Lesson Plan: Exchange and Transport
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the need for exchange of substances in organisms and explain how cells are adapted for this.
Objectives
Students will be able to
- explain the need for the exchange of substances such as oxygen, , water, minerals, and glucose in living organisms,
- explain how biological surfaces and transport systems enable these exchanges,
- calculate the surface-area-to-volume ratio and the rate of exchange and explain their biological meaning,
- state substances transported into and out of cells in the circulatory system,
- give examples of organisms that have highly adapted transport systems and exchange surfaces.
Prerequisites
Students should already be familiar with
- the structure of cell membranes,
- mechanisms of diffusion and osmosis in the movement of gas and substances into and out of cells,
- the basic structures and functions of the circulatory and respiratory systems.
Exclusions
Students will not cover
- renal osmoregulation,
- processes of waste removal in organisms.