Question Bank for Grade 9 Biology

What property of water makes it the 'universal solvent'?

• it is a polar molecule
• it is an ionic compound
• it contains hydrogen bonds
• it steals electrons from other atoms

Carbohydrates are made of... 

• C H O
• C H O N
• C H O N P
• C H O N S

How many different amino acids are there?

• 4
• 20
• 6
• 46

Glucose is a _____.

• carbohydrate
• lipid
• protein 
• nucleic acid

Proteins are composed of what smaller building blocks?

• amino acids
• nucleic acids
• fatty acids
• nucleotides

Which group of organic molecules serve as long-term energy storage and make the cell membrane is?

• proteins
• carbohydrates
• lipids
• nucleic acids

The primary purpose the body uses monosaccharides for is?

• Building muscles
• Helping the Immune System
• Immediate Energy
• Generating Heat

Which of the following is LEAST likely to dissolve in water?

• nonpolar fats and oils
• polar sugar molecules
• salt made of a positive sodium ion and a negative chloride ion
• all of the substances will dissolve easily in water

Also known as simple sugars, these are the monomers of carbohydrates.

• lipids
• nucleotide
• monosaccharide
• monomer

Attractions between water molecules are called

• Covalent bonds
• Ionic bonds
• Polar bonds
• Hydrogen bonds