Search over 10,000 free study notes

First, let's talk about the components of water. Water molecules are made of two hydrogen and one oxygen atom bonded together covalently, like many other molecules. However, water is extremely special bec...

Passive transport Diffusion = occurs in gases or aqueous solutions whereby particles are free to move and spread from a higher concentration to a lower concentration. An example is air freshener being spr...

In most food chains, all of the energy which is used originally comes from the sun. Plants are "photoautotrophs", which means that they can use light energy from the sun to fuel their life proce...

1 a) Trachea, bronchi, bronchioles, alveoli,diaphragm

b) It is a muscle important in the function of respiration

On inhalation, the diaphragm CONTRACTS and FLATTENS. Air is drawn INTO ...

When an individual's blood glucose concentration rises above the normal range (approximately 70-100mmol/100cm^3), alpha cells in the Islets of Langerhans in the pancreas detect this change and release glu...