Topics 2.1-2.3 Quiz

In which processes are macromolecules broken down into monomers?

• Anabolism and catabolism

• Catabolism and hydrolysis

• Hydrolysis and reduction

• Reduction and anabolism

What is a property of water?

• Water has a low specific heat capacity so large increases in heat energy cause a small temperature change.

• Water is an excellent solvent for non-polar substances.

• Covalent bonds between adjacent water molecules are responsible for its unique properties.

• Water molecules are highly cohesive which is important for transport in xylem.

Using the nomogram, what is the minimum mass at which a woman of height 165 cm would be considered overweight?

• 72

• 67

• 64

• 61

The diagram shows a type of fatty acid.

What type of fatty acid is shown?

• Trans unsaturated

• Cis unsaturated

• Trans saturated

• Cis saturated

Where do hydrogen bonds form?

• Between the slight negative charge of hydrogen and slight positive charge of oxygen within a water molecule

• Between the slight positive charge of hydrogen and slight negative charge of oxygen within a water molecule

• Between the slight positive charge of hydrogen and slight negative charge of oxygen in different water molecules

• Between the slight negative charge of hydrogen and slight positive charge of oxygen in different water molecules

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

• Its abundance in nature

• Its bonding properties

• Its reactivity to light

• Its presence in the early atmosphere of the Earth

Which type(s) of fatty acid in the diet is/are positively correlated with an increased risk of coronary heart disease?

I. Saturated

II. Trans unsaturated

III. Cis unsaturated

• I only

• I and II only

• II only

• II and III only

Which molecule represents a lipid?

• 
• 
• 
• 

Which properties explain the ability of water to dissolve solutes?

I. Polarity of water molecules

II. High specific heat capacity of water

III. Hydrogen bonding

• I and II only

• I and III only

• II and III only

• I, II and III

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