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Which is capable of being reduced during either glycolysis or the Krebs cycle?
Wiki User
∙ 14y ago
NAD+ is capable of being reduced during both glycolysis and the Krebs cycle. It helps in passing energy from glucose to other pathways in the cell.
Wiki User
∙ 9y ago
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Why anareobic glycolysis is speedy than aerobic one?
Glycolysis itself anaerobic process and forms pyruvate. If there is oxygen present, pyruvate is reduced to acetyl-coenzyme A; if there is no oxygen present, pyruvate goes through fermentation, forming either lactic acid or ethanol.
What gets reduced in glycolysis?
In glycolisis six-carbon sugar glucose are oxidized into two three-carbon compounds with the production of a small amount of adenosine triphosphate (ATP). Glycolysis has two basic functions in the cell. First, it metabolizes simple six-carbon sugars to smaller three-carbon compounds that are then either fully metabolized by the mitochondria to produce carbon dioxide and a large amount of ATP or used for the synthesis of fat for storage. Second, glycolysis functions to producea small amount of ATP, which is essential for some cells solely dependent on that pathway for the generation of energy.
What stage of cellular respiration follows glycolysis in the presence of oxygen?
If there is no oxygen present, then the cell does either alcohol or lactic acid fermentation. If oxygen is present, the citric acid cycle follows glycolysis, with oxidative phosphorylation following the citric acid cycle.
What is the significance of metabolic cell processes?
The metabolic cell processes create energy for the cell either aerobically (through glycolysis, pyruvate oxidation, Krebs cycle, and Electron Transport Chain) or anaerobically(through glycolysis and fermetation). Aerobic respiration is much more effective.
When there is not enough oxygen for aerobic respiration what is that called?
During times of insufficient oxygen, the cell undergoes glycolysis, where 2 existing molecules of ATP can form 4 molecules and pyruvic acid. This is an insignificant amount compared to 38 molecules of ATP made by the cellular respiration, which is why it is important to always have enough oxygen.
What is glycolysis about?
Glycolysis is the breakdown of glucose. It can either be aerobic or anaerobic.
Why anareobic glycolysis is speedy than aerobic one?
Glycolysis itself anaerobic process and forms pyruvate. If there is oxygen present, pyruvate is reduced to acetyl-coenzyme A; if there is no oxygen present, pyruvate goes through fermentation, forming either lactic acid or ethanol.
What gets reduced in glycolysis?
In glycolisis six-carbon sugar glucose are oxidized into two three-carbon compounds with the production of a small amount of adenosine triphosphate (ATP). Glycolysis has two basic functions in the cell. First, it metabolizes simple six-carbon sugars to smaller three-carbon compounds that are then either fully metabolized by the mitochondria to produce carbon dioxide and a large amount of ATP or used for the synthesis of fat for storage. Second, glycolysis functions to producea small amount of ATP, which is essential for some cells solely dependent on that pathway for the generation of energy.
What two processes in glucose breakdown are anaerobic?
During glucose breakdown, glycolysis and fermentation occur anaerobically. Glycolysis breaks a glucose molecule into energy and pyruvate. Fermentation uses to the pyruvate to form either ethanol or lactate.
How much molecular oxygen is required in the fermentation of one molecule of glucose?
There is a gross of four ATP produced during glycolysis, and two are used, which leaves a net gain of two. Therefore, two ATP are used in glycolysis.
How many ATP are made by glycolysis and respiration combined?
The combined sum of ATP made by glycolysis and cellular respiration is either 38 or 36, but usually 38.
During glycolysis NAD is converted to what?
This is the Glycolysis pathway Glycolysis (the breakdown of glucose to pyruvate and lactate, occurs in the cell cytoplasm): Glucose + 2 ATP + 4 ADP + 2 NAD -> 2 Pyruvate + 2 ADP + 4 ATP + 2 NADH + energy. Oxidation of glucose is known as glycolysis. Glucose is oxidized to either lactate or pyruvate. Under aerobic conditions, the dominant product in most tissues is pyruvate and the pathway is known as aerobic glycolysis. When oxygen is depleted, as for instance during prolonged vigorous exercise, the dominant glycolytic product in many tissues is lactate and the process is known as anaerobic glycolysis. "These studies demonstrate that orderly glycolysis in the erythrocyte is regulated by the NAD-to-NADH ratio and also provide a method that makes possible the in vitro study of erythrocyte glycolysis." The conversion of pyruvate to lactate, under anaerobic conditions, provides the cell with a mechanism for the oxidation of NADH (produced during the G3PDH reaction) to NAD which occurs during the LDH catalyzed reaction. This reduction is required since NAD is a necessary substrate for G3PDH, without which glycolysis will cease. Normally, during aerobic glycolysis the electrons of cytoplasmic NADH are transferred to mitochondrial carriers of the oxidative phosphorylation pathway generating a continuous pool of cytoplasmic NAD NADH
What stage of cellular respiration follows glycolysis in the presence of oxygen?
If there is no oxygen present, then the cell does either alcohol or lactic acid fermentation. If oxygen is present, the citric acid cycle follows glycolysis, with oxidative phosphorylation following the citric acid cycle.
What are the possible events that could happen after glycolysis?
It either undergoes Anaerobic or Aerobic Cellular Respiration.
In the transitional step between glycolysis and the Krebs cycle?
The product from glycolysis, a 3 carbonn pyruvate, has Coenzyme A and an NAD+ added to it with the help of an enzyme called pyruvate dehydrogenase complex and the products are a 2 carbon Acetyl Coenzyme A, CO2, NADH + H+.
Why gluconeogenesis cannot be considered a reversal of glycolysis even though both pathways share reversible reactions?
In glycolysis you get pyruvate (or lactate) as a end product but in gluconeogenesis you get glucose formed from either Fat or Proteins. There are many intermediate steps before pyruvate is formed from Proteins and Fats. So gluconeogenesis cannot be considered as reversal of glycolysis.
True or false either cellular respiration or fementation can be used to release energy depending on the presence of carbohydrates?
true, but you need glycolysis before.
