The depicted region contains two genes (cI and cro) and three promoters (PR, PL, and PRM), these promoters are direct the transcription such as;

a) PR and PL are is a weak promoter and only directs efficient transcription when an activator is bound just upstream

b) PR and PL are strong, constitutive promoters, they bind RNA polymerase efficiently and direct transcription without     help from an activator

c) PRM, is a weak promoter and only directs efficient transcription when an activator is bound just upstream

d) PRM are strong, constitutive promoters, they bind RNA polymerase efficiently and direct transcription without help from an activator

Which of the following from the above combination is correct ?

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#Question id: 19184

#Unit 13. Methods in Biology

Which type of PCR allows the use of permeabilized tissue?

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#Question id: 24224

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following can be synthesized from pyruvate in one step, allosterically inhibits pyruvate kinase, slowing the production of pyruvate by glycolysis

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#Question id: 33448

#Unit 1. Molecules and their Interaction Relevant to Biology

Identify the structure

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#Question id: 2710

#Unit 2. Cellular Organization

Which of the following most accurately describes a retrotransposon?

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#Question id: 29516

#Unit 6. System Physiology – Plant

Cyanide inhibits cytochrome c oxidase in the mitochondria, which blocks the electron transport chain produced  by given reaction involves enzyme a and b which are