Causes and Spread of Infection
ICO2: Causes and spread of infection 1.1 Bactetria are: Bacteria are organisms made up of just one cell. They are capable of multiplying by themselves, as they have the power to divide into different shapes. Their shapes vary, and that’s how they are used to separate them into groups. Usually a few micrometres in length. Bacteria are present in most surroundings on the planet, growing in soil, acidic hot springs, radioactive waste, water, and deep in the Earth's crust, as well as in organic matter and the live bodies of plants and animals, providing outstanding examples of mutualism in the digestive tracts of humans, termites and cockroaches.
Viruses are: Viruses are too small to be seen by the naked eye. They can't multiply on their own, so they have to invade a host cell and take over its machinery in order to be able to make more virus particles.
Fungi are: Fungi are living organisms that are distantly related to plants, and more closely related to animals, but rather different from either of those groups. Fungi have similar physical characteristics to plants and are sometimes mistakenly put in the plant characteristics.
Parasites are: Parasites are living organisms that live and feed on an organism's or host's body. They jump from one host to the other damaging the body as they go along the most common carriers like mosquitoes and tick which are never harmed by these parasites. They may be transmitted from animals to humans, from humans to humans, or from humans to animals. Several parasites have emerged as significant causes of foodborne and waterborne disease. These organisms live and reproduce within the tissues and organs of infected human and animal hosts, and are often excreted in faeces.
1.2 Name some common illness caused by bacteria: * Salmonellosis, * tuberculosis, * MRSA, * food poisoning, dysentery, * bronchitis, * ear infections, * strep throat/tonsillitis, * gonorrhoea, *
Viruses are: Viruses are too small to be seen by the naked eye. They can't multiply on their own, so they have to invade a host cell and take over its machinery in order to be able to make more virus particles.
Fungi are: Fungi are living organisms that are distantly related to plants, and more closely related to animals, but rather different from either of those groups. Fungi have similar physical characteristics to plants and are sometimes mistakenly put in the plant characteristics.
Parasites are: Parasites are living organisms that live and feed on an organism's or host's body. They jump from one host to the other damaging the body as they go along the most common carriers like mosquitoes and tick which are never harmed by these parasites. They may be transmitted from animals to humans, from humans to humans, or from humans to animals. Several parasites have emerged as significant causes of foodborne and waterborne disease. These organisms live and reproduce within the tissues and organs of infected human and animal hosts, and are often excreted in faeces.
1.2 Name some common illness caused by bacteria: * Salmonellosis, * tuberculosis, * MRSA, * food poisoning, dysentery, * bronchitis, * ear infections, * strep throat/tonsillitis, * gonorrhoea, *