Transport in Cells
-Diffusion
How might substances move in and out of the cell via the membrane?
What is diffusion? What does it result in?
What substances might move in and out of cells via diffusion?
What different factors affect the rate of diffusion?
What is concentration gradient? How does it affect rate of diffusion?
How does temperature affect the rate of diffusion?
How does the surface area of the membrane affect rate of diffusion?
What is surface area to volume ratio?
Which types of organisms have high surface area to volume ratios?
What does this allow?
Which organisms have low surface area to volume ratios?
Which organisms require specialised exchange surfaces?
How are the small intestine and lungs adapted in mammals?
How are the gills in fish adapted?
How are the roots and leaves in plants adapted for exchanging materials?
What 4 things increase the effectiveness of an exchange surface?
-Osmosis
How might water move across cell surface membranes?
What is osmosis?
Active Transport
What is active transport?
Does it go against or with the concentration gradient?
Does it require energy?
What is the role of active transport in plants?
What is the role of active transport in the gut?
What do plants need ions for?
What are sugar molecules needed for?
What are the differences between osmosis, active transport, and diffusion?
-Diffusion
How might substances move in and out of the cell via the membrane?
What is diffusion? What does it result in?
What substances might move in and out of cells via diffusion?
What different factors affect the rate of diffusion?
What is concentration gradient? How does it affect rate of diffusion?
How does temperature affect the rate of diffusion?
How does the surface area of the membrane affect rate of diffusion?
What is surface area to volume ratio?
Which types of organisms have high surface area to volume ratios?
What does this allow?
Which organisms have low surface area to volume ratios?
Which organisms require specialised exchange surfaces?
How are the small intestine and lungs adapted in mammals?
How are the gills in fish adapted?
How are the roots and leaves in plants adapted for exchanging materials?
What 4 things increase the effectiveness of an exchange surface?
-Osmosis
How might water move across cell surface membranes?
What is osmosis?
Active Transport
What is active transport?
Does it go against or with the concentration gradient?
Does it require energy?
What is the role of active transport in plants?
What is the role of active transport in the gut?
What do plants need ions for?
What are sugar molecules needed for?
What are the differences between osmosis, active transport, and diffusion?
