Table of Contents
What molecules can enter glycolysis?
Glycolysis: Sugars, glycerol from fats, and some types of amino acids can enter cellular respiration during glycolysis. Pyruvate oxidation: Some types of amino acids can enter as pyruvate.
What goes in pyruvate processing?
2. Pyruvate processing Each pyruvate is processed to release one molecule of CO2, and the remaining two carbons are used to form the compound acetyl CoA. The oxidation of pyruvate results in more NAD+ being reduced to NADH. Figure 9.1 Glucose Is the Hub of Energy Processing in Cells.
What goes into the Kreb cycle?
Fuel for the Krebs cycle comes from lipids (fats) and carbohydrates, which both produce the molecule acetyl coenzyme-A (acetyl-CoA). This acetyl-CoA reacts in the first step of the eight step sequence of reactions that comprise the Krebs cycle, all of which occur inside mitochondria of eukaryotic cells.
What molecule enters the citric acid cycle?
acetyl CoA
Similarly, proteins can be broken down into their basic parts to form acetyl CoA, the molecule that enters the citric acid cycle. Components of many fats can be transformed into acetyl CoA, or converted to glucose so they can enter the citric acid cycle as well.
What molecule is the final electron acceptor at the end of the electron transport chain?
Oxygen
Explanation: Oxygen is the final electron acceptor in the electron transport chain, showing the need for aerobic conditions to undergo such a process.
What is the molecule that enters the citric acid cycle quizlet?
The citric acid cycle generates 3 molecules of NADH, 1 molecule of FADH2, and 1 molecule of GTP(ATP) per acetyl-sCoA that enters the cycle.
What goes into the process of glycolysis?
Glycolysis is the process by which one molecule of glucose is converted into two molecules of pyruvate, two hydrogen ions and two molecules of water. Through this process, the ‘high energy’ intermediate molecules of ATP and NADH are synthesised.
What molecules enter the electron transport chain?
NADH and FADH2 are molecules that carry electrons. They bring electrons to the electron transport chain, a series of proteins embedded inside mitochondria. The folds in this inner membrane are called the cristae.
What is the starting molecule for glycosis?
Glycolysis First Half of Glycolysis (Energy-Requiring Steps) The first half of glycolysis uses two ATP molecules in the phosphorylation of glucose, which is then split into two three-carbon molecules. Second Half of Glycolysis (Energy-Releasing Steps) So far, glycolysis has cost the cell two ATP molecules and produced two small, three-carbon sugar molecules. Outcomes of Glycolysis. Glycolysis starts with glucose and ends with two pyruvate molecules, a total of four ATP molecules and two molecules of NADH.
What do molecule move into the Krebs cycle?
The Krebs Cycle, also called the citric acid cycle, is the second major step in oxidative phosphorylation . After glycolysis breaks glucose into smaller 3-carbon molecules, the Krebs cycle transfers the energy from these molecules to electron carriers, which will be used in the electron transport chain to produce ATP.
What molecule produces acetyl-CoA?
Acetyl-CoA is the reactant needed in the citric acid cycle. It is produced by the oxidation of pyruvate which is the end product of glycolysis. During the first step of cellular respiration, glycolysis, a 6-carbon glucose molecule is split into two 3-carbon molecules called pyruvate. These pyruvate molecules must by oxidized and converted to acetyl-CoA, which will subsequently move into the citric acid cycle, for the energy stored in them to be extracted.