IB MYP Biology Diffusion – Exam Style Practice Questions
IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Metabolism-Diffusion
Topic :Metabolism– Weightage : 21 %
All Questions for Topic : Nutrition,Digestion,Biochemistry and enzymes,Movement and transport,Diffusion,Osmosis,Gas exchange,Circulation,Transpiration and Translocation,Homeostasis
Question
Living cells and organisms exchange materials with their environment. (10 marks)
(a) Select the option describing the transport mechanism in the diagrams below.(2 marks)
- Osmosis
- Diffusion
- Neither
(b) Oxygen is carried by red blood cells. State the name of the organ system which carries blood through the human body.
(c) Using scientific terms, outline why the uptake of oxygen from the lungs into the bloodstream does not require energy.
(d) Besides oxygen, the blood in the circulatory system also carries messenger substances called hormones. State the name of another system that transmits signals in the human body.
Select one of the senses.
- sight
- hearing
- taste
- smell
- touch
Explain how this sense and the transmission of signals inside the human body leads to responses which help us to survive.
You should refer to an example of a survival situation in your answer.
▶️Answer/Explanation
Ans:
(a)
(b) cardiovascular system
(c) This process is going because of differences of concentrations of gases such as oxygen and carbon dioxide. This difference causes \(t\) he diffusion to occur th
(d) nervous system
(e) Touch : It can help you to survive when, for example you are walking in the dark place and you have to touch everything and if you touch something sharp you will understand it and will avoid of going there.