Question

Select ALL of the correct statements about Osmosis.
Responses

Requires the cell to use ATP
Requires the cell to use ATP

No cell energy is required
No cell energy is required

Movement into the cell
Movement into the cell

Movement out of the cell
Movement out of the cell

Movement of water only
Movement of water only

Moves from low concentration of solutes to a high concentration of solutes
Moves from low concentration of solutes to a high concentration of solutes

Moves from a high concentration of solutes to a low concentration of solutes
Moves from a high concentration of solutes to a low concentration of solutes

Movement using a protein channel
Movement using a protein channel

Movement through the phospholipid bilayer
Movement through the phospholipid bilayer

Type of bulk transport

Answer 1

The correct statements about osmosis are:

1. **No cell energy is required** - Osmosis is a passive process that does not require cellular energy (ATP).
2. **Movement of water only** - Osmosis specifically refers to the movement of water molecules across a semipermeable membrane.
3. **Moves from a low concentration of solutes to a high concentration of solutes** - Water moves from an area of low solute concentration (where there is a higher concentration of water) to an area of high solute concentration (where there is a lower concentration of water).
4. **Movement using a protein channel** - Osmosis can occur through specific protein channels called aquaporins, which facilitate the movement of water.
5. **Movement through the phospholipid bilayer** - Osmosis can also occur directly through the phospholipid bilayer of the cell membrane, although it is less efficient than through aquaporins.

The other statements are incorrect:
- **Requires the cell to use ATP** - Incorrect, as osmosis does not require energy.
- **Movement into the cell** - This is only partially correct, as osmosis can involve both movement into and out of the cell depending on the concentration gradient.
- **Movement out of the cell** - This is also partially correct for the same reason as above.
- **Moves from a high concentration of solutes to a low concentration of solutes** - Incorrect, as osmosis is characterized by the movement from low to high solute concentration.
- **Type of bulk transport** - Incorrect, as osmosis is a type of passive transport, not bulk transport like endocytosis or exocytosis.