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TLS Online TPP Program

#Question id: 4961

An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to

#XL - S Microbiology

  1. make life on land difficult for aerobic organisms.

  2. change the atmosphere from oxidizing to reducing.

  3. make it easier to maintain reduced molecules

  4. cause iron in ocean water and terrestrial rocks to rust (oxidize).

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TLS Online TPP Program

#Question id: 1659

#XL - Q Biochemistry

Which of the following Fc receptors has the highest affinity?
TLS Online TPP Program

#Question id: 1669

#XL - Q Biochemistry

What is the percentage of human peripheral blood T-cells bearing a γδ T-cell receptor?
TLS Online TPP Program

#Question id: 1670

#XL - Q Biochemistry

The T-cell receptor genes were originally identified using:
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: