Yee+Teng2

Yee Teng

1. Describe the difference between leukocyte and white blood cells.  The difference between leukocyte and white blood cells are that leukocyte is another general name for white blood cells, and as for white blood cells they are the antibodies that track down for pathogens/ bacteria. In the leukocyte there is lots of different white blood cells, such as the T-cells and the B-cells.

2. The term proteins are frequently used in the study of immunology. Explain the term/concept proteins.  Proteins in the study of immunology is the enzymes and the antibodies. In every cells they have a cover of   proteins   membrane proteins that is meant to help our immune system is someways. Antibodies are found in the white blood cells, and they help to killed off bacteria that are harmful.

3. Explain why the Black Death virus, which has caused millions of deaths, was deadly using concepts of immunology.  That is because when the Black Death happens, our bodies immune system doesn't recognize the virus that is being sprea d at such a fast speed and one thing the virus do is to pass it on to another person that came in contact with it. The virus went from one place to another so fast that doctors in that time haven't have the time to figure out a cure to it, and not just about the doctors it is about how our immune system work to respond to it. Since the Black Death had caused million of death that means that the virus is quite strong, and our immune system can't fight back because of it.

4. The recent bird flu virus, H7N9, has a 20% fatality rate if one is infected. a) what does it mean - 20% fatality rate?   It means that if you ever got infected by the recent bird ful virus(H7N9), you may have 20% of chance dying. So if you ever got one, 80% of chances is waiting for you to get cured.

b) How is this virus different from a common flu virus? This new virus is different from a common flu is because your immune system haven't seen this virus before and as for the common flu. Your body already have a memory cells on it. That means that if you ever got a common flu again, you probably won't get it as much as the first time you had it.

c) Are there ways to prepare our body immune system against such fatal, deadly virus?

d) The bird flu virus wasn't infectious to humans before; explain why it could become viral and harmful to humans.

e) Right now, the flu is unable to infect a person through human to human transmission; if it can infect through human to human transmissions, what could have changed in the virus?