Are the germs that are responsible for causing disease?
Bacteria. These one-cell organisms are responsible for illnesses such as strep throat, urinary tract infections and tuberculosis. Viruses. Even smaller than bacteria, viruses cause a multitude of diseases ranging from the common cold to AIDS.
How does bacteria cause disease in the body?
Bacteria are also used in making healthy foods like yogurt and cheese. But infectious bacteria can make you ill. They reproduce quickly in your body. Many give off chemicals called toxins, which can damage tissue and make you sick.
How do harmful bacteria cause disease in humans?
Sometimes bacteria multiply so rapidly they crowd out host tissues and disrupt normal function. Sometimes they kill cells and tissues outright. Sometimes they make toxins that can paralyze, destroy cells’ metabolic machinery, or precipitate a massive immune reaction that is itself toxic.
Are bacteria responsible for diseases?
Bacteria can be strictly pathogenic, which means that they will cause disease if they manage to overwhelm the human immune system. Other bacteria only cause disease given the right circumstances, these are so-called opportunistic pathogens.
Is bacteria more complex than a virus?
Bacteria are bigger and more complex than viruses, though they can still spread through the air. A bacterium is a single cell, and it can live and reproduce almost anywhere on its own: in soil, in water and in our bodies.
Are there any diseases that can be caused by bacteria?
The Bad. Of course, some species of bacteria in your body can result in diseases, such as cancer, diabetes, cardiovascular disease, and obesity. [3] Usually, these diseases happen only when the normal microbiome is disrupted, but that can occur even from antibiotics.
How does infection occur in the human body?
Infection occurs when viruses , bacteria, or other microbes enter your body and begin to multiply. Disease occurs when the cells in your body are damaged as a result of infection and signs and symptoms of an illness appear.
What are the bad bacteria in your body?
The Bad Of course, some species of bacteria in your body can result in diseases, such as cancer, diabetes, cardiovascular disease, and obesity. Usually, these diseases happen only when the normal microbiome is disrupted, but that can occur even from antibiotics.
What do bacteria do in the human body?
For instance, bacteria break down carbohydrates (sugars) and toxins, and they help us absorb the fatty acids which cells need to grow. Bacteria help protect the cells in your intestines from invading pathogens and also promote repair of damaged tissue.
What kind of infections can be caused by bacteria?
In some cases that environment is a human body. Bacteria can reproduce outside of the body or within the body as they cause infections. Some infections that bacteria can cause include ear infections, sore throats (tonsillitis or strep throat), cavities, and pneumonia (say: new-MO-nyuh). But not all bacteria are bad.
What are Germs and what do they do to your body?
But there is a group of tiny invaders that can make our bodies sick — they’re called germs. Some kids may think that germs are bugs or cooties or other gross stuff. Actually, germs are tiny organisms, or living things, that can cause disease. Germs are so small and sneaky that they creep into our bodies without being noticed.
Are there any bacteria that are bad for your body?
Bacteria can reproduce outside of the body or within the body as they cause infections. Some infections that bacteria can cause include ear infections, sore throats (tonsillitis or strep throat), cavities, and pneumonia (say: new-MO-nyuh). But not all bacteria are bad. Some bacteria are good for our bodies — they help keep things in balance.
How are viruses and bacteria related to each other?
Viruses are often the cause of respiratory illnesses (such as the common cold) and digestive illnesses (such as diarrhea). Bacteria can infect any part of the body. But they often cause diarrhea when they get into the digestive tract.