Where does the second stage of cellular respiration occur within the mitochondrion?

Aerobic respiration second stage occurs in in the inner compartment of the mitochondria. During the reactions, pyruvate is converted to acetyl-CoA which enters the Krebs Cycle. For two pyruvates, the two ATP and ten coenzymes form.

Where do the first and second steps of cellular respiration occur?

Lesson Summary

The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport. Glycolysis is an anaerobic process. The other two stages are aerobic processes.

What part of the cell does the second stage occur in?

mitochondrial membranes
The second stage is completed in the mitochondrial membranes. The pyruvate molecules are oxidized to carbon dioxide and 2 carbon acetyl group. Carbon dioxide molecule is released. The 2 carbon acetyl is bound with Co enzyme A and enters to mitochondrial matrix.

What is the second part of respiration?

The citric acid cycle (also known as the Krebs cycle) is the second pathway in cellular respiration, and it also takes place in the mitochondria. The rate of the cycle is controlled by ATP concentration. When there is more ATP available, the rate slows down; when there is less ATP the rate increases.

Where do the stages of cellular respiration occur?

Cellular respiration takes place in both the cytosol and mitochondria of cells. Glycolysis takes place in the cytosol, whereas pyruvate oxidation, the Krebs cycle, and oxidative phosphorylation occur in the mitochondrion.

What are the 2 stages of cellular respiration?

Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

What happens in the 2nd stage of cellular respiration?

The second step in cellular respiration is called the Krebs cycle. The Krebs cycle uses pyruvic acid to create ATP, along with additional molecules like NADH, FADH2, and CO2. The NADH and FADH2 molecules are used during the final step of cellular respiration, while the CO2 is exhaled.

How does the second stage of cellular respiration benefit a cell?

In eukaryotes, the second stage of cellular respiration takes place in the matrix of the mitochondria, which plays a major role in the production of ATP molecules within the cells. In this stage, a large amount of energy (ATP molecules) is produced after the complete oxidation of nutrients.

What are the 3 stages of cellular respiration and where do they occur?

The three main stages of cellular respiration (aerobic) would include Glycolysis in the cytoplasm, the Kreb’s Cycle in the Mitochondrial Matrix and the Electron Transport Chain in the Mitochondrial Membrane.

Where in a cell does stage 1 occur?

Stage one. Glucose in the cytoplasm of cells is broken down into two molecules of pyruvate . This releases enough energy to produce two molecules of ATP for every molecule of glucose that is broken down. The breakdown reactions that occur are catalysed by specific enzymes.

Where does cellular respiration take place in eukaryotic cells?

In eukaryotic cells, the pyruvate molecules produced at the end of glycolysis are transported into mitochondria, which are the sites of cellular respiration.

What are the 4 stages of cellular respiration and where do they occur?

The cellular respiration process includes four basic stages or steps: Glycolysis, which occurs in all organisms, prokaryotic and eukaryotic; the bridge reaction, which stets the stage for aerobic respiration; and the Krebs cycle and the electron transport chain, oxygen-dependent pathways that occur in sequence in the …

Where does the second and third stage of cellular respiration occur?

The second stage of cellular respiration, the Krebs cycle, takes place in the matrix. The third stage, electron transport, takes place on the inner membrane.

Where precisely within a cell does electron transport take place in process 2?

Where precisely, within a cell, does electron transport take place in Process 2? Inner membrane / cristae / stalked particles of mitochondria; The respiratory substrate and ADP added after 5 minutes (Q) were part of a buffered isotonic solution.

Which of the following occurs during cellular respiration?

cellular respiration, the process by which organisms combine oxygen with foodstuff molecules, diverting the chemical energy in these substances into life-sustaining activities and discarding, as waste products, carbon dioxide and water.

What are the three stages of cellular respiration quizlet?

The cellular respiration process consists of three stages: glycolysis, the Krebs cycle, and the electron transport chain. glycolysis, the six-carbon sugar molecule (glucose) breaks down into 2 three-carbon molecules (pyruvic acid).

What process occurs in the first stage of cellular respiration?

The first stage of cellular respiration is glycolysis. This process is shown in the top box in Figure 5.9. 3 showing a 6-carbon molecule being broken down into two 3-carbon pyruvate molecules. ATP is produced in this process which takes place in the cytosol of the cytoplasm.

What stages of respiration occur in the mitochondria?

In general, cellular respiration can be divided into four stages: Glycolysis, which does not require oxygen and occurs in the mitochondria of all cells, and the three stages of aerobic respiration, all of which occur in mitochondria: the bridge (or transition) reaction, the Krebs cycle and the electron transport chain …

What are the two stages of cellular respiration quizlet?

The main 2 stages are glycolysis and kreb cycle also known as citric acid cycle.In glycolysis you are using glucose as substrate and you are getting 2 molecules of pyruvic acid and 8 molecules of ATP(Adinosine Tri Phospahte-enegy molecule).

What happens in the third stage of cellular respiration?

The third and final stage of cellular respiration, called electron transport , takes place on the inner membrane of the mitochondrion. Electrons are transported from molecule to molecule down an electron-transport chain.

Where does cellular respiration and photosynthesis occur?

Photosynthesis occurs in the chloroplasts, whereas cellular respiration occurs in the mitochondria. Photosynthesis makes glucose and oxygen, which are then used as the starting products for cellular respiration.