The final step of the citric acid cycle oxidizes malate to back to oxaloacetate and reduces NAD+. What is the purpose of this step?

Explanation: Malate regenerates oxaloacetate by action of NAD+-dependent malate dehydrogenase, completing the cycle. Coenzymes including FAD and NAD+ are reduced in the Krebs cycle, which transfers electrons by the electron transport chain with oxygen as the final acceptor.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

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