Among the newly discovered small noncoding RNAs, one type helps to reestablish ethylation patterns during gamete formation and blocks expression of some transposons. Which of the following types of RNA is responsible for this function?

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#Question id: 411

#Unit 1. Molecules and their Interaction Relevant to Biology

The reaction ATP -> ADP + Pi is an example of a reaction.

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#Question id: 412

#Unit 1. Molecules and their Interaction Relevant to Biology

All of the following contribute to the large, negative, free-energy change upon hydrolysis of “high-energy” compounds except:

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#Question id: 413

#Unit 1. Molecules and their Interaction Relevant to Biology

The hydrolysis of ATP has a large negative DG'°; nevertheless it is stable in solution due to:

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#Question id: 414

#Unit 1. Molecules and their Interaction Relevant to Biology

The hydrolysis of phosphoenolpyruvate proceeds with a DG'° of about –62 kJ/mol. The greatest contributing factors to this reaction are the destabilization of the reactants by electostatic repulsion and stabilization of the product pyruvate by:

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#Question id: 415

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following compounds does not have a large negative free energy of hydrolysis?

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#Question id: 416

#Unit 1. Molecules and their Interaction Relevant to Biology

The immediate precursors of DNA and RNA synthesis in the cell all contain: