WorksheetsCHAPTER 1 : MOLECULE OF LIFE
Total questions: 10
Worksheet time: 5mins
1. What is the bond that join/attract a water molecule to another water molecules ?
hydrogen bond
covalent bond
disulphide bridge
surface tension
2. Lakes only freeze on the surface because
water has high surface tension
water can act as solvent
water has low viscosity
ice is less dense than water
3. Which of the following is true about maltose and amylose?
both monomers are ß-glucose
both are polysaccharides
both are disaccharides
both contain monomers α-glucose
4. How many glycerol and fatty acid molecules are present in a triglyceride molecule?
3 glycerol and 1 fatty acid
3 glycerol and 3 fatty acids
1 glycerol and 3 fatty acids
1 glycerol and 1 fatty acid
5. Structure of a fatty acid that consists both hydrophobic region and hydrophilic region known as
amphipathic
acidic
basic
amphoteric
6. How do amino acids are classified into four groups?
based on their amino group
based on their carboxyl group
based on the numbers of carbon
based on their side chain
7. Property of amino acid that consists an amino group and a carboxyl group known as
acidic
basic
amphoteric
amphipathic
8. Pentose sugar of RNA is
ribose
deoxyribose
glucose
fructose
9. Properties of water include i. High surface tension ii. High specific heat capacity iii. High viscosity
I and II
I and III
II and III
I, II and III
10. What molecule form when 2 amino acids undergo condensation?
maltose
dipeptide
sucrose
pentose
