Phospholipids are esters of glycerol with
1. one carboxylic acid residue and two phosphate groups
2. three phosphate groups
3. three carboxylic acid residues
4. two carboxylic acid residues and one phosphate groups
Which one of the following gives positive Fehling's solution test ?
Which of the following is the sweetest sugar?
a-D-(+)-glucose and b-D-(+)-glucose are
4. geometrical isomers
The couplings between base units of DNA is through
1. hydrogen bonding
2. electrostatic bonding
3. covalent bonding
4. van der waal's forces
The segment of DNA which acts as the instrumental manual for the synthesis of the protein is
Which of the following structures represents the peptide chain ?
On hydrolysis of starch, we finally get
4. Both 1 and 3
Which of the following is corect about H-bonding in nucleotides ?
1. A-T, G-C
2. A-G, T-C
3. G-T, A-C
4. A-A, T-T
During the process of digestion, the proteins present in food materials are hydrolysed to amino acids. The two enzymes involved in the process
1. amylase and maltase
2. diastase and lipase
3. pepsin and trypsin
4. invertase and zymase