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TLS Online TPP Program

#Question id: 3868

The sigma factor of E. coli RNA polymerase: 

#XL - Q Biochemistry

  1. associates with the promoter before binding core enzyme.

  2. combines with the core enzyme to confer specific binding to a promoter.

  3. is inseparable from the core enzyme.

  4. is required for termination of an RNA chain.

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TLS Online TPP Program

#Question id: 11586

#XL - T Zoology

Predict the effects of a drug that increases adrenocorticotropic hormone (ACTH) synthesis.
TLS Online TPP Program

#Question id: 11587

#XL - T Zoology

People experiencing chronic stress may be more likely to become sick because ________.
TLS Online TPP Program

#Question id: 11589

#XL - T Zoology

The body's reaction to parathyroid hormone (PTH), raising plasma levels of calcium, can be opposed by:
TLS Online TPP Program

#Question id: 11590

#XL - R Botany

Seed germination may require gibberellins for one of several possible steps:
TLS Online TPP Program

#Question id: 11591

#XL - R Botany

Gibberellins biosynthesis completes in almost three organelles
TLS Online TPP Program

#Question id: 11592

#XL - R Botany

Gibberellin biosynthesis precursor is____