Book Title:
Author(s):
Some examples from this set of practice questions
1.
What is an immune response?
Answer: Is the body\'s reaction to a foreign antigen.
2.
What are antigens?
Answer: Antigens are molecules (usually proteins or polysaccharides) found on the surface of cells.
3.
Explain the stages of Phagocytosis
Answer: - A phagocyte recognises the antigens on a pathogen. - They cytoplasm of the phagocyte moves round the pathogen, engulfing it. This may be made easier by the presence of opsonins. - The pathogen is now contained in a phagosome ( a type of vesicle) in the cytoplasm of the phagocyte. - A lysosome (an organism that contains digestive enzymes) fuses with the phagosome. The enzymes break down the pathogen. - The phagocyte then presents the pathogen\'s antigens. It sticks the antigens on it\'s surface to activate other immune system cells. When a phagocyte does this it is acting as an antigen-presenting cell (APC).
4.
What are Opsonins?
Answer: Molecules in the blood that attach to foreign antigens to aid phagocytosis.
5.
What are Neutrophils?
Answer: A type of phagocyte.
6.
What do Neutrophils do?
Answer: They\'re the first white blood cells to respond to a pathogen inside the body. Neutrophils move towards a wound in response to signals from cytokines. The cytokines are released by cells at the site of the wound.
7.
What are cytokines?
Answer: Proteins that act as messenger molecules.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
You can quickly pay through credit card for the summaries. There is no membership needed.
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Stuvia is a marketplace, so you are not buying this document from us, but from seller Karanmaan. Stuvia facilitates payment to the seller.
No, you only buy these notes for £0.00. You're not tied to anything after your purchase.
4.6 stars on Google & Trustpilot (+1000 reviews)
98390 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now
