Phospholipids are esters of glycerol with

(a) one carboxylic acid residue and two phosphate groups

(b) three phosphate groups

(c) three carboxylic acid residues

(d) two carboxylic acid residues and one phosphate groups

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Which one of the following gives positive Fehling's solution test ?

1. Sucrose

2. Glucose

3. Fats

4. Protein

Concept Questions :-

Carbohydrates - Classification, D-L configuration
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Which of the following is the sweetest sugar?

1. Sucrose

2. Glucose

3. Fructose

4. Maltose

Concept Questions :-

Carbohydrates - Classification, D-L configuration
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a-D-(+)-glucose and b-D-(+)-glucose are

1. anomers

2. epimers

3. enantiomers

4. geometrical isomers

Concept Questions :-

Carbohydrates - Classification, D-L configuration
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The couplings between base units of DNA is through

(a) hydrogen bonding

(b) electrostatic bonding

(c) covalent bonding

(d) van der waal's forces

Concept Questions :-

Nucleic Acids: DNA and RNA
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The segment of DNA which acts as the instrumental manual for the synthesis of the protein is 

(a) nucleotide

(b) ribose

(c) gene

(d) nucleoside

Concept Questions :-

Nucleic Acids: DNA and RNA
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Which of the following structures represents the peptide chain ?

Concept Questions :-

Proteins - α - amino acids, peptide bond, proteins, structure of proteins
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On hydrolysis of starch, we finally get

1. glucose

2. fructose

3. Maltose

4. Both 1 and 3

Concept Questions :-

Carbohydrates - Classification, D-L configuration
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Which of the following is corect about H-bonding in nucleotides ?

(a) A-T, G-C

(b) A-G, T-C

(c) G-T, A-C

(d) A-A, T-T

Concept Questions :-

Nucleic Acids: DNA and RNA
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During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process

Proteins Enzyme (A) Polypeptides                Enzyme (B) Amino acids,

are respectively                

(a) amylase and maltase

(b) diastase and lipase

(c) pepsin and trypsin

(d) invertase and zymase

Concept Questions :-

Proteins - α - amino acids, peptide bond, proteins, structure of proteins
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