Biology
Grade-9
Easy
Question
Which of the following are modes of passive transport?
- Osmosis
- Diffusion
- Both a and b
- None of these
Hint:
There are three types of passive transport:
- Simple Diffusion.
- Facilitated Diffusion.
- Osmosis
The correct answer is: Both a and b
- There are three main types of passive transport: Simple diffusion – the movement of small or lipophilic molecules (e.g. O2, CO2, etc.)
- Osmosis – the movement of water molecules (dependent on solute concentrations) Facilitated diffusion – the movement of large or charged molecules via membrane proteins (e.g. ions, sucrose, etc.)
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