Macromolecules

What is the smallest subunit of carbohydrates?

• monosaccharide

• disaccharide

• polysaccharide

• starch

Answer explanation

Remember your scientific terms:

Mono- means one

Di- means two

Poly- means many

-saccharide refers to carbohydrates.

Why do we need carbohydrates?

• used to build enzymes

• main source of energy for the body

• important component of our DNA

• main component of our cell membranes

Which of the following describes a dehydration synthesis for carbohydrates?

• glucose are combined to form maltose and water

• maltose are combined to form glucose and water

• water is added to maltose to form glucose

• water is added to glucose to form maltose

Answer explanation

Think about two things:

1. does dehydration SYNTHESIS build or break down?

2. Which is the monomer; glucose or maltose?

Which of the following describes hydrolysis for carbohydrates?

• glucose are combined to form maltose and water

• maltose are combined to form glucose and water

• water is added to maltose to form glucose

• water is added to glucose to form maltose

Answer explanation

Think about two things:

1. does hydrolysis build or break down?

2. Which is the monomer; glucose or maltose?

Which of the following are examples of polysaccharides?

• glucose

• maltose

• glycogen

• cellulose

If you added Benedict's solution to a sample and got a positive result, what conclusion could you make?

• there are carbohydrates present

• there are lipids present

• there are proteins present

• there are nucleic acids present

What are the smallest subunits of lipids?

• glycerol

• fatty acids

• triglyceride

• phospholipid

Why do we need lipids?

• used to build enzymes

• main source of energy for the body

• important component of our DNA

• main component of our cell membranes

Which of the following describes dehydration synthesis for a triglyceride?

• glyceride and 3 fatty acids are combined to form the triglyceride and water

• triglycerides are combined to form glyceride and 3 fatty acids and water

• water is added to a triglyceride to form glyceride and 3 fatty acids

• water is added to glyceride and 3 fatty acids to form triglyceride

Answer explanation

Think about two things:

1. does dehydration SYNTHESIS build or break down?

2. Which is the monomer; triglyceride or the glyceride and fatty acids?

Which of the following describes hydrolysis of a triglyceride?

• glyceride and 3 fatty acids are combined to form the triglyceride and water

• triglycerides are combined to form glyceride and 3 fatty acids and water

• water is added to a triglyceride to form glyceride and 3 fatty acids

• water is added to glyceride and 3 fatty acids to form triglyceride

Answer explanation

Think about two things:

1. does hydrolysis build or break down?

2. Which is the monomer; triglyceride or the glyceride and fatty acids?