Molecules of Life Quiz

Why water is known as a universal solvent?

• Low viscosity

• Polar molecules

• High specific heat

• High boiling point

Name the bond between the oxygen and hydrogen atoms in a water molecule.

• Covalent

• Hydrogen

• Ester

• Ionic

Which statement is NOT the property of water?

• It is non-polar molecule

• Water is a solvent for ions and polar molecules

• Water has high specific heat capacity

• Water has high surface tension

What determines the cohesiveness of water molecules?

• Ionic bonds

• Hydrogen bonds

• Nonpolar covalent bonds

• Hydrophobic interactions

Which of the following is NOT TRUE about hydrogen bonding?

• Enables ice to float on water

• Involved in the cohesion of water

• Bond between the water molecules

• Causes water to have low heat of vaporization.

Why does glucose dissolve in water?

• It is hydrophobic

• It is a polysaccharide

• It has a very reactive primary structure

• It has polar hydroxyl groups that interact with polar water molecules

How many water molecules can form hydrogen bonds with one water molecule?

• 2

• 3

• 4

• 5

What is the difference between α-glucose and β-glucose molecules?

• The position of carbonyl group

• The position of H and OH group at carbon 1.

• α- glucose is a reducing sugar while β-glucose is a non-reducing sugar.

• α-glucose is a monomer for cellulose while β-glucose is a monomer for starch.

Which of the following carbohydrates will yield TWO molecules of α-glucose upon hydrolysis?

• Fructose

• Maltose

• Galactose

• Ribose

When β-glucose is condensed to form polymer, which of the following molecule will be produced?

• Starch

• Glycogen

• Insulin

• Cellulose