Lesson Check - Macromolecules PT 2

For every 2 hydrogen atoms in a carbohydrate, how many oxygen atoms are there?

• 1

• 2

• 3

• 4

What is a key structural feature of proteins?

• Nitrogen bonded to two hydrogens

• Oxygen bonded to two carbons

• Carbon bonded to two oxygens

• Hydrogen bonded to two nitrogens

What type of biological molecules are proteins?

• Lipids

• Polymers

• Monosaccharides

• Nucleotides

What is the acronym to remember the elements in lipids?

• CHON

• CHO

• COH

• HOC

What group is identifiable at the end of a lipid chain?

• Hydroxyl group

• Amino group

• Carboxyl group

• Phosphate group

Which of the following is a common characteristic of lipids?

• Soluble in water

• Insoluble in water

• Highly reactive

• Electrically charged

Which of the following is a function of lipids in the body?

• DNA replication

• Hormone production

• Protein synthesis

• Photosynthesis

What is a function of lipid?

• structural support

• cushions organs

• stores genetic info

What is one of the functions of lipids in animals, plants, and fruits?

• Conduct electricity

• Waterproof surfaces

• Absorb light

• Produce sound

What is a function of proteins?

• Adipose tissue

• insulation

• genetic info

• Enzymes for reactions