Question
Biology Question on respiration in plants
Connecting link between glycolysis and Krebs' cycle before pyruvate entering Krebs' cycle is changed to
A
oxaloacetate
B
PEP
C
pyruvate
D
acetyl
Answer
acetyl
Explanation
Solution
The correct answer is D: Acetyl
Glycolysis is the 1st step of cellular respiration and it is a common process for aerobic and anaerobic respiration. Glycolysis occurs in absence of oxygen. The product of glycolysis is pyruvate which oxidizes into Acetyl CoA.**** The oxidized product then enters into mitochondria and takes part in the Krebs Cycle.
Important Notes on the above concepts:
- Glycolysis is the metabolic pathway in which, glucose C₆H₁₂O₆ converts into pyruvate, CH₃COCOO⁻, and a hydrogen ion, H⁺.
- The energy released in this process is used in ATP and NADH formation.
- The final process of this process is pyruvic acid.
- The Krebs cycle is a series of chemical reactions used by all aerobic organisms to release stored energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins.