Biochemistry - Mock Test 47

Question 461

Achylia gastrica is said to be when absence of?

A) Pepsin only B) Both pepsin and HCl C) HCl only D) All of these

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Question 462

The milk protein in the stomach of the infants is digested by?

A) Pepsin B) Trypsin C) Chymotrypsin D) Rennin

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Question 463

In glycoproteins the carbohydrate is in the form of disaccharide units, the number of units are?

A) 50–100 B) 200–300 C) 400–500 D) 600–700

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Question 464

When egg albumin is heated till it is coagulated, the secondary and tertiary structures of the proteins are completely lost resulting in a mixture of randomly arranged?

A) Dipeptide chains B) Tripeptide chains C) Polypeptide chains D) All of these

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Question 465

In case of severe denaturation of protein, there is?

A) Reversible denaturation B) Moderate reversible denaturation C) Irreversible denaturation D) None of these

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Question 466

The antigenic antibody functions of proteins by denaturation are frequently?

A) Not changed B) Changed C) Both A and B D) None of these

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Question 467

The digestability of certain denatured proteins by proteolytic enzymes?

A) Decreases B) Increases C) Normal D) None of these

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Question 468

The hydrogen bonds between peptide linkages are interfered by?

A) Guanidine B) Uric acid C) Salicylic acid D) Oxalic acid

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Question 469

The hydrogen bonds in the secondary and tertiary structure of proteins are directly attacked by?

A) Salts B) Alkalies C) Detergents D) All of these

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Question 470

When haemoglobin takes up oxygen there is a change in the structure due to the moving closer together of?

A) β-chains B) β-chains C) γ-chains D) α and γ chains

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