IB SL Biochemistry Review

Dissolving substance in a solution is called

• Solvent
• Suspension
• buffer
• Ion

Type of bond between atoms in which the electrons are shared is called

• Covalent bond
• Ionic bond
• Element
• Compound

Attraction between molecules of the same substance is called 

• Adhesion
• Cohesion
• Isotope
• Buffer

Force of attraction between different kinds of molecules is called 

• Adhesion
• Cohesion
• Buffer 
• Solute

Which molecule is a sugar?

• 
• 
• 
• 

Which molecule is a polysaccharide?

• Glucagon

• Glucose

• Glycerol

• Glycogen

Which substance is used for structure in plants?

• Amylopectin

• Cellulose

• Collagen

• Starch

What usually distinguishes DNA from RNA?

• DNA: Strands are symmetrical RNA: strands are antiparallel

• DNA: Contains adenine RNA: contains sytosine

• DNA: pentose linked to phosphates RNA: pentose linked to bases

• DNA: double stranded RNA; single stranded

Which of the following is the main reason that humans need to include carbohydrates in their diet?

• Carbohydrates are broken down in cells for energy.

• Carbohydrates combine to form many different proteins.

• Carbohydrates act as catalyst to speed up chemical reactions.

• Carbohydrates are the building blocks for cell growth and repair.

Tags

NGSS.HS-LS1-7

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water-permeable. This waxy coating is which of the following types of organic molecule?

• Carbohydrate

• Lipid

• Nucleic Acid

• Protein