AIIMS Solved Paper 2008 (Part 8 of 20)

1. True About Carbohydrate Antigen Are All Except?

   1. Has Low Immunogenicity

   2. Memory Response Seen

   3. Causes Polyclonal B Cell Stimulation

   4. Does Not Stimulate T Cell

   Answer: b

2. Mechanism Of Action Of Pertusis Toxin Is All Except:

   1. Adp Ribosylation

   2. N/A

   3. N/A

   4. Acts Through G Alpha Subunit

   Answer: n/a

3. Which Of The Following Is True About Isotypic Variation?

   1. Subtle Amino Acid Changes Due To Allelic Differences

   2. Changes In Aa Heavy And Light Chain In Variable Region

   3. Changes In Heavy N Light Chain In Constant Region Responsible For Class And Subtype

   4. These Are Areas In Antigen That Bind Specifically To Antibody

   Answer: c

4. True About Hybridoma Technique Are A/E?

   1. Narmal Activated B Cellsmyeloma Cells

   2. Myeloma Cells Selective Mutation In Salvage Pathway, Vigorous Proliferation In Hat Medium

   3. Thymidine Kinase And Hgprt Catalyse He Salvage Pathway

   4. Aminopterin A Folic Antagonist, Inhibits De Novo Nucleotide Synthesis

   Forensic Medicine

   Answer: b

5. What Is Fallanga?

   1. Beating On Soles With Blunt Object

   2. N/A

   3. N/A

   4. N/A

   Answer: a