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Unformatted text preview: . What are the end products and in what metabolic pathway(s) are they commonly found? 5. The glucose–alanine cycle is reminiscent of the Cori cycle, but the glucose–alanine cycle can be said to be more energy efficient. Explain why this is so. 6. Differentiate between ketogenic amino acids and glucogenic amino acids. 7. Why are certain amino acids defined as essential for human beings? 8. What cofactor is required by all transaminases (aminotransferases)? 9. Which of the 20 amino acids can be synthesized directly from a common metabolic intermediate by a transamination reaction?...
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