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NEET CHEMISTRYBiomoleculesEasy

Question

Deficiency of vitamin B1 causes the disease:

A

convulsions

B

beri-beri

C

cheilosis

D

sterility

Step-by-Step Solution

Vitamin B1 (also known as thiamine) deficiency causes the disease beri-beri, which is characterised by loss of appetite, retarded growth, and nerve degeneration. Among the other options: deficiency of vitamin B2 (riboflavin) causes cheilosis (fissuring at corners of mouth and lips), deficiency of vitamin B6 (pyridoxine) causes convulsions, and vitamin E deficiency can lead to sterility and muscular weakness.

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Biomolecules. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYBiomoleculesdeficiencyvitamincausesdisease

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$\alpha$-D-glucose and $\beta$-D-glucose are:

A.Epimers
B.Anomers
C.Functional isomers
D.Chain isomers
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Fructose reduces Tollen's reagent due to:

A.Primary alcoholic group
B.Secondary alcoholic group
C.Enolisation of fructose followed by conversion to aldehyde by base
D.Asymmetric carbon
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RNA and DNA are chiral molecules, their chirality is due to:

A.L-sugar component
B.chiral bases
C.chiral phosphate ester units
D.D-sugar component
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Which of the following hormones is produced under the condition of stress which stimulates glycogenolysis in the liver of human beings?

A.Thyroxin
B.Insulin
C.Adrenaline
D.Estradiol
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Which one of the following sets of monosaccharides forms sucrose?

A.$\alpha$-D-galactopyranose and $\alpha$-D-glucopyranose
B.$\alpha$-D-glucopyranose and $\beta$-D-fructofuranose
C.$\beta$-D-glucopyranose and $\alpha$-D-fructofuranose
D.$\alpha$-D-glucopyranose and $\beta$-D-fructopyranose
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The incorrect statement about the denaturation of proteins is:

A.It results due to change of temperature and pH.
B.It results in the loss of biological activity of proteins.
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D.Uncoiling of the helical structure takes place.
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Which of the following is not a correct statement?

A.$\alpha$-carbon of $\alpha$-amino acid is asymmetric except for glycine.
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Match List-I with List-II: List-I (Vitamins) A. Vitamin K B. Vitamin $\text{B}_{12}$ C. Vitamin C D. Vitamin $\text{B}_1$ List-II (Deficiency/other name/ property) I. RBC deficient in haemoglobin II. Bleeding gums III. Thiamine IV. Fat soluble Choose the correct answer from the options given below:

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B.A-IV, B-III, C-II, D-I
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