Surface Area : Volume

Question 1

A single celled organism has a relatively large surface area to ______ ______

Answer 1

volume ratio

Question 2

This allows sufficient transport of _________ into and out of the cell to meet the needs of the organism

Answer 2

molecules

Question 3

Multi-cellular organisms need exchange surfaces and transport systems to get ________ and _________ to their cells.

Answer 3

• oxygen
• nutrients

Question 4

Each exchange surface in multicellular organisms can be made more effective by having:

Answer 4

• large surface area
• thin membrane which provides a short diffusion path
• (in animals) having an efficient blood supply
• (in animals, for gaseous exchange) being ventilated