33. Triglycerides are composed of A. monosaccharides. B. amino acids. C. nucleot

Question

33. Triglycerides are composed of A. monosaccharides. B. amino acids. C. nucleotides. lycerol and fatty acids. None of these choices is correet. 34. The building blocks of proteins are A. triglycerides. B. phospholipids. amino acids. monosaccharides. E. eicosanoids. 35. An enzyme A. increases the activation energy needed in a chemical reaction. B. is permanently changed in a chemical reaction. , C. decreases the activation energy needed in a chemical reaction. D. is a protein catalyst. E. Both C and D are correct. 2 36. Which of the following results from a change in shape of a protein? A. decomposition to amino acids break up of peptide bonds creates a better fit for the receptors -D:denaturation and loss of biological activity. E. increased sensitivity and enhanced biological activity 37. Which of the following nitrogen bases is found in RNA but not DNA? A. adenine B. guanine C. thymine uracil E. cytosine 38. Which of the following chemical reactions best represents the synthesis of ATP? A. ATP+H20-ADP+ P+energy ADP + P + energy-, ATP + 110 C. ADP+ADP+ ADP-ATP energy D. ATP+ energy ADP+HO E ATP+ADP-ATP 39. Proteins are 7 A. critically important for physiological processes B. composed of fatty acids C. composed of nucleic acids D macromolecules with sub-units linked by polypeptide bonds £ Both A and D are correct

Explanation / Answer

33. Triglyceride are derivative of glycerol in which hydroxy groups are substituted by activated fatty acids. Option D is correct.

34. Aminoacids are joined by peptide bonds and form protein. Option C is correct.

35. Enzyme is a protein catalyst which are highly specific and involved in biochemical reactions. Option D is correct.

36. Protein is folded into three dimensional configuration to become active and any change in configuration may cause protein inactive. Option D is correct.

37. In RNA uracil is added corresponding to Adenine in templete strand of DNA. Option D is correct.

38. ADP and Pi are converted into ATP by utilising energy released in reactions. Option B is correct.

39. Proteins are important in physiological processes like various enzymes in metabolic pathways and are polyers of aminoacids linked with peptide bond. Option E is correct.

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