Q:

Where does glycolysis occur?

A:

Glycolysis occurs in the cytosol, also known as intracellular fluid or cytoplasmic matrix, which is the liquid found in cells. The cytosol is separated by membranes into lots of compartments and is made of many different substances dissolved into water.

Glycolysis plays a part in cellular respiration and is a series of reactions. It makes up the first part of carbohydrate catabolism, which breaks down larger molecules into smaller ones. Why glycolysis, the larger molecules of glucose are broken down into pyruvate by using molecules of adenosine triphosphate. These ATP then become ADP. Firstly, glucose is energized by adding a high-energy phosphate from ATP which forms glucose-6-phosphate. The molecules are rearranged to become fructose-6-phosphate and a second ATP molecule is used to add a second phosphate atom, creating fructose-1,6-biphosphate. This molecule is split into a dihydrooxacetone molecule and a glyceraldehyde 3-phosphate molecule. The DHAP is rearranged into another G3P molecule, giving two G3P.

Each G3P gains a phosphorus atom and gives two electrons and a hydrogen atom to NAD+ which forms the carrier molecules, NADH. This results in the G3P molecules becoming 1,3-biphosphate glycerate. The extra phosphates are then given back to the ADP, elevating them back to ATP. The remaining phosphate on each molecule is moved to the center position, making phospho-enolpyruvate. This last phosphate is also given to ADP to make more ATP and the result is pyruvate.

Learn More

Related Questions

  • Q:

    What organelle produces ATP?

    A:

    The mitochondria inside a cell produces ATP, or adenosine triphosphate. Cellular respiration is responsible for ATP production, a process in which ATP production occurs after biochemical energy from nutrients is converted.

    Full Answer >
    Filed Under:
  • Q:

    What is the equation for cellular respiration?

    A:

    The simplified reaction for aerobic cellular respiration is: C6H12O6 (s) + 6 O2 (g) ? 6 CO2 (g) + 6 H2O (l) + energy. The process of cellular respiration uses one molecule of glucose and, in the presence of molecular oxygen, turns it into adenosine triphosphate.

    Full Answer >
    Filed Under:
  • Q:

    What is a good analogy for the functioning of the nucleolus?

    A:

    The best analogy for the nucleolus in eukaryotic cells is a factory that makes tools that are used to build other resources. The primary function of the nucleolus is to combine and construct ribosomes. The primary function of ribosomes is to build proteins necessary for the cell.

    Full Answer >
    Filed Under:
  • Q:

    What is an electron?

    A:

    An electron is a negatively charged subatomic particle that orbits around the nucleus of an atom. The negative charge of the electrons is balanced by the positive charge of the protons in the nucleus. Electrons have a much lower mass than protons.

    Full Answer >
    Filed Under:

Explore