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19 terms

Unit two day five

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Metabolism
All chemical reactions occurring in microbes.
Anabolism
Synthetic metabolism, forms new chemical bonds.
Catabolism
Degradative metabolism, breaks chemical bonds.
Endergonic
Requires energy.
Exergonic
Releases surplus of energy.
Enzyme
Biological catalyst. Reduces activation energy so reactions can occur at temps compatible with life.
Active sites
Areas where substrates attach.
Lock-and-key mechanism
Fit between enzyme ad substrate.
Allosteric sites
Areas where molecules other than substrates attach.
Simple enzymes
Proteins with catalytic activity.
Conjugated enzyme
Inactive protein plus cofactor.
Cofactor
Non protein that is bound to a protein and required for protein's biological activity.
Competitive inhibitors
Chemicals that bind to active sites.
Noncompetitive inhibitors
Chemicals that bind to allosteric sites or cofactors.
Metabolic pathway
Series of chemical reactions occurring within a cell.
Exoenzymes
Secreted into environment.
Endoenzymes
Function within microbe.
Constitutive enzymes
Produced at constant rate at all times.
Inducible enzymes
Produced only when the substrate is present.