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The growth of most microorganisms can be divided into four different phases:Lag phase - Small populations start to replicate slowly. Replication is 'lagging' as microorganisms are adapting to condit...

(First would talk through the structure of the heart using a diagram).
Deoxygenated (lacking oxygen) blood from the body arrives into the heart via the vena cava. This empties into the right atrium a...

All cells and hence all living organisms show life functions that make them distinct from the non-living world. These include: 1.    Nutrition - the cell's ability to acquire food and res...

Phospholipids play a huge role in the human body. They are the main components of the cell membranes. They have a hydrophobic and a hydrophilic part.

A waxy cuticle is present. This is a waterproof, transparent layer that prevents evaporation of water due to heat from the sun. Because it is transparent, it allows sunlight to pass through to the palisad...