Question

Consider aerobic cellular metabolism from the beginning to end. What is the sequential order of the metabolic processes that starts with glucose and results in the production of carbon dioxide, water, and ATP?

Answer 1

Aerobic cellular metabolism involves four main processes: glycolysis, transformation of pyruvate, Krebs Cycle, and oxidative phosphorylation, resulting in the production of carbon dioxide, water, and ATP from glucose and oxygen.

Step-by-step explanation:

The Sequence of Aerobic Cellular Metabolism

The sequential order of the metabolic processes that starts with glucose and results in the production of carbon dioxide, water, and ATP in aerobic cellular metabolism is as follows:

1. Glycolysis: A glucose molecule is broken down into two three-carbon molecules of pyruvate. This step occurs in the cytoplasm.
2. Transformation of Pyruvate: Pyruvate is oxidized to form Acetyl Coenzyme A (Acetyl CoA). This process also takes place in the cytoplasm.
3. Krebs Cycle (also known as Citric Acid Cycle or TCA cycle): Acetyl CoA enters the mitochondrial matrix, where it is fully oxidized into carbon dioxide. This cycle completes the breakdown of the carbon atoms originally present in glucose.
4. Oxidative Phosphorylation: In the inner membrane of the mitochondrion, electrons removed during previous stages pass through the electron transport chain and ultimately reduce oxygen. The energy released during electron transport is used to create a proton gradient, which drives the production of ATP from ADP.

Overall, during the process of aerobic cellular respiration, glucose and oxygen are consumed while carbon dioxide, water, and ATP are produced.

Answer 2

Step-by-step explanation:

This starts with substrate level phosphorylation(glycolysis) in the cytosol of cytoplasms.Two ATPs are needed for phosphorylation of glucose.With eventual formation of 4 ATPs with 2NET GAIN ATPs,NADH+,and Pyruvate.

The Pyruvate reacts with co-enzyme A to form Acetyl coA-This is the bridge reaction or link reaction.

The Acetyl Co-A diffuses into the mitochondria where it combines with oxaloacetate to form citrate,the latter form Alpha ketoglutaric succinic,fumate,malate and back to oxaloacetate.The cycle of events is called the Kreb's Cycle.

Net of 2ATPs are formed,co-enzymes NADH+ and FADH2 ,water molecules,and Co2 are produced.These takes place in the mitochondria.

Then the NADH+ and FADH2 takes the hydrogen ions into the inner mitochondria where Hydrogen is split into electron and Protons.This forms the beginning of oxidative phosphorylation.

The electrons are transmitted by the carrier proteins to form the electron transport chains,which provide the PMF. The latter pumps the protons across the walls of mitochondria into the intramembrane space.

The high concentration of the protons produce the elecrochemical gradients which make the protons to diffuse back into the matrix. it is the changes in the elctrochemical gradients that supply the energy needed by ATPase enzymes for synthesis of ATPs. A total of 28ATPs are produced in oxidative phosphorylation.

Answer:

The total ATPs produced in the sequence of glycolysis pyruvatre,Co-enzyme A, kreb's Cycle and oxidative phosphorylation are 32ATPs per molecule of glucose splits in Glycolysis.