Biology B6 (12)

health and disease

a healthy organism is one that is functioning just as it should be, both physically and mentally

a disease is a condition that impairs the normal functioning of an organism

causes of disease

pathogens

mutation in genes

environmental conditions

poor diet

 lack of exercise 

diseases can be communicable or non- communicable 

pathogens are an microorganism that causes disease

types of pathogens- virus, fungi,bacteria, protists

communicable disease is one that can be spread, caused by pathogens

malaria is caused by a protist and tobbaco mosiac disease in plnats is casued by a virus

non- communicable diseases cannot be passed from one organism to another 

cariovascular diseases and respiratory diseases and cancers and…