IB Biology - Unit 2 Revision

Which branch of Biology explains living processes in terms of the chemical substances involved?

• Cell Biology
• Molecular Biology
• Environmental Biology
• Chemical Biology

How many bonds can a carbon atom form?

• 2
• 1
• 4
• 6

Which biological molecules are composed of carbon, hydrogen and oxygen in a 1:2:1 ratio?

• Proteins
• Carbohydrates
• Nucleic Acids
• Lipids

Which biological molecules are insoluble in water and includes steroids and waxes?

• Proteins
• Nucleic Acids
• Carbohydrates
• Lipids

Which triglycerides are liquid at room temperature?

• Steroids
• Fats
• Oils
• Waxes

Which biological molecules contain the elements carbon, hydrogen, oxygen and nitrogen?

• Carbohydrates
• Lipids
• Proteins
• Nucleic Acids

What are the monomers that make up proteins?

• Glucose
• Pentose Sugar
• Amino Acids
• Glycerol

What are the subunits that make up nucleic acids called?

• Ribose
• Phosphate backbone
• Deoxyribose
• Nucleotides

What is the name for all the enzyme catalysed reactions in a cell or organism?

• Respiration
• Anabolism
• Metabolism
• Catabolism

What is the name for the synthesis of complex molecules from simpler molecules?

• Anabolism
• Respiration
• Metabolism
• Catabolism