IB Biology Carbohydrates, Proteins & Lipids

Which molecule is shown in the diagram?

• alpha glucose

• beta glucose

• ribose

• maltose

Which molecule is shown in the diagram?

• alpha glucose

• beta glucose

• ribose

• maltose

The smallest subunit (monomer) of all carbohydrates is called a _____________.

Which of the following carbohydrates are disaccharides?

One, some or all answers may be correct.

• maltose

• lactose

• starch

• sucrose

Two alpha glucose molecules can be joined to form the disaccharide maltose.

Which type of reaction is used to produce maltose?

• carboxylation

• esterification

• hydrolysis

• condensation

What is the name of the bond that is used to join monosaccharides together?

• ester bond

• peptide bond

• hydrogen bond

• glycosidic bond

The monosaccharides glucose and fructose have the same molecular formula (C₆H₁₂O₆).

They can join to form the disaccharide sucrose.

What is the molecular formula of sucrose?

• C₁₂H₂₄O₁₂

• C₁₂H₂₃O₁₀

• C₁₂H₂₂O₁₁

• C₁₂H₂₀O₁₀

What type of reaction is used to breakdown a polypeptide (protein) into amino acids?

Which of the following monosaccharides are present in lactose?

One, some or all answers may be correct.

• alpha glucose

• fructose

• beta glucose

• galactose

Which of the following could be a glycosidic bond?

• C-O

• C-N

• C-H

• C=C