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TLS Online TPP Program

#Question id: 1749

The αβ heterodimeric form of the IL-2 receptor:

#Unit 4. Cell Communication and Cell Signaling

  1. Is downregulated on activated cells

  2. Binds IL-2 with high affinity

  3. Is found only on T-cells

  4. Uses CD45 as an α chain

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TLS Online TPP Program

#Question id: 5787

#Unit 8. Inheritance Biology

A spontaneous mutation usually originates as an error in
TLS Online TPP Program

#Question id: 5788

#Unit 8. Inheritance Biology

The ____ gene has one of the highest mutation rates known.
TLS Online TPP Program

#Question id: 5789

#Unit 8. Inheritance Biology

Which of the following defects causes ataxia telangiectasis?
TLS Online TPP Program

#Question id: 5790

#Unit 8. Inheritance Biology

The codon for leucine is CUC. How many different amino acids could possibly result from single-base substitutions?
TLS Online TPP Program

#Question id: 5792

#Unit 8. Inheritance Biology

A frameshift mutation
TLS Online TPP Program

#Question id: 5795

#Unit 8. Inheritance Biology

Which characteristic of the genetic code lowers the likelihood of mutation.