Table of Contents
- 1 What is glucose broken down to in the first stage of respiration?
- 2 What does glucose break down to?
- 3 Where is glucose first broken down?
- 4 When oxygen is used to break down glucose it is called?
- 5 What are the 3 major steps in the breakdown of glucose?
- 6 What are the steps of glycolysis in order?
- 7 How is glucose broken down in the first stage of cellular respiration?
- 8 What happens to the glucose ring in glycolysis?
- 9 Which is the result of the second step of glycolysis?
What is glucose broken down to in the first stage of respiration?
The first stage of cellular respiration, called glycolysis , takes place in the cytoplasm. In this step, enzymes split a molecule of glucose into two molecules of pyruvate, which releases energy that is transferred to ATP.
What does glucose break down to?
During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi –> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation. The specific form of glucose used in glycolysis is glucose 6-phosphate.
What happens to glucose in the first step of glycolysis?
In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation is the process of adding a phosphate group to a molecule derived from ATP. The reaction occurs with the help of the enzyme hexokinase, an enzyme that catalyzes the phosphorylation of many six-membered glucose-like ring structures.
Where is glucose first broken down?
Glycolysis is the first pathway in cellular respiration. This pathway is anaerobic and takes place in the cytoplasm of the cell. This pathway breaks down 1 glucose molecule and produces 2 pyruvate molecules. There are two halves of glycolysis, with five steps in each half.
When oxygen is used to break down glucose it is called?
Respiration using oxygen to break down food molecules is called aerobic respiration . Aerobic respiration breaks down glucose and combines the broken down products with oxygen, making water and carbon dioxide. The carbon dioxide is a waste product of aerobic respiration because cells do not need it.
What is the last stage of glucose metabolism?
The stages that occur in the mitochondrion are known as cellular respiration. The last step (the electron transport system) require the presence of oxygen.
What are the 3 major steps in the breakdown of glucose?
Glycolysis can take place without oxygen in a process called fermentation. The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation—require oxygen in order to occur.
What are the steps of glycolysis in order?
Glycolysis Explained in 10 Easy Steps
- Step 1: Hexokinase.
- Step 2: Phosphoglucose Isomerase.
- Step 3: Phosphofructokinase.
- Step 4: Aldolase.
- Step 5: Triosephosphate isomerase.
- Step 6: Glyceraldehyde-3-phosphate Dehydrogenase.
- Step 7: Phosphoglycerate Kinase.
- Step 8: Phosphoglycerate Mutase.
What are the steps involved in glycolysis?
The glycolytic pathway can be divided into three stages: (1) glucose is trapped and destabilized; (2) two interconvertible three-carbon molecules are generated by cleavage of six-carbon fructose; and (3) ATP is generated.
How is glucose broken down in the first stage of cellular respiration?
The Process of Cellular Respiration. In stage one, glucose is broken down in the cytoplasm of the cell in a process called glycolysis. In stage two, the pyruvate molecules are transported into the mitochondria. Click to see full answer. Correspondingly, what is the first step in the breakdown of glucose?
What happens to the glucose ring in glycolysis?
In the first step of glycolysis, the glucose ring is phosphorylated. Phosphorylation is the process of adding a phosphate group to a molecule derived from ATP.
Where does glucose come from in the cell?
Glucose is a six- memebered ring molecule found in the blood and is usually a result of the breakdown of carbohydrates into sugars. It enters cells through specific transporter proteins that move it from outside the cell into the cell’s cytosol.
Which is the result of the second step of glycolysis?
The result of this phosphorylation is a molecule called glucose-6-phosphate (G6P), thusly called because the 6′ carbon of the glucose acquires the phosphate group. The second step of glycolysis involves the conversion of glucose-6-phosphate to fructose-6-phosphate (F6P).