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TLS Online TPP Program

#Question id: 933

Industrially, nitrogen for use in fertilizers is converted to ammonia by ________.

#XL - Q Biochemistry

  1. a simple, energy efficient reaction of N2 with water

  2. a cryogenic (very low temperature) process between N2 and H2

  3. special catalysts which drive the reduction of N2 by H2

  4. a reaction between nitric acid and hydrogen gas

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TLS Online TPP Program

#Question id: 1753

#XL - Q Biochemistry

In the germinal center, B-cells become memory cells under the influence of:
TLS Online TPP Program

#Question id: 1754

#XL - Q Biochemistry

High affinity B-cell clones in mammals are usually generated by:
TLS Online TPP Program

#Question id: 1755

#XL - Q Biochemistry

Prior to class switching, B-cells express:
TLS Online TPP Program

#Question id: 1756

#XL - Q Biochemistry

Which of the following is the cytokine that is most involved in the class switch to IgE production?
TLS Online TPP Program

#Question id: 1757

#XL - Q Biochemistry

What is the first event following the production of CH germline transcripts by immunoglobulin genes?
TLS Online TPP Program

#Question id: 1758

#XL - Q Biochemistry

The specificity of antibody secreted by a B-cell may not be the same as that of the surface Ig of the clonal parent because of: