Chapter 9.2 Process of Cellular Respiration-GLYCOLYSIS

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NADH Production (3 facts)

1-During glycolysis, the electron carrier NAD+ (nicotinamide adenine dinucleotide) accepts a pair of high-energy electrons and becomes NADH 2-NADH carries the high-energy electrons to the electron transport chain Where they can be used to produce more ATP. 3. 2 NADH molecules are produced for every molecule of glucose that enters glycolysis.

Glycolysis (3 facts)

1-Glycolysis is the first stage of cellular respiration. 2-During glycolysis, glucose is broken down into 2 molecules of the 3-carbon molecule pyruvic acid. -Pyruvic acid is a reactant in the Krebs cycle. 3-ATP and NADH are produced as part of the process.

The Advantages of Glycolysis (2 facts)

1-Glycolysis produces ATP very fast. Which is an advantage when the energy demands of the cell suddenly increase. 2-Glycolysis does not require oxygen So it can quickly supply energy to cells when oxygen is unavailable.

ATP Production (2 facts)

1-The cell "deposits" 2 ATP molecules into its "account" to get glycolysis going. 2-Glycolysis then produces 4 ATP molecules, -Giving the cell a net gain of 2 ATP molecules for each molecule of glucose that enters glycolysis.

Key Question: What happens during the process of glycolysis?

During glycolysis,: 1- molecule of glucose, a 6-carbon compound, is transformed into2 molecules of pyruvic acid, a 3-carbon compound.


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