Question

question 5
1 pts
osmosis is ___.

• facilitated diffusion
• the diffusion of salts across a membrane
• active transport
• the diffusion of water across a membrane

question 6
1 pts
in the cell membrane, the molecules which move large molecules into and out of the cell are known as ___.

• lipids
• carbohydrates
• nucleic acids
• proteins

Explanation:

Define osmosis

Using the Osmosis knowledge point

• Osmosis is the passive movement of water molecules.
• It occurs across a selectively permeable membrane.
• Water moves from low solute concentration to high solute concentration.
• Therefore, osmosis is the diffusion of water across a membrane.

Identify membrane transport molecules

Using the Cell Membrane Function knowledge point

• The cell membrane regulates transport.
• Lipids form the barrier but do not actively transport large polar molecules.
• Carbohydrates serve in cell recognition.
• Nucleic acids store genetic information.
• Proteins act as channels or carriers to move large molecules.

Answer:

Question 5

• facilitated diffusion
• the diffusion of salts across a membrane
• active transport
• the diffusion of water across a membrane (Correct answer)

Question 6

• lipids
• carbohydrates
• nucleic acids
• proteins (Correct answer)