The different types of pathogens are bacteria, viruses, fungi and parasites. A pathogen is a microbe or microorganism that causes an infectious disease. There are many different diseases caused by these pathogens.Know More
Although there are pathogenic microbes, not all bacteria viruses, parasites and fungi cause disease. Some are beneficial like the decomposers in nature that recycle dead matter.
Certain bacteria, which are small and uni-cellular organisms, can cause different diseases like tuberculosis, salmonella and typhoid fever. Viruses can also cause viral infections, such as hepatitis and yellow fever. Similarly, parasitic organisms cause scabies and malaria, while fungal diseases are ringworm and candida.
The way in which these infectious disease are transmitted can be through water, food, insect bites and direct and indirect contact. Some examples of diseases transmitted through an insect bite are malaria and bubonic plague. Diseases transmitted through contaminated food or water are salmonella and cholera.Learn more about Biology
The most common portal of entry for pathogens is the respiratory tract. The pathogens enter through dust particles or droplets that enter the respiratory tract. Some pathogens that enter this way are the viruses known as influenza, measles and varicella-zoster, which causes chickenpox.Full Answer >
White blood cells help fight infections in the body by attacking pathogens, such as bacteria and viruses, after they invade the bloodstream. Healthline states that these cells are formed in the bone marrow and circulate throughout the bloodstream to fight and attack pathogens.Full Answer >
Some bacteria that use flagellar movement include vibrio, spirillum, klebsiella, pseudomonas, azospirillum and salmonella. Bacteria that utilize spirochaetal movement include the borrelia, treponema, leptospira, cristispira and spirochaeta. A few examples of the gliding bacteria include achroonema, alysiella and cyanobacterium Oscillatoria. Bacteria motility falls under three categories: flagellar, spirochaetal and gliding.Full Answer >
All bacteria are classified as prokaryotes, and common examples include E. coli and Streptococcus. Archaea, which has similarities to bacteria, is another domain that exclusively features prokaryotes. Prokaryotes are single-celled organisms that lack a nucleus and membrane-bound organelles such as mitochondria, chloroplasts, a golgi apparatus or an endoplasmic reticulum.Full Answer >