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#Question id: 1545


B cells negatively regulated by,

#Section 2: General Biology
  1. CD19

  2. CD22

  3. CD40

  4. CD81


Answer:- Option(s): 2


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#Question id: 14449

#Section 1: Engineering Mathematics

Find x, if   is singular

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#Question id: 14502

#Section 1: Engineering Mathematics

The chances of a person being alive who is now 35 years old, till he is 75 are 8 : 6 and of another person being alive now 40 years old till he is 80 are 4 : 5. The probability that at least one of these persons would die before completing 40 years hence is

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#Question id: 4129

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)

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#Question id: 56

#Section 2: General Biology

Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

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#Question id: 15715

#Section 6: Plant, Animal and Microbial Biotechnology

In embryogenesis a type of structure with no vascular connection with the maternal callus tissue or explants is formed

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