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Provide detail accounts of why some pathogens are more virulent than others (3 pts)...

Question

Provide detail accounts of why some pathogens are more virulent than others (3 pts)

Provide detail accounts of why some pathogens are more virulent than others (3 pts)



Answers

Identify some ways that pathogens can breach the physical barriers of the innate immune system.

This question asks, Why are most vascular pathogens poorly communicable from person to person? So maybe a more common term to describe what this book is calling vascular pathogens is blood born pathogens, so blood borne pathogens could be transmitted when blood or body fluids from an infected person entered another person's body. This often occurs. Be a needle sticks. Human bites cuts, abrasions or through mucous membranes, so any body fluid with blood is, um, potentially infectious. So the fact that you're required Teoh break the physical barrier of the body and have contact with the other person's body fluids makes it so that these are more difficult to transmit. So I'll put the biggest barrier to these is actually your skin. Um, like I said, these air difficult to transmit from person to person because they require specific contact with contaminated body fluids, typically involving crossing the barrier. That is your skin. Um, particularly. This also means that aerosols are not an effective way at transmitting these diseases.

Bacteria are single celled per carry out organisms. Unlike Eukaryotic organisms, they like a necklace. Instead, their DNA is clustered into a single chromosome at the center of their cell, as well as a numerous class minutes, which are essentially small rings of DNA. Genes that promote resistance to antibiotics are often located in a plasmid. Additionally, bacteria sometimes happen Phyllis, which is a hollow appendage that bacteria used for lateral gene transfer in other words, forgiving positives to other bacteria. So more of the populations has the gene necessary to survive. The cell wall in bacteria is sometimes surrounded by a capsule made of a sticky material. This capsule helps bacteria adhere to services on the host. It also makes it harder for if I go psychosis to occur from Bre, which are stiff. Fibres also promote sticking to a host. Finally, motile bacteria often have a flood Jelen, which is a long row kating appendage that promotes movement

We are asked to explain how specific pathogens can override the hosts immune system or use it to their advantage and were given to different pathogens. The 1st 1 are the pathogenic strains of Staphylococcus. The second is enveloped viruses, so let's talk about staff. First Staff releases a lot of toxins that puncture cells and clears the way for infection. And so these toxins kill different types of immune cells by selectively binding to specific receptors. Uh, the staff releases toxins that punk yourselves and clear the way for infections. Now let's talk about enveloped viruses. Enveloped viruses disable innate immune responses in dendritic cells by direct activation of the TEM receptors.

Some microbes are beneficial. For example, E. Coli helps to break down fiber, and some foods, such as yogurt, are formed by bacteria and are good for good health.


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