2 ATP molecules are invested during glycolysis per each glucose molecule that is being metabolized. The first ATP molecule intervenes in the very first step, that is: from glucose to glucose 6-phosphate, catalyzed by a hexokinase, releasing an ADP molecule. The second ATP molecule is used in the third step: from fructose 6 phosphate to fructose 1,6-bisphosphate, catalyzed by a phosphofructokinase, and releasing also an ADP molecule.
Glycolysis results in a net gain of 2 ATP. Aerobic respiration results in 36 - 38 ATP.
Nadh and ATP
NADH and ATP
It provides energy (ATP).
The process of glycolysis converts 2 ATP molecules and 1 Glucose molecule into 2 Pyruvate molecules (or pyruvic acid, a 3 carbon molecule) and 4 ATP molecules. The net gain of ATP is 2, since 2 ATP have already been invested in the process.
ATP is invested in glycolysis to prime the process and provide energy for the initial steps, such as phosphorylating glucose and converting it into intermediates. This investment helps to drive the overall reaction forward and ultimately produce ATP through substrate-level phosphorylation and the electron transport chain.
This is a very broad question so I will give a broad answer. In cellular respiration, ATP is required to start the glycolysis process. The beginning of glycolysis is an endergonic process that requires an input of energy in the form of ATP. For every glucose molecule invested in addition to the two ATP, you get a total of approximately 34-36 ATP in the end after glycolysis and TCA cycle.
2 ATP are needed.
The process that requires 2 ATP to be invested in cellular respiration is the glycolysis. Glycolysis is the first stage of cellular respiration and takes place in the cytoplasm of the cell. It involves breaking down glucose into two molecules of pyruvate while consuming 2 ATP molecules.
Glycolysis produces a net gain of 2 ATP molecules and 2 NADH molecules per glucose molecule. Each ATP molecule provides about 7.3 kilocalories of energy.
2 pyruvate + 2 ATP (2 ATP are invested in glycolysis to make 4 ATP; so there is a net gain of 2 ATP) + 2 NADH +2 H+
The energy carrying compound used to start glycolysis is adenosine triphosphate (ATP). One molecule of ATP is hydrolyzed to adenosine diphosphate (ADP) and inorganic phosphate (Pi) to provide the initial energy necessary to kickstart the glycolytic pathway.
Glycolysis results in a net gain of 2 ATP. Aerobic respiration results in 36 - 38 ATP.
Nadh and ATP
Even though glycolysis is an energy-releasing process, the cell needs to put in a little energy to get things going. At the pathway's beginning, 2 molecules of ATP are used up.Although the cell puts 2 ATP molecules into its account to get glycolysis going, when glycolysis is complete, 4 ATP molecules have been produced. This gives the cell a net gain of 2 ATP molecules. The product of glycolysis is two pyruvate molecules which can then be broken down further for greater net energy gain. In animal cells, in the presence of oxygen, as much as 32 additional ATP can be generated
To energize glucose molecules at the start of a process, ATP (adenosine triphosphate) is invested. This ATP is used to phosphorylate the glucose molecule, providing the initial energy needed to start the process of glycolysis or aerobic respiration.
NADH and ATP