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The diagram models the movement of particles in a particular process - HSC - SSCE Biology - Question 2 - 2014 - Paper 1
Question 2
The diagram models the movement of particles in a particular process. What process is being modelled? (A) Osmosis (B) Filtration (C) Diffusion (D) Active transport
Worked Solution & Example Answer:The diagram models the movement of particles in a particular process - HSC - SSCE Biology - Question 2 - 2014 - Paper 1
Step 1
What process is being modelled?
Answer
The process being modelled in the diagram is likely Diffusion.
Explanation of Diffusion
Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration until equilibrium is reached. This process does not require energy and occurs naturally in various solutions.
Comparison with Other Processes
- Osmosis refers specifically to the movement of water molecules through a semipermeable membrane, not just any particles.
- Filtration typically involves separating solids from liquids or gases using a barrier.
- Active Transport requires energy to move molecules against their concentration gradient, which is not represented in the diagram.
Given these definitions, option (C) Diffusion is the correct answer.