In case of repeated contraction, muscle cells regenerate NAD⁺ by converting pyruvate to _____________(a) glycogen(b) lactate(c) starch(d) celluloseI have been asked this question in an interview for internship.My question is taken from Metabolism topic in portion Bioenergetics, Enzymes, Metabolism, Genes, Chromosomes and Genomes of Cell Biology

In case of repeated contraction, muscle cells regenerate NAD⁺ by con

1.	In case of repeated contraction, muscle cells regenerate NAD⁺ by converting pyruvate to _____________(a) glycogen(b) lactate(c) starch(d) celluloseI have been asked this question in an interview for internship.My question is taken from Metabolism topic in portion Bioenergetics, Enzymes, Metabolism, Genes, Chromosomes and Genomes of Cell Biology
Answer» The CORRECT answer is (B) lactate Explanation: In case of repeated contraction, the oxygen levels DROP down and MAKE it difficult to keep up with the cell’s metabolic demands. Under these conditions, skeletal muscle cells regenerate NAD⁺ by converting pyruvate to lactate.

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