IB Biology B

0. The Framingham heart study was an observational study that went on for 20 years. The following data were produced. Which conclusion can be drawn, based on these data?

• It is better to eat margarine than to eat butter.

• The more margarine consumed, the greater the incidence of coronary heart disease.

• Butter is a natural product whereas margarine is hydrogenated vegetable oil that leads to coronary heart disease.

• Margarine causes more heart related deaths than butter.

0. The diagram shows a molecular structure.

Which type of molecule is shown?

• Amino acid

• Lipid

• Carbohydrate

• Nucleotide

0. Which type of reaction is the breakdown of starch into sugars?

• Denaturation

• Reduction

• Catabolic

• Condensation

Tags

NGSS.MS-LS1-7

2. Which molecule is a polysaccharide?

• Cellulose

• Fructose

• Maltose

• Sucrose

1. Which always contains carbon, hydrogen and oxygen?

I. Carbohydrate

II. Protein

III. Fat

• I and II only

• I and III only

• II and III only

• I, II and III

1. What are these molecules?

• A

• B

• C

• D

Tags

NGSS.HS-LS1-6

0. Which are functions of lipids?

• Hydrophilic solvent and energy storage

• Hydrophobic solvent and membrane potential

• Thermal insulation and energy storage

• Thermal insulation and hydrophilic solvent

1. What process occurs when fatty acids combine with glycerol to make a triglyceride?

• Condensation

• Decarboxylation

• Denaturation

• Hydrolysis

2. What is the difference between galactose and lactose?

• Lactose is a disaccharide and galactose is a monosaccharide.

• Lactose is the product of anaerobic respiration in humans and galactose is the product of anaerobic respiration in yeast.

• Lactose is an enzyme and galactose is a hormone.

• Galactose is a sugar found in milk but lactose is not found in milk.

2. The diagrams show three representations of the structure of the same chemical substance. What chemical substance is shown?

• Ribose

• Glucose

• Fatty acid

• Amino acid

Tags

NGSS.HS-LS1-6

NGSS.HS-PS1-2

NGSS.HS-PS1-3