Download Biological Molecules - Multi Choice

Biological Molecules - Multi Choice
1. Monosaccharaides only contain which elements?
a. Carbon, Nitrogen, Hydrogen and Oxygen
b. Oxygen, Hydrogen and Carbon
c. Sulphur, Oxygen and Hydrogen
d. Carbon, Oxygen and Sulphur
2. Which is the correct structure for glucose? (ring carbons not shown)
3. The secondary structure of a polypeptide is...
a. the order of amino acids
b. the 3D shape of the molecule
c. more than one polypeptide associated together
d. alpha helices or beta pleats
4. The bonds present in the primary level of protein structure are...
a. peptide bonds
b. hydrogen bonds
c. hydrogen bonds, covalent bonds and ionic bonds
d. disulphide bridges
5. Weak bonds broken by heating are...
a. peptide bonds
b. hydrogen bonds
c. glycosidic bonds
d. covalent bonds
6. Condensation reactions involve...
a. the creation of new bonds with the addition of a molecule of water
b. the creation of new bonds with the removal of a molecule of water
c. the breaking of existing bonds with the addition of a molecule of water
d. the breaking of existing bonds with the removal of a molecule of water
7. In a saturated fatty acid...
a. there are only single bonds between the carbon atoms
b. there is one double bond between the carbon atoms
c. there is one triple bond between the carbon atoms
d. there are many double bonds between the carbon atoms
8. Phospholipids form bilayers in water because...
a. the hydrophilic head is repelled by the water and the hydrophobic tail is attracted
by it
b. the hydrophilic head is attracted by the water and the hydrophobic tail is repelled
by it
c. both the hydrophilic head and the hydrophobic tail is attracted by the water
d. both the hydrophilic head and the hydrophobic tail are repelled by the water
9. A triglyceride molecule is an ester of...
a. three fatty acids and ethanol
b. two fatty acids and glycerol
c. two fatty acids and ethanol
d. three fatty acids and glycerol
10. Draw the condensation of two amino acids below.