how do viruses bacteria fungi and parasites infect the human body?
529815
Viruses invade a host and attach themselves to a cell. As they enter the cell, they release their genetic material. This material forces the cell to replicate the virus, and the virus multiplies. When the cell dies, it releases new viruses, which infect new cells.
984468
Fungi are multicellular, eukaryotic organisms, while bacteria are single-celled prokaryotes. ... Viruses are smaller than Fungi and Bacteria, they are not always harmful to human beings but considering they live and multiply using host material they are considered harmful in general.
1108079
Parasites are organisms that depend on other organisms for their food, shelter and then other metabolic activities. On the other hand, pathogens are organisms that cause diseases within their host. A parasite can cause a disease in the host therefore a parasite can be a pathogen.
301252
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
1398767
A virus is a microscopic particle that can infect the cells of a biological organism. ... They are similar to obligate intracellular parasites as they lack the means for self-reproduction outside a host cell, but unlike parasites, viruses are generally not considered to be true living organisms.
165820
Fungi usually make their homes in moist areas of the body where skin surfaces meet: between the toes, in the genital area, and under the breasts. Common fungal skin infections are caused by yeasts (such as Candida or Malassezia furfur) or dermatophytes, such as Epidermophyton, Microsporum, and Trichophyton.
490986
While both can cause disease, viruses are not living organisms, whereas bacteria are. Viruses are only "active" within host cells which they need to reproduce, while bacteria are single-celled organisms that produce their own energy and can reproduce on their own.
189426
Fungi are multicellular, eukaryotic organisms, while bacteria are single-celled prokaryotes. The cells of fungi have nuclei that contain the chromosomes and other organelles, such as mitochondria and ribosomes. Bacteria are much smaller than fungi, do not have nuclei or other organelles and cannot reproduce sexually.
554281
Short story: Human cells are eukaryotic which means they are more complicated, bacteria cells are prokaryotic which means they are simpler and viruses are not even cells at all, they are just genetic material in a protein shell. Not all bacteria make us sick, most actually help us e.g. in our gut.
985516
A common way for a person's hands to be infected with fungus is by scratching or touching another area of the body that has a fungal infection. For example, the feet or the groin. According to the American Family Physician, a dermatophyte fungal infection can spread from: person to person.
425921
Pathogens cause illness to their hosts through a variety of ways. The most obvious means is through direct damage of tissues or cells during replication, generally through the production of toxins, which allows the pathogen to reach new tissues or exit the cells inside which it replicated.
99878
Bacteria and viruses can live outside of the human body (for instance, on a countertop) sometimes for many hours or days. Parasites, however, require a living host in order to survive. Bacteria and parasites can usually be destroyed with antibiotics. On the other hand, antibiotics cannot kill viruses.
687615
Viruses, infections and cancer When viruses cause an infection, they spread their DNA, affecting healthy cells' genetic makeup and potentially causing them to turn into cancer. HPV infections, for instance, cause the virus' DNA to combine with the host's DNA, disrupting the normal function of cells.
18746
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease. Some infectious diseases can be passed from person to person.
1405856
About 80% of infectious diseases are transmitted by unclean hands touching contaminated surfaces. Some viruses and bacteria can live two hours or longer on tables, doorknobs, and telephones. When workers touch their face, germs enter their body through the eyes, nose, and mouth.
691948
These maladies are caused by six types of pathogens: extracellular bacteria, intracellular bacteria, viruses, parasites, fungi and prions. Bacteria are microscopic, single-celled, prokaryotic organisms. Extracellular bacteria do not have to enter host cells to reproduce, whereas intracellular bacteria do.
242849
Fungi are eukaryotic microorganisms. ... Some fungi are capable of causing superficial, cutaneous, subcutaneous, systemic or allergic diseases. Yeasts are microscopic fungi consisting of solitary cells that reproduce by budding. Molds, in contrast, occur in long filaments known as hyphae, which grow by apical extension.