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TLS Online TPP Program

#Question id: 692

 In the alpha helix the hydrogen bonds:

#XL - Q Biochemistry

  1. are roughly parallel to the axis of the helix.

  2. are roughly perpendicular to the axis of the helix.

  3. occur mainly between electronegative atoms of the R groups.

  4. occur only between some of the amino acids of the helix.

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TLS Online TPP Program

#Question id: 1671

#XL - Q Biochemistry

A chromosome on which T-cell receptor α chain gene rearrangement has occurred lacks which of the following gene segments?
TLS Online TPP Program

#Question id: 1672

#XL - Q Biochemistry

Using only random VDJ recombination, from 40 V, 23 D, and 6 J gene segments, what are the number of possible variable regions of an antigen receptor molecule?
TLS Online TPP Program

#Question id: 1673

#XL - Q Biochemistry

N-region insertion is associated with the expression of:
TLS Online TPP Program

#Question id: 1674

#XL - Q Biochemistry

Which of the following statements is TRUE of receptor editing?
TLS Online TPP Program

#Question id: 1675

#XL - Q Biochemistry

Somatic hypermutation of V genes:
TLS Online TPP Program

#Question id: 1676

#XL - Q Biochemistry

NK cells lack receptors with: