Chemistry of Life

Which Major Class of Bio-molecule is this?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Which Major Class of Bio-molecule is this?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Which Major Class of Bio-molecule is this?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

Which Major Class of Bio-molecule is this?

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

The following elements are all essential for life except

• carbon
• helium
• oxygen
• nitrogen

A substance with the pH of 4 is called

• an acid

• base

• both

• neither

When salt is dissolved in water, water is the 

• Reactant
• Solution
• Solvent
• Solute

All of the following are examples of lipids except

• oil

• fats

• candle wax

• starches

Examples of nucleic acids?

• DNA and RNA
• carbohydrates
• potatoes
• meats

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