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TLS Online TPP Program

#Question id: 2635

In E. coli, deleting the ribosome binding site and region 1 of the trp attenuator and leaving the remainder of the attenuator intact has which of the following effects?

#Unit 2. Cellular Organization

  1. The attenuator structure will not form, and the structural genes will be transcribed.

  2. The attenuator structure will always form, and transcription will terminate.

  3. The frequency of attenuation will still be controlled by the concentration of trp-tRNAtrp.

  4. Translation of the structural genes will not occur.

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TLS Online TPP Program

#Question id: 23887

#Unit 13. Methods in Biology

Which of the following sequences in double-stranded DNA is most likely to be recognized as a cutting site for a restriction enzyme? 
TLS Online TPP Program

#Question id: 2522

#Unit 2. Cellular Organization

The diversity of roles played by microtubules largely results from the diversity of tubulin isoforms that make up the filaments. What accounts for the diversity of roles played by microfilaments?
TLS Online TPP Program

#Question id: 27418

#Unit 1. Molecules and their Interaction Relevant to Biology

Inner monolayer of trans Golgi network is made up of
TLS Online TPP Program

#Question id: 28252

#Unit 5. Developmental Biology

The force for sperm propulsion is provided by a protein, the protein is
TLS Online TPP Program

#Question id: 24331

#Unit 4. Cell Communication and Cell Signaling

Select the CORRECT combination by matching the junctions with their principal CAMs or adhesion receptors.

Junctions

Principal CAMs or Adhesion receptors

1. Tight junctions

a. Integrins

2. Gap Junctions

b. Occludin

3. 3-D adhesions

c. Connexin

4. Plasmodesmata

d. Undefined