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enzymes1234

QuestionAnswer
enzymes are substances that cause chemical reactions to occur faster
how they work by decreasing the amount of energy needed to activate the chemical reaction
enzymes are: type of catalyst
Many of the chemical reactions that occur in cells are catalyzed by enzymes
without enzymes catalyzing metabolic reactions cells would not be able to perform metabolism quickly enough to support life.
most enzymes are like proteins
Like other proteins enzymes are produced by a cell’s ribosomes
Ribosomes produce specific enzymes to act on specific substances, called substrates
Enzymes are also important for the synthesis of new molecules
Molecules of mRNA are transcribed by RNA polymerases and later new protein molecules are synthesized based on the instructions coded in the mRNA.
The shape of an enzyme determines how it works
Most enzymes have a surface with one or more deep folds
The folds make pockets, which are called active sites
The active sites match folds in the substrate’s surface
An enzyme’s shape is key to how the enzyme functions.
If its shape is changed the enzyme may not function as well or at all
Changes in temperature and pH can affect the shape of an enzyme’s active sites.
enzymes are only able to work properly in a certain temperature and pH range
RNA polymerase is an enzyme that is essential to the process of transcription
Molecules of mRNA are transcribed by RNA polymerases and later new protein molecules are synthesized based on the instructions coded in the mRNA.
a particular enzyme fits against its substrate like puzzle pieces
If its shape is changed, the enzyme may not function as well or at all.
enzymes are proteins
Changes in temperature and pH can affect he shape of an enzyme’s active sites.
Created by: swimmorgan15
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