TRANSPORT SYSTEM 1

BIOLOGY SSS 2 FIRST TERM

WEEK FOUR

TRANSPORT SYSTEM 1

PERFORMANCE OBJECTIVE

Students should be able to;

1. Define diffusion
2. Explain the inadequacy of diffusion alone as a system of transport for complex organisms
3. Explain the necessity of a transport system in a complex organism
4. Identify the source of material and where they are transported to.

CONTENT

In biology, transport refers to the act or how a molecule or ion is moved across the cell membrane or via the bloodstream. There are two types of transport in this regard: (1) passive transport and (2) active transport. Passive transport is a kind of transport by which ions or molecules move along a concentration gradient, which means moving from an area of higher…