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Enzymes

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StatementTrue or FalseChange False to True Statement
All enzymes work with all substrates. False Enzymes are specific and each enzyme only works with one type of substrate.
There are about 20 enzymes and substrates in the human body. False There are 20 Amino Acids. Amino Acids make up proteins. There are about 30,000-50,000 proteins in the human body.
Enzymes work by changing their shape to fit each different substrate they come in contact with. False Enzymes have a specific active site shape that will only match the substrate they are designed for. This is the lock and key model.
Three factors affect the rate of enzyme action: blood type, gender, and age. False The three factors that affect enzyme activity are temperature, pH , and amount of enzyme/substrate.
The body must constantly produce enzymes because they are destroyed in each reaction. False Enzymes are not destroyed unless due to high temperature. Enzymes are re-used over and over again.
Enzymes may stop working if their shape is deformed due to a high fever. True Enzymes are denatured in temperatures higher than their optimal temperature.
Various enzymes work best in their own particular pH range. True Enzymes in the stomach prefer an acidic pH range, while enzymes in our blood prefer a neutral, slightly basic pH range.
The name for a particular enzyme will usually end with the letters "ose". The first part of the name is teh same as the substrate it works on. False The name will usually end with the letters "ase".
If more substrate is added to an enzyme, the rate of reaction will increase continuously. False If more substrate isa dded to an enzyme, the rate of reaction will increase until it is saturated and then it will level off.
Enzymes are involved in the synthesis of proteins by combining amino acids. True Enzymes are involved in many different kinds of chemical reactions like synthesis and digestion.
Created by: dlong
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