How do microorganisms cause disease in humans? [3 MARKS]
How do microorganisms cause disease in humans? [3 MARKS]
Description: 3 Marks
Pathogens enter our body through the air we breathe, the water we drink or the food we eat. They can also get transmitted by direct contact with an infected person or carried through an animal. Microbial diseases that can spread from an infected person to a healthy person through air, water, food or physical contact. When a person suffering from common cold sneezes, fine droplets of moisture carrying thousands of viruses are spread in the air. The virus may enter the body of a healthy person while breathing. There are some insects and animals which act as carriers of disease-causing microbes. Housefly is one such carrier. The flies sit on the garbage and animal excreta. Pathogens stick to their bodies. When these flies sit on the uncovered food they may transfer the pathogens. Whoever eats the contaminated food is likely to get sick. Avoid consuming uncovered items of food.
Another example of a carrier is the female Anopheles mosquito, which carries the parasite of malaria.
Female Aedes mosquito acts as carrier of dengue virus.
Description: 3 Marks
Pathogens enter our body through the air we breathe, the water we drink or the food we eat. They can also get transmitted by direct contact with an infected person or carried through an animal. Microbial diseases that can spread from an infected person to a healthy person through air, water, food or physical contact. When a person suffering from common cold sneezes, fine droplets of moisture carrying thousands of viruses are spread in the air. The virus may enter the body of a healthy person while breathing. There are some insects and animals which act as carriers of disease-causing microbes. Housefly is one such carrier. The flies sit on the garbage and animal excreta. Pathogens stick to their bodies. When these flies sit on the uncovered food they may transfer the pathogens. Whoever eats the contaminated food is likely to get sick. Avoid consuming uncovered items of food.
Another example of a carrier is the female Anopheles mosquito, which carries the parasite of malaria.
Female Aedes mosquito acts as carrier of dengue virus.
