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Mutations of pathogens produce new strains. Vaccinations may no longer be effective against these new strains. Vaccinations would kill non-resistant strain pathogens. However, resistant strain pathogens w...
Vaccines are small quantities of dead or inactive forms of a pathogen (disease). Vaccines stimulate white blood cells to produce antibodies. These antibodies destroy the pathogensthis makes the person imm...
The binomal system was invented by Carl Linnaeus in the 1700s. Latin binomials are names we use to identify different species. They come in two parts ('bi' means two, and 'nomial' means name) which identi...
The overall equation for photosynthesis: Light energy Carbon dioxide + water -----> oxygen + glucose During the process of photosynthesis, carbon dioxide from the air and water ...
Mitral Valve The mitral valve is a large 'flap' between the two left chambers of the heart. When this is open, it allows oxygenated blood to fill the left ventricle of the heart from the atrium. When the ...
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