Table of Contents
- 1 How many times does glycolysis occur per glucose molecule?
- 2 How many ATP citric acid cycle are required for each glucose molecule?
- 3 Why are three steps in glycolysis irreversible?
- 4 How many steps in glycolysis are irreversible?
- 5 How is the citric acid cycle responsible for cellular respiration?
- 6 Where does acetyl come from in the citric acid cycle?
How many times does glycolysis occur per glucose molecule?
This happens twice for each molecule of glucose since glucose is split into two three-carbon molecules, both of which will go through the final steps of the pathway.
How many times will the Kreb Cycle spin for every molecule of glucose?
Each stage in the cycle (and in the link reaction) occurs twice for every glucose molecule that enters glycolysis, because 2 pyruvate molecules are produced for each glucose.
How many ATP citric acid cycle are required for each glucose molecule?
2 ATP
Krebs cycle (or Citric acid cycle) This produces 2 ATP and 6 NADH , for every glucose molecule entering glycolysis. The Krebs cycle takes place inside the mitochondria.
How many rounds of the citric acid cycle take place for every glucose molecule oxidized?
It takes two turns of the cycle to process the equivalent of one glucose molecule. Each turn of the cycle forms three high-energy NADH molecules and one high-energy FADH2 molecule. These high-energy carriers will connect with the last portion of aerobic respiration to produce ATP molecules.
Why are three steps in glycolysis irreversible?
Some steps in glycolysis are irreversible because they are needed to control the glycolytic pathway and ensure the production of ATP.
How many steps in citric acid cycle co2 is released?
eight steps
The eight steps of the cycle are a series of redox, dehydration, hydration, and decarboxylation reactions that produce two carbon dioxide molecules, one GTP/ATP, and reduced forms of NADH and FADH2.
How many steps in glycolysis are irreversible?
3 steps
Glycolysis is a ten-step process, out of which 7 steps are reversible and 3 steps are effectively irreversible. These are 1st, 3rd and last steps catalysed by hexokinase, phosphofructokinase and pyruvate kinase, respectively.
How many steps are there in the citric acid cycle?
The citric acid cycle is a closed loop; the last part of the pathway reforms the molecule used in the first step. The cycle includes eight major steps. In the first step of the cycle, acetyl combines with a four-carbon acceptor molecule, oxaloacetate, to form a six-carbon molecule called citrate.
How is the citric acid cycle responsible for cellular respiration?
Whatever you prefer to call it, the citric cycle is a central driver of cellular respiration. It takes acetyl —produced by the oxidation of pyruvate and originally derived from glucose—as its starting material and, in a series of redox reactions, harvests much of its bond energy in the form of , , and molecules.
How is GTP similar to ATP in the citric acid cycle?
Steps of the citric acid cycle. GTP is similar to ATP: both serve as energy sources, and the two can be readily interconverted. Which of the two molecules is produced during the citric acid cycle depends on the organism and cell type. For example, ATP is made in human heart cells, but GTP is made in liver cells.
Where does acetyl come from in the citric acid cycle?
It takes acetyl —produced by the oxidation of pyruvate and originally derived from glucose—as its starting material and, in a series of redox reactions, harvests much of its bond energy in the form of,, and molecules.