IB Bio Questions
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Practice IB HL Biology questions, enjoy.
- 1.
- A.
It forms part of the structure of amino acids.
- B.
It forms part of the structure of fatty acids.
- C.
It forms part of the structure of ribose.
- D.
It forms part of the structure of nucleotides.
- 2.Which molecule is a monosaccharide?
- A.
Ribose
- B.
Glycogen
- C.
Amylase
- D.
Glycerol
- 3.What is a role of carbohydrates in animal cells?
- A.
As channels for passive transport
- B.
As enzymes
- C.
As energy storage
- D.
As components of the animal cell wall
- 4.
- A.
I and II only
- B.
II and III only
- C.
I and III only
- D.
I, II and III
- 5.In which part of the digestive system is most water re-absorbed?
- A.
The kidneys
- B.
The stomach
- C.
The small intestine
- D.
The large intestine
- 6.Which of the following reactions occurs when a dipeptide is formed from amino acids?
- A.
Hydrolysis
- B.
Denaturation
- C.
Condensation
- D.
Oxidation
- 7.
- A.
Hormones
- B.
Energy storage
- C.
Transport
- D.
Structure
- 8.Which of the following could be a function of a membrane protein?
- A.
Energy storage
- B.
Enzymatic activity
- C.
Oxygen uptake
- D.
Thermal insulation
- 9.What can reduce the effect of a competitive inhibitor of an enzyme?
- A.
Decrease the temperature at which the reaction takes place.
- B.
Increase the temperature at which the reaction takes place.
- C.
Increase the substrate concentration.
- D.
Add a non-competitive inhibitor.
- 10.Which of the following could cause denaturation of an enzyme?
- A.
Substrate concentration
- B.
A competitive inhibitor
- C.
High temperature
- D.
Low salt concentration
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