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TLS Online TPP Program

#Question id: 2673

For a repressible operon to be transcribed, which of the following must be true?

#Unit 2. Cellular Organization

  1. A corepressor must be present.

  2. RNA polymerase must bind to the promoter, and the repressor must be inactive.

  3. RNA polymerase and the active repressor must be present.

  4. RNA polymerase cannot be present, and the repressor must be inactive.

More Questions
TLS Online TPP Program

#Question id: 1732

#Unit 4. Cell Communication and Cell Signaling

Protein tyrosine kinase activity following T-cell stimulation:
TLS Online TPP Program

#Question id: 1733

#Unit 4. Cell Communication and Cell Signaling

The early increase in phospholipase Cγ1 activity following T-cell stimulation:
TLS Online TPP Program

#Question id: 1734

#Unit 4. Cell Communication and Cell Signaling

The nuclear AP-1 site responsible for 90% of IL-2 enhancer activity binds:
TLS Online TPP Program

#Question id: 1735

#Unit 4. Cell Communication and Cell Signaling

In the immunological synapse:
TLS Online TPP Program

#Question id: 1736

#Unit 4. Cell Communication and Cell Signaling

Lipopolysaccharide (LPS) from Gram-negative bacteria is:
TLS Online TPP Program

#Question id: 1737

#Unit 4. Cell Communication and Cell Signaling

The carrier T-cell epitope on a thymus-dependent antigen: