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TLS Online TPP Program

#Question id: 192

What is the role of the magnesium ion in kinases that require the magnesium-ATP complex to donate phosphoryl groups?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. maintain the configuration of the holoenzyme

  2. shield the charged phosphate groups of ATP

  3. produce an electrophilic attack on the substrate

  4. promote ionization of bound water

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TLS Online TPP Program

#Question id: 12907

#Unit 13. Methods in Biology

The binding of a regulatory protein or transcription factor to a specific DNA site results in a complex which may be analyzed by the technique termed as _____
TLS Online TPP Program

#Question id: 4458

#Unit 3. Fundamental Processes

What structural changes will occur at the time of transition to the open complex and  how we describe this transition in transcription,
TLS Online TPP Program

#Question id: 3781

#Unit 3. Fundamental Processes

Hershey and Chase used a DNA-based virus for their work. How might the results have been different if they had used an RNA virus?
TLS Online TPP Program

#Question id: 10795

#Unit 6. System Physiology – Plant

basic carbon skeleton of a flavonoid contains 15 carbons arranged in two aromatic rings connected by a three-carbon bridge. This structure results from two separate biosynthetic pathways:
TLS Online TPP Program

#Question id: 28587

#Unit 2. Cellular Organization

Which consensus sequences are required for the phosphorylation of serine and threonine residues by cyclin-CDK complexes?