IB Molecular Biology

What is the maximum number of bonds a carbon atom can form with another atoms?

• 3

• 2

• 4

• 6

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which chemical group do amino acids contain that carbs and lipids do not?

• hydroxyl

• amino

• carboxyl

• methyl

Which term describes the synthesis of complex molecules from simpler molecules?

• adhesion

• catabolism

• metabolism

• anabolism

Which can be explained by the solvent properties of water?

• Sodium chloride is transported as Na⁺ and Cl^– in blood.

• Movement of water occurs under tension in the xylem.

• Water is the coolant in sweat.

• Ice floats on liquid water.

Tags

NGSS.HS-ESS2-5

Which substance must be transported in the blood by lipoprotein complexes?

• Cholesterol

• Oxygen

• Sodium chloride

• Amino acids

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

• Denaturation

• Reducation

• Catabolic

• Condensation

Tags

NGSS.HS-PS1-4

Which molecule is a polysaccharide?

• Triglyceride

• Lactase

• Glycerol

• Glycogen

What property of water makes it suitable as a coolant?

• It takes a lot of energy to increase the temperature of water.

• It takes a lot of energy for water to evaporate.

• Water molecules are cohesive and stick to the skin.

• Water is a good solvent so it can transport heat from the body.

Tags

NGSS.HS-ESS2-5

Which type of chemical reaction is an example of anabolism?

• Phytolysis

• Combustion

• Hydrolysis

• Condensation

Tags

NGSS.HS-LS1-6

What feature of carbon makes it most suitable as a basis for life?

• Its abundance in nature

• Its bonding properties

• Its teativity to light

• Its presence in the early atmosphere of the Earth