I just need #6 & 7 6. In eukaryotes, pyruvate is converted to acetyl CoA (A) in

Question

I just need #6 & 7 6. In eukaryotes, pyruvate is converted to acetyl CoA (A) in the cytoplasm. (B) when passing through the mitochondrial outer membrane. (C) in the mitochondrial intermembrane space. (D) when passing the mitochondrial cristae. (E) in the mitochondrial matrix. 7. The levels of ATP in a muscle cell are high. How is glucose metabolism affected? (A) Glycolysis is activated/ gluconeogenesis is inhibited. (B) Glycolysis is inhibited/ gluconeogenesis is activated. (C) Glycolysis and gluconeogenesis are inhibited. (D) Glycolysis and gluconeogenesis are activated. (E) None of the above 8. A cell needs NADPH only. How does it acquire it? (A) glycolytic intermediates oxidative portion of the pentose phosphate pathway oxidative portion of the pentose phosphate pathway plus recycling thro

Explanation / Answer

6. The answer is : in the mitochondrial matrix.

Before entering the citric acid cycle the pyruvate is converted into acetyl CoA in the matrix of mitochondria that reaction is called as transition reaction.

7. The answer is : Glycolysis is inhibited / gluconeogenesis is activated .

If excess amount of ATP is available the glycolysis should be turned off and and the excess ATP is used to synthesize glucose molecules.  

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