1
MCQ (Single Correct Answer)

NEET 2017

Which of the following statements is not correct?
A
Ovalbumin is a simple food reserve in egg-white.
B
Blood proteins thrombin and fibrinogen are involved in blood clothing.
C
Denaturation makes the proteins more active.
D
Insulin maintains sugar level in the blood of a human body.

Explanation

Denaturation changes the structure of a protein and protein loses its activity.
2
MCQ (Single Correct Answer)

NEET 2016 Phase 2

The correct corresponding order of names of four aldoses with configuration given below

respectively, is
A
L-erythrose, L-threose, L-erythrose, D-threose
B
D-threose, D-erythrose, L-threose, L-erythrose
C
L-erythrose, L-threose, D-erythrose, D-threose
D
D-erythrose, D-threose. L-erythrose, L-threose

Explanation

3
MCQ (Single Correct Answer)

NEET 2016 Phase 1

In a protein molecule various amino acids are linked together by
A
peptide bond
B
dative bond
C
$$\alpha $$-glycosidic bond
D
$$\beta $$-glycosidic bond.

Explanation

In a protein molecule various amino acids are linked together by peptide bond.
4
MCQ (Single Correct Answer)

NEET 2016 Phase 1

Which one given below is a non-reducing sugar?
A
Glucose
B
Sucrose
C
Maltose
D
Lactose

Explanation

All monosaccharides whether aldoses or ketoses are reducing sugars. Disaccharides such as sucrose in which the two monosaccharide units are linked through their reducing centres i.e., aldehydic or ketonic groups are non-reducing.

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