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TLS Online TPP Program

#Question id: 1054

During attachment of phage to E. coli, the phage

#Unit 4. Cell Communication and Cell Signaling

  1. actively seek out the bacteria.

  2. randomly bump into the bacteria.

  3. attach to proteins or carbohydrates on the bacterial surface.

  4. randomly bump into the bacteria AND attach to proteins or carbohydrates on the bacterial surface.

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TLS Online TPP Program

#Question id: 2634

#Unit 2. Cellular Organization

Tryptophan, the end-product of the enzymes encoded by the trp operon, therefore acts as a co-repressor and inhibits its own synthesis through:
TLS Online TPP Program

#Question id: 2637

#Unit 2. Cellular Organization

Which of these operons is anabolic?
TLS Online TPP Program

#Question id: 2638

#Unit 2. Cellular Organization

Which of these systems give the best mode for turning trp operon off?
TLS Online TPP Program

#Question id: 2639

#Unit 2. Cellular Organization

A Lac repressor is a tetramer repressed when bound to the inducer. The trp repressor is a ____________________
TLS Online TPP Program

#Question id: 2640

#Unit 2. Cellular Organization

Which of these properties do not agree with trp operon attenuator?
TLS Online TPP Program

#Question id: 2641

#Unit 2. Cellular Organization

Which segments of the attenuator together form the repression loop?