Viruses, antibodies, etc...

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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whiteoleander
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Viruses, antibodies, etc...

Post by whiteoleander » Fri Jun 16, 2006 12:09 am

Hi! I am working on a biology assignment with multiple choice questions. They're are three questions relating to viruses and antibodies, etc, i can't get. Any help is appreciated!

Which of the following would give only a short term immunity?
A-inherting immunity
B-injection containing antibodies
C-vaccination
D-having the disease
E-having the disease in a weakened form


AND

People are able to catch a second cold soon after recovering from a previous one because:
A-they are weak form fighitng the first infection
B-memory cells are not produced for a cold virus, so there are few antibodies ready for the second infection
C-there is no vaccine for the common cold
D-there are many different cold viruses, each requiring seperate antibodies
E-the virus has formed a resistance to the body's natural defense mechanisms



Sea water in relation to cytoplasm of a land organism is said to be:
A- mesotnic
B- hypertonic
C- hypotonic
D- isotonic
E- suptertonic

thanks!!!

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victor
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Post by victor » Fri Jun 16, 2006 6:54 am

1. which of those five that you consider have the long effect?

2. According to you, which one is the correct one?try to answer it with a reason..then I'll help you to answer it..:wink:

3. Try to cut your finger a little (this is the extreme one :evil: ) and let the blood teardrops fall right into the salt water that you've made. Then, based on the theory of osmotic pressure, you can determine which answer is the correct one..:lol:
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A: They have all the solutions.

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rye
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Post by rye » Fri Jun 16, 2006 10:56 am

i try to answer it using my opinion:

Q1 : i think the answer is b because antibody cell is not long term life cell. after all the agent that cause the ill get killed, the antibody cell will disapear for body and only memory cell still remain.

Q2 : maybe i not agree with all the choises. influenza virus easy to change of their genetic and it called it genetic variation. int change their H or N or both. so that why u can get 2nd cold because the action of antibody are specific.

Q3 : nothing in my mind to guess. huhuhuhuhhuhu...... i try to think later.

so, anybody please correct me if i'm wrong. thanks.....aligato.... :)

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Mjhavok
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Post by Mjhavok » Fri Jun 30, 2006 3:04 am

victor wrote:1. which of those five that you consider have the long effect?

2. According to you, which one is the correct one?try to answer it with a reason..then I'll help you to answer it..:wink:

3. Try to cut your finger a little (this is the extreme one :evil: ) and let the blood teardrops fall right into the salt water that you've made. Then, based on the theory of osmotic pressure, you can determine which answer is the correct one..:lol:


Number three is quite funny. A little sadistic but still funny.
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mkwaje
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Post by mkwaje » Mon Jul 03, 2006 4:17 am

he he.. Im really not sure if I will post the answers. Im pretty sure I can answer them all, but I think you have to read a bit and not rely on us to do the homework for you, try posting your answers here and I'll gladly correct them for you. You have to try at least to answer the questions; who knows you may not need our advice after all!!

keep it up.. :)

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mith
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Post by mith » Mon Jul 03, 2006 4:51 am

@mkwaje

Wow, a new member who understands the purpose of this forum, you get brownie points from me!
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mkwaje
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Post by mkwaje » Mon Jul 03, 2006 6:18 am

yeyy.. I got some brownies..lol wish I could eat them..ha ha thanks anyway. I just discovered this site. I registered a while ago and lo and behold, a very nice resource forum both for educators and students. I'll probably be visiting this forum as often as I can and contribute if I can.

On topic, hi whiteoleander, we're still waiting for your answers :P or educated guesses. At least you're resourceful, if you managed to post here, searching for the answers on the net would be a piece of cake!!

cheers :D

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