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1.1 History & Scope β Test 1
Q1. Which of the following biomolecules contains only C, H and O?β Glucose
Q2. Match the molecule with its description/class:β i-2, ii-4, iii-1, iv-3
Q3. The structures of all 20 common amino acids can be represented using which set of elements?β C, N, H, O, S
Q4. Most important functional groups on biological molecules:β Contain oxygen and/or nitrogen and are polar
Q5. Upon complete hydrolysis, which of the following yields only ONE type of monomer?β Glycogen
Q6. Match the material with its monomer/building block:β 1-iv, 2-i, 3-ii, 4-iii
Q7. 'Molecules of life' (the major classes of biomolecules) are:β Carbohydrates, lipids, proteins and nucleic acids
Q8. Glycine, the simplest amino acid, contains which elements?β C, H, O, N
Q9. Friedrich WΓΆhler's 1828 synthesis of urea from ammonium cyanate was historically important because it:β Disproved vitalism by making an organic compound from inorganic material
Q10. The Buchner brothers' demonstration that cell-free yeast extract can ferment sugar was important because it showed:β Enzymes (not living cells) catalyse biochemical reactions
Q11. The principle of the 'chemical unity of life' refers to the observation that:β Diverse organisms share the same basic biomolecules and metabolic pathways
Q12. Which monomeric subunit corresponds to the macromolecule 'protein'?β Amino acid
Q13. Which monomer builds nucleic acids (DNA/RNA)?β Nucleotide
Q14. Hydrogen, oxygen, carbon and nitrogen together make up approximately what fraction of the mass of living matter?β Over 95%
Q15. Which of the following is a monosaccharide (the monomer of polysaccharides)?β Glucose
Q16. The hierarchical organisation of biomolecules is best described as:β Monomeric subunits β macromolecules β supramolecular assemblies
Q17. The fatty acid palmitic acid (Cββ
HββCOOH) contains which elements?β C, H, O only
Q18. Which pioneering technique, central to modern biochemistry, allows determination of protein three-dimensional structure at atomic resolution?β X-ray crystallography
Q19. In the molecular logic of life, the same monomer can build different polymers. Glucose is the monomer of all of the following EXCEPT:β Protein
Q20. Biochemistry as a discipline is best described as the study of:β The chemical processes and molecules within and relating to living organisms