Add your answer and earn points. The G3P is later transformed into a pyruvate molecule. This multistep process yields two ATP molecules containing free energy, two pyruvate molecules, two high energy, electron-carrying molecules of NADH, and two molecules … The first phase is the energy-consuming phase, so it requires two ATP molecules to start the reaction for each molecule of glucose.However, the end of the reaction produces four ATPs, resulting in a net gain of two ATP energy molecules. Correct answers: 1 question: At which stage is glucose broken into smaller molecules? glycolysis can be broken down into three stages. Glycolysis. Glycolysis is a vital stage in respiration, as it is the first stage glucose is modified to produce compounds which can go on to be used in the later stages, in addition to generating ATP which can be directly used by the cell. The energy released in this reaction is used to combine ADP and P to form ATP In the absence of oxygen the pyruvic acid produced at the end of stage 1 is converted to lactic acid in muscle cells or to ethanol and CO 2 in yeast cells. Digestion is helped by enzymes, which are biological catalysts. converts glucose into two molecules of pyruvate (a three-carbon compound with three carbon atoms) with the corresponding production of adenosine triphosphate (ATP). This occurs in several steps, as summarized in the following diagram. Each PYRUVATE molecule contains three carbon atoms As glucose is a stable molecule it must first be made into a less stable FRUCTOSE BISPHOSPHATE molecule before it can be broken … Stage one of cellular respiration is glycolysis. Stage one of cellular respiration is glycolysis. The first stage of cellular respiration occurs in the A. matrix B. cytosol C. cristae D. mitochondria Oxygen is not involved, and only a small amount of energy is released at the time. The reactions of aerobic respiration can be broken down into four stages, described below. The first stage of cellular respiration is glycolysis, which happens in the cytosol of the cytoplasm. While the breakdown of glucose to produce ATP (chemical energy) in cellular metabolism is continuous process, it's generally divided into three main stages that include: 1/ Glycolysis Generally, glycolysis may be described as the oxidation of a glucose (a hexose with six carbons) molecule to produce two molecules of pyruvate (each pyruvate molecule consists of three … At which stage is glucose broken into smaller molecules 1 See answer vineetsharma562 is waiting for your help. In stage one, glucose is broken down in the cytoplasm of the cell in a process called glycolysis. Although glycolysis releases energy, the cell needs a small Lipid metabolism begins in the intestine where ingested triglycerides are broken down into smaller chain fatty acids and subsequently into monoglyceride molecules (see [link] b ) by pancreatic lipases , enzymes that break down fats … A glucose molecule is broken down into two pyruvic acid molecules in A. Glycolysis.. Cellular respiration is the process of extracting energy in the form of ATP from the glucose in the food you eat. Glycolysis is the splitting, or lysis of glucose. Glycolysis consists of ten steps divided into two distinct halves. Lipid metabolism is associated with carbohydrate metabolism, as products of glucose (such as acetyl CoA) can be converted into lipids. Enzymes split a molecule of glucose into two molecules of pyruvate (also known as pyruvic acid). Like photosynthesis, a two-stage process 1: Glucose is broken down into smaller molecules Occurs in the cytoplasm Only a small amount of energy is released here 2: The smaller molecules are broken down even more Occurs in the mitochondria: the cell “powerhouse” Chemical reaction that requires oxygen cellular respiration. During this stage, the six-carbon glucose is broken down into 2 molecules of three-carbon pyruvate. Glycolysis converts the 6-carbon glucose into two 3-carbon pyruvate molecules. The first stage of aerobic respiration is glycolysis, which takes place in the cytoplasm.Glycolysis converts glucose, a six-carbon molecule, into two smaller three-carbon molecules called pyruvate.This stage doesn’t require oxygen so it is an anaerobic process and is involved in both aerobic and anaerobic respiration pathways. Sign in Register; Hide. Stage 1: The first stage takes place in the cytoplasm of the organisms cells. In stage 2 a chain of reactions called glycolysis converts each molecule of glucose into two smaller molecules of pyruvate. These 3 carbon molecules are A. pyruvate B. NADPH C. ATP D. FADH 2 Question 4 Cellular respiration occurs in 3 locations. Coolkrish333 Coolkrish333 Glycolysis is the state where glucose breaks down into smaller molecules. Glycolysis converts the 6-carbon glucose into two 3-carbon pyruvate molecules. The first stage • A glucose molecule is broken down into pyruvic acid molecules with a net gain of two ATP molecules. The pyruvate can be used without oxygen in the process of fermentation, but no further ATP is produced during this process. New questions in Science. In stage II of catabolism, the metabolic pathway known as glycolysis converts glucose into two molecules of pyruvate (a three-carbon compound with three carbon atoms) with the corresponding production of adenosine triphosphate (ATP). Splitting Glucose. The individual reactions in glycolysis were determined during the first part of the 20th century. Glycolysis. Glycolysis. the first stage involves trapping and destabilizing the glucose, the second stage involves breaking down the. This process creates two ATP molecules. In stage two, the pyruvate molecules are transported into the mitochondria. These intermediates include a glucose 6-phosphate molecule and a glyceraldehyde-3-phosphate (G3P). This process occurs in the cytoplasm of the cell, and it occurs in the presence or absence of oxygen. During glycolysis a small amount of NADH is made as are four ATP. Stage 3 of the oxidative breakdown of food molecules takes place entirely in mitochondria. The first half of the glycolysis is also known as the energy-requiring steps.This pathway traps the glucose molecule in the cell and uses energy to modify it so that the six-carbon sugar molecule can be split evenly into the two three-carbon molecules.