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A-Level Biology Question and Answers 2020/2021

A-Level Biology Question and Answers 2020/2021 . All copyright and publishing rights are owned by S-cool. First created in 2000 and updated in 2013, 2015 & 2020. Table of Contents Topics that only contain interactive questions .. 3. biological molecules and Enzymes (Questions) .. 4. biological molecules and Enzymes ( Answers ) .. 6. Cells and Organelles (Questions) .. 8. Cells and Organelles ( Answers ) .. 10. Classification (Questions) .. 13. Classification ( Answers ) .. 14. DNA and the Genetic Code (Questions) .. 16. DNA and the Genetic Code ( Answers ) .. 18. Ecological Concepts (Questions) .. 21. Ecological Concepts ( Answers ).. 24. Evolution (Questions) .. 26. Evolution ( Answers ) .. 28. Gas Exchange (Questions) *.

Biological Molecules and Enzymes (Answers) Answer outline and marking scheme for question: 1 Give yourself marks for mentioning any of the points below: a) (i) Amino acid. (ii) Possession of CH 3 group/different R group. (2 marks) b) (i) Glycogen consists of glucose/one type of monomer. Many different amino acids combine to form proteins.

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