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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?

#XL - T Zoology

  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.

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TLS Online TPP Program

#Question id: 675

#XL - Q Biochemistry

Which statement is not true about an α-helix?
TLS Online TPP Program

#Question id: 676

#XL - Q Biochemistry

What would you expect about the formation of an α-helix for a segment of a protein chain that contains lysine approximately every fourth residue with all other residues being mostly hydrophobic?
TLS Online TPP Program

#Question id: 683

#XL - Q Biochemistry

Which factor does not help to explain why many proteins exhibit quaternary structure?
TLS Online TPP Program

#Question id: 684

#XL - Q Biochemistry

Protein subunits in a multisubunit protein are held to each other primarily by
TLS Online TPP Program

#Question id: 685

#XL - Q Biochemistry

A protein has a molecular weight of 5600 daltons; its subunits are about 1960 daltons. There are ________ protein chains per oligomer.
TLS Online TPP Program

#Question id: 686

#XL - Q Biochemistry

Which is not an example of an oligomeric protein?