Immunity – Allergies
Allergy means ‗altered reaction‘ – it is the inappropriate and harmful response...
GCE A-level Biology
Chemotherapy and antibiotics
the term antibiotic strictly refers to substances that are of biological origin...
Infectious diseases – AIDS
ACQUIRED IMMUNODEFICIENCY SYNDROME (AIDS) caused by HIV; the virus infects and destroys...
Infectious diseases – tuberculosis
Causes of TB TB is caused by two bacteria; Mycobacteria tuberculosis and...
Infectious diseases -Malaria
malaria is caused by a single celled organism called the organism is...
Infectious diseases
Why infectious diseases are the leading causes of death in developing countries...
Infectious diseases – Cholera
Cholera is a water-borne disease caused by a bacterium. It often appears...
Health and diseases drugs
Drugs any man-made chemical taken into the body, (broadly) any chemical...
Smoking and diseases
Effects of tar in tobacco smoke on the gaseous exchange system stimulates...