Diffusion

Can diffusion occur in solids?

• Yes, diffusion occurs rapidly in solids.

• No, diffusion cannot occur in solids.

• Yes, diffusion occurs primarily in liquids and gases, but it can happen in solids at very slow rates.

• Diffusion occurs only in gases and not in liquids or solids.

What is passive transport?

• The movement of substances across a cell membrane without the use of energy, often through diffusion.

• The active movement of substances against their concentration gradient using energy.

• The process of engulfing substances into the cell through vesicles.

• The movement of water across a selectively permeable membrane.

What is the role of diffusion in the human body?

• Diffusion allows for the exchange of gases (like oxygen and carbon dioxide) in the lungs and the absorption of nutrients in cells.

• Diffusion is responsible for the production of hormones in the endocrine system.

• Diffusion helps in the movement of blood through the circulatory system.

• Diffusion is the process of breaking down food in the digestive system.

What happens to diffusion when a barrier is introduced?

• Diffusion continues at the same rate regardless of the barrier.

• Diffusion is limited to the areas on either side of the barrier until equilibrium is reached.

• Diffusion stops completely until the barrier is removed.

• Diffusion occurs faster due to the presence of the barrier.

What effect does an increase in temperature have on diffusion?

• An increase in temperature slows down diffusion.

• An increase in temperature has no effect on diffusion.

• An increase in temperature speeds up diffusion.

• An increase in temperature causes diffusion to stop.

Which gases move into and out of the blood at the lungs by diffusion?

• Nitrogen and Argon

• Oxygen and Carbon Dioxide

• Hydrogen and Helium

• Methane and Ammonia

How does diffusion relate to cell function?

• Diffusion is essential for cells to obtain nutrients and remove waste products.

• Diffusion is the process by which cells divide and replicate.

• Diffusion helps in the synthesis of proteins within the cell.

• Diffusion is responsible for the movement of organelles within the cell.

What is osmosis?

• A process where molecules move from an area of low concentration to an area of high concentration.

• A specific type of diffusion that involves the movement of water molecules through a semi-permeable membrane.

• The process of active transport of nutrients across cell membranes.

• A method of cell division in which the cell splits into two identical cells.

What is diffusion?

• The process of particles moving from low concentration to high concentration.

• The movement of particles from an area of high concentration to an area of low concentration.

• The mixing of different substances in a solution.

• The separation of particles based on size.

What is a real-life example of diffusion?

• The smell of perfume spreading in a room.

• Water boiling in a pot.

• Ice melting in a glass of water.

• Food cooking in an oven.