The gills of fish maintain effective oxygen uptake from water and the legs of seagulls reduce the loss of heat to the external environment by the same circulatory mechanism known as __________.

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#Question id: 562

#Biochemistry

Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?

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#Question id: 564

#Biochemistry

A good transition-state analog:

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#Question id: 565

#Biochemistry

A transition-state analog:

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#Question id: 566

#Biochemistry

The role of the metal ion (Mg2+) in catalysis by enolase is to

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#Question id: 567

#Biochemistry

Penicillin and related drugs inhibit the enzyme; this enzyme is produced by 

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#Question id: 568

#Biochemistry

Which of the following statements about allosteric control of enzymatic activity is false?