Question

4 multiple answer 1 point which of the following are examples of osmosis? (select all that apply) oxygen moving from the lungs into the blood water entering a cell placed in a hypotonic solution glucose moving through a membrane water moving into a plant’s roots 5 multiple choice 1 point what is required for osmosis to occur? a chemical indicator a semipermeable membrane active transport energy input from the cell

Explanation:

• Osmosis is the movement of water molecules from an area of higher water potential to an area of lower water potential across a semi - permeable membrane.
• For question 4: Oxygen moving from the lungs into the blood is diffusion of a gas, not osmosis. Water entering a cell in a hypotonic solution is osmosis as water moves across the cell membrane. Glucose moving through a membrane is facilitated diffusion or active transport, not osmosis. Water moving into a plant's roots occurs by osmosis across root cell membranes.
• For question 5: A semi - permeable membrane is required for osmosis to occur as it allows water molecules to pass through while restricting the movement of solute particles. A chemical indicator is not needed, osmosis is a passive process so no active transport or energy input from the cell is required.

Answer:

1. Water entering a cell placed in a hypotonic solution, Water moving into a plant’s roots
2. A semipermeable membrane