AP BIOLOGY

CELL RESPIRATION

GLYCOLYSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are two of the products of glycolysis?
A
2 pyruvate and 4 net ATP
B
2 triose phosphate and 2 net ATP
C
2 NADH and 4 net ATP
D
2 NADH and 2 net ATP
Explanation: 

Detailed explanation-1: -1: Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate molecules: Glycolysis, or the aerobic catabolic breakdown of glucose, produces energy in the form of ATP, NADH, and pyruvate, which itself enters the citric acid cycle to produce more energy.

Detailed explanation-2: -During glycolysis, glucose ultimately breaks down into pyruvate and energy; a total of 2 ATP is derived in the process (Glucose + 2 NAD+ + 2 ADP + 2 Pi–> 2 Pyruvate + 2 NADH + 2 H+ + 2 ATP + 2 H2O). The hydroxyl groups allow for phosphorylation. The specific form of glucose used in glycolysis is glucose 6-phosphate.

Detailed explanation-3: -Glycolysis: It is the process of breaking down glucose to create energy. Glycolysis generates 2 ATP and 2 NADH, for a total of 8 ATP molecules.

Detailed explanation-4: -The net products of (glycolysis) are 2 ATP, 2 NADH, and 2 pyruvic acid molecules. The Krebs cycle releases energy in the form of (ATP). (NADH and FADH2) carry electrons from the Krebs cycle to the electron transport chain.

Detailed explanation-5: -Glycolysis has a net gain of 2 ATP molecules and 2 NADH. Some cells (e.g., mature mammalian red blood cells) cannot undergo aerobic respiration, so glycolysis is their only source of ATP. However, most cells undergo pyruvate oxidation and continue to the other pathways of cellular respiration.

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