28. In metabolic reactions the equilibrium constant (K) is modified by enzymes.

Question

28. In metabolic reactions the equilibrium constant (K) is modified by enzymes. a) true or b) False

57. use the term pairs from the list below to answer the questions:

a) pathogenic S strain, non-pathogenic R strain

b) deoxyribonuclease, RNA

c) non-pathogenic R strain, pathogenic S strain

d) purify, R strain

e) DNA, transforming

When cultured on a solid medium, the ______________ cells form concave colonies with smooth borders; in contrast, cells from the ____________ grow as colonies with irregular surfaces and borders. Cell-free extracts from S strain cells of S. pneumoniae were fractionated to __________________ DNA, RNA, protein, and other cell components. Each fraction was then mixed with __________________ cells of S. pneumoniae. Only the fraction containing __________________ contained a molecule capable of genetically ________ other S. pneumonia cells. Thus, __________________ cells became ________________ cells , capable of killing mice. An additional proof that _________ contains the ___________ principle, was achieved by additional treatment... with the enzyme __________, which does not break down __________.

Explanation / Answer

28. In metabolic reactions the equilibrium constant (K) is modified by enzymes.-False

equilibrium constant is dependent on reactants and products. Enzyme might play a role in increase in the reaction rate but at the end the quilibrium constant (K) is regulated by amount of reactants and prosucts.

57.When cultured on a solid medium, the _pathogenic S strain_____________ cells form concave colonies with smooth borders; in contrast, cells from the __non-pathogenic R strain__________ grow as colonies with irregular surfaces and borders.Cell-free extracts from S strain cells of S. pneumoniae were fractionated to _purify_____ DNA, RNA, protein, and other cell components.Each fraction was then mixed with ____R strain______ cells of S. pneumoniae. Only the fraction containing ____DNA__ contained a molecule capable of genetically __transforming______ other S. pneumonia cells.Thus, _____non-pathogenic R strain___ cells became __pathogenic S strain___ cells , capable of killing mice. An additional proof that DNA_________ contains the ____transforming_______ principle, was achieved by additional treatment with the enzyme deoxyribonuclease___, which does not break down __RNA________.

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