29. (TCO 2) If amino acid methi nine and phenytal nine formed a dipeptide Met Ph

Question

29. (TCO 2) If amino acid methi nine and phenytal nine formed a dipeptide Met Phe, which of the functional groups will form a peptide bond? (Points: 6 Spellchecker 30. (TCO 2) Identify the type of (1) chemical bond and (2) type of linkage that is called a peptide bond. (3 points). (Points : 6) Spellchecker 31. (TCO 2) Describe the difference between concerted and sequential models for allosteric enzymes. (Points : 6) Spellchecker 22. (TCO 4) Describe the (1) compositions, (2) structures, and (3) functions of glycosaminoglycans. (2 points each) (Points : 6) Spellchecker

Explanation / Answer

29. Formation of a peptide bond between two functional groups,

-COOH group of methionine

-NH2 group of phenyl alanine

30. (1) name of bond : amide

(2) peptide bond : -CO-NH- linake

31. concerted regulation of alosteric enzyme is based on the assumption that the conformation change in one part of enzyme affect the structure and function of whole enzyme whereas sequential regulation is done is stepwise change without affecting the entire enzyme structure and function

35. Electron transport chain basic function is to create and maintain a proton gradient accross the membrane for transport of minerals.

1. True statement sabout covalent bonds,

Biological macromolecules are formed by covalent bond

2. Quaternary structure of proteins,

Quaternary structures are made of polypeptides bound to each other suing non-covalent interactions

3. Secondary structure of proteins

Secondary structures such as alpha-helix and beta-sheets are made due to hydrogen bonds

4. False statement about enzymes,

Enzymes alter the thermodynamics of a reaction

5. True statement about enzymes,

Enzymes are not used up in a chemical reaction

6. True statement about random mechanism,

In random mechanism, there is no order in which substrate can bind and form products

7. True statement about ordered mechanism,

In ordered mechanism, there is a strict rule in which substrate can bind and form products

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