Question

1. the diagram represents three sections of a cell membrane showing three different methods involved in the transport of various molecules across the membrane. methods a and b are classified as methods of passive transport because they do not require? 5. what is the primary difference between diffusion and osmosis? *

Explanation:

• Question 6: Passive transport (like simple diffusion in Method A and facilitated diffusion in Method B) does not require energy in the form of ATP. Active transport (Method C) requires ATP. Carbon dioxide is a molecule that can be transported (e.g., via diffusion), but it's not what passive transport doesn't require. Light is relevant in processes like photosynthesis, not membrane transport. DNA is not involved in this type of membrane - transport energy requirement.
• Question 5: Diffusion is the movement of any substance (gas, liquid, or solid particles) from an area of high concentration to an area of low concentration. Osmosis is specifically the movement of water across a semi - permeable membrane from an area of high water concentration (low solute concentration) to an area of low water concentration (high solute concentration). Both diffusion and osmosis are passive processes (do not require energy input).

Answer:

1. a. ATP
2. d. Diffusion is the movement of any substance from high to low concentration, while osmosis is the movement of water from high to low concentration.