency of the elements. Don't limit yourself to the literal anymore.

No, for example, 3 o2 = 2 o3 There are many metathesis reactions that have oxygen in them, but they are not redox reactions, so the redox reaction should be judged by whether the valency changes.

No, redox refers to the gain and loss of electrons that cause valence, not aerobic elements, such as an ordinary metathesis reaction, which contains oxygen but is not redox.

No, redox is a reaction with valence rise and fall anyway. Like zinc to hydrogen.

Right. For example, the conversion of oxygen and ozone.

Sentence 1: The reaction of a substance with oxygen or rebirth.

The oxygen above does not necessarily refer to oxygen, as in:

Reaction of Mg with oxygen in CO2: 2mg + CO2 = (ignition) 2MGO+C reaction with O3.

The first two sentences of lead are the reaction with "oxygen" in the oxidation reaction.

The oxidation reaction may not be able to participate in O2, such as the reaction of Fe oxidized by Luhao Cl2: 2Fe + 3Cl2 = (ignition) 2FeCl3

It can be free oxygen --- oxygen.

Gas calendar split: 2H2 + O2 = 2H2O

It can also be an oxygen--- copper oxide in the virtual and rotten grip compound: H2+CuO=H2O+Cu

In fact, anaerobic respiration.

Aerobic respiration is the main way in which organisms gain energy, and aerobic and anaerobic respiration are produced at the same time.

Raw metabolites are also necessary forgiveness for organisms to carry out the synthesis of substances. In a narrow sense, anaerobic respiration is really not needed.

To oxygen, but from the point of view of the entire metabolic process of energy, especially the respiratory chain.

Look up, anaerobic respiration with.

The energy generated by aerobic respiration is converted into energy units ATP by the participation of oxygen, so it cannot be said that there is none.

Oxygen respiration does not require oxygen sedan swimming. Of course, the metabolic process of anaerobic respiration has a dehydrogenation process, so it also belongs to oxidation. Should.

Oxidation in the narrow sense is a reaction carried out by the oxidation of a substance by oxygen, but oxidation in the broad sense is a reaction in which electrons are lost (valency increases). Many other substances can also increase the valency of chemicals, such as chlorine, and oxidation reactions.

Wrong! The essence of redox reaction is: Gains, losses and transfers of electrons.

As long as there is a reaction in which the valency rises and falls, it is a redox reaction.

Then for oxidation reactions.

As long as the reactants are in the reaction formula. is on the rise. Electrons.

Then it undergoes an oxidation reaction.

The resulting product is called an oxidation product.

Oxygen is just an oxide. Oxidation reactions can occur.

But it's not just oxygen that can oxidize.

The definition of oxidation in high school is the reaction in which a substance loses electrons and its valency increases, so if you are a high school student, this question should not be asked.

The definition of oxidation reaction in junior high school is the reaction in which a substance gets oxygen. Note that this oxygen refers to the element oxygen, which means that after a substance has undergone an oxidation reaction, it has more element O. Then it's not just O2 that can provide the O element, so this sentence is also wrong.

For example, cuo+h2=cu+h2o, does h2 get the o element to become h2o?Is that an oxidation reaction? Is there oxygen in the reaction? No.

Oxidation reaction in the narrow sense.

It is the reaction in which a substance gets oxygen. Oxidation reaction in the generalized sense is the loss of electrons by a substance, ie.

Reaction to increased valency. When you have already learned about the generalized oxidation reaction, the statement in the title is wrong.

Oxidation is when a substance loses electrons and does not react with oxygen.

The process of changing from pyruvate to lactic acid and alcohol is the process by which pyruvate is reduced, so this process is the reduction of organic matter, not oxidation.

In anaerobic respiration, it also has to go through the same first half of the stage as aerobic respiration, which is called glycolysis, which is the process of turning glucose into pyruvate, in this process, glucose (specifically glyceraldehyde-3-phosphate, the decomposition product of glucose) undergoes dehydrooxidation (dehydrogenation of organic matter, which is also a kind of oxidation), and NADH (and 1,3-bisphosphoglyceric acid) is generated, and the acceptor of hydrogen in this process is NAD+, so NAD+ is reduced and is an oxidant.

Alcohol produced: C6H12O6 2C2H5OH + 2CO2 + energy;

Lactic acid is produced: C6H12O6 2C3H6O3+ energy;

In the reaction, write the condition above the arrow: enzyme.