Question

under which conditions will plant cell mitochondria actively oxidize pyruvate and carry out oxidative phosphorylation?

Answer 1

Cellular respiration has three stages: glycolysis, the Krebs cycle and oxidative phosphorylation. The Krebs cycle represents the oxidation of pyruvate.

• The plant cell mitochondria actively oxidize pyruvate and carry out oxidative phosphorylation in ALL cells, with or without light.

• Pyruvate is produced during glycolysis and then this molecule is oxidated in the mitochondrial matrix in order to produce energy (ATP).

• Oxidative phosphorylation refers to the synthesis of ATP through an electron transport chain which is coupled to the generation of an electrochemical proton gradient.

• In aerobic organisms such as plants, cellular respiration is fundamental for all their cells.

• On the other hand, light-dependent reactions and light-independent reactions are photosynthetic reactions, which occur in plant chloroplasts.

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