TESTfunda - CAT Question of the Day 01-Jan-12

	If you're having trouble viewing this email, see the Question of the Day and Tip of the Day on the Web.

	01-Jan-12 TestFunda Home | Sign up for Newsletters | Feedback CAT Question of the Day The antigens on cell surfaces are processed by the cells of the body's immune system depending on their antigenicity. Specifically, the antigenicity of the HLA surface proteins depends on whether they are one's own proteins (self-antigens) or whether they are the foreign proteins of another person (non-self-antigens). The HLA proteins on a person's own cells are recognized by their immune system as such, while non-self-antigens will incite an immune response. Originally, MHC proteins were considered of interest only in regards to organ transplantation because transplants in which the donor and recipient cells contained different MHC proteins resulted in organ rejection unless the immune system was suppressed. Further studies have shown MHC to actually have a much larger role in the immune system than just organ transplantation. The MHC region of genes contains extremely high levels of gene density and diversity; genetic variation within this region plays a vital role in susceptibility to autoimmune, infectious, and other diseases. What is the role of the MHC in our body? OPTIONS     1) MHCs are important in determining if a person's body will accept a foreign organ transplant.   2) MHCs and their antigenicity decide whether a person will accept another human being's romantic advances.   3) MHC proteins need to be similar between donor and patient for a successful organ transplant, and MHCs also help determine whether a person will fall prey to autoimmune and infectious diseases.   4) MHCs decided whether or not your body will be infected when attacked by autoimmune and infections disease-causing pathogens.   5) MHCs have a very insignificant role to play in our body. discuss | yesterday's solution | more questions Tip of the Day While solving the DI and QA sections, easy questions but with tedious calculations require prior attention. Do not leave them towards the end. more tips Last year's Question of the day (31-Dec-10) Rahul and Vicky start from point A on their respective bikes at a speed of x km/hr and reach point B. From point B Rahul comes back to point A at a speed of y km/hr but requires 1 hour less than the time required by him in travelling from point A to B. Also from point B, Vicky moves to point C which is 100 kms away from point A ( points A B and C are collinear) also at a speed of y km/hr. Vicky then decides to return. While returning, from point C to B he drives at a speed of x km/hr and from B to A he drives at a speed of y km/hr, he requires 4 hours to reach from point C to A. Determine the value of x, if Vicky requires the same time in travelling from point A to C as he does from C to A. OPTIONS     1) 20 km/hr   2) 40 km/hr   3) 33.33 km/hr   4) 10 km/hr   5) Cannot be determined discuss TestFunda.com - LEARN with THE LEADER in Online MBA Test Prep Demo Lessons   |   Take a Free Test   |   Buy Courses   |   Fun Learning Games   |   100-Percentilers About TestFunda.com - TestFunda is backed by www.ZeusLearning.com. 4 IIT-IIM graduates form the Management Team. - The 85+ member team has vast experience in MBA Coaching and Computer-Based Training and Testing. - For 9 years Zeus has created award-winning courseware for companies like Discovery Channel, Reader's Digest, Texas Instruments, Pearson Education. - The TestFunda Advisory Board comprises CEOs and MDs of international educational companies. About This Newsletter You received this email because you have registered with www.TestFunda.com. If you do not want to receive this email or want to sign up for other newsletters from TestFunda  click here. Please do not reply to this mail. Mails sent to this account will not be monitored. Post your comments and solutions under the Question of the Day forum. Problems getting this mail? To get this mail in your inbox, add noreply@testfunda.com to your contact list.       UNSUBSCRIBE / SUBSCRIBE | ABOUT | WHY TESTFUNDA | FAQ | PRIVACY | SUPPORT | CONTACT | DISCUSS   © Enabilon Learning Private Limited. All rights reserved