MCQ TOPIC 1

The partially negative charge at one end of one water molecules is

attracted to the partially positive charge of another water molecule.

What is this attraction called?

• a covalent bond.

• a hydrogen bond.

• an ionic bond.

• a hydrophilic bond.

At what temperature is water at its densest?

• 0°C

• 4°C

• 32°C

• 100°C

Water is a universal solvent due to its

• low viscosity.

• polar molecules.

• high specific heat.

• high boiling point.

When β-glucose condensed to form a polymer, which of the following

molecule is produced?

• Glycogen

• Starch

• Cellulose

• Insulin

Which of the following carbohydrate will yield two molecules of glucose upon

hydrolysis?

• Fructose

• Galactose

• Maltose

• Ribose

The most common monomer of carbohydrates is a molecule of

• Glucose

• Maltose

• Amino acid

• Phospholipids

Which of the following is TRUE of both starch and cellulose?

• They are both polymers of glucose.

• They are both used for storing energy in plants.

• They are both used for structure in plant cells.

• They both make up a considerable part of the plasma membrane.

Which pair is MISMATCHED?

• monosaccharide: maltose

• disaccharide: sucrose

• polysaccharide: cellulose

• None of these pairs are correctly matched.

Carbohydrate molecules:

• Serve as structural components of human cell walls.

• Form the regulatory compounds known as enzymes.

• Are a source of energy.

• Contain the genetic information of a cell and help protect vital organs

  from damage.

A chemical reaction in which organic compounds are synthesized from their

building blocks is called:

• hydrolysis.

• condensation.

• oxidation.

• reduction.