MOLECULES OF LIFE

What is the function of nucleic acids?

• Stores energy
• Stores genetic information
• Movement
• Physical structure

What is the monomer of proteins?

• amino acids
• polypeptides
• nucleotides
• monosaccharides

Carbohydrates are made of which elements

• carbon, calcium, hydrogen
• carbon, hydrogen, oxygen
• carbon, oxygen, calcium
• carbon, oxygen, nitrogen

Nitrogen can be found in which molecule

• carbohydrates
• Lipids
• Proteins
• All of the above

A reaction that breaks apart molecules by adding water is called

• dehydration

• hydrolysis
• anabolism
• condensations

______________ makes up the cell wall

• starch
• cellulose
• glycerol
• glycogen

What type of bond can be found between amino acids?

• covalent
• hydrogen
• ionic
• peptide

The partially negative charge at one end of one water molecule 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.

Water is a versatile solvent due to its

• low viscosity.

• polar molecules.

• high specific heat.

• high boiling point.

At what temperature is water at its densest?

• 0°C

• 4°C

• 36°C

• 100°C