What happens during the krebs cycle?
atp and nadh from food are converted to co2 and o2.
nadh from glycolysis is converted to atp and o2 molecules.
glucose is broken down in a cycle of reactions to form pyruvate.
pyruvate is broken down in a series of reactions to form co2.

The correct answer is b.

Explanation:

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The Krebs cycle is a process that occurs in the matrix of the mitochondria. It is a metabolic process, cellular respiration.

The reducing agent, the NADH from glycolysis is converted into ATP and O2.

The correct answer is b.

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

correct answer is a. and d.