IB Biology Practice Questions Test! Quiz
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The study of biology is what gives us our knowledge of life in the world around us from a scientific standpoint. It allows us to know more about ourselves and what we are comprised of, what the functions of our components are, and it goes even deeper by looking at animals, plants, and even organisms too small to see. What do you know about biology? Let’s find out.
- 1.What is one role of the element phosphorus?
- 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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