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Enzymes have different optimum pH levels. Trypsin, which is found in the intestines has an optimum pH of 8-9. Higher or lower than that, its activity decreases until it reaches to a level where the H-bonds holding the protein structure is destroyed. A loss of structure means a loss of function, therefore the enzyme has been denatured. Pepsin on the other hand operates at a more acidic pH, typically 1.5-2. The enzyme, salivary amylase has an optimum pH of 7. In the body, the optimum pH of enzymes vary, the optimum temperature however is close to body temperature, which is 37C or 98.6F. Extreme heat denatures the enzyme, cold on the other hand, only INHIBITS it.
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What blocks enzyme activity by binding to allosteric site of an enzyme causing the enzyme's active site to change shape?
An allosteric inhibitor stops enzyme activity by binding to an allosteric site and causing the conformation of the enzyme to change.
What is the part of the enzyme that binds with the substrate?
The part of the enzyme where the substrate attaches itself to is known as the "active site". The active site of an enzyme is a part of the molecule that has just the right shape and functional groups to bind to one of the reacting molecules. The reacting molecule that binds to the enzyme is called the substrate.
What happens after a substrate binds to an enzyme?
Substrate a reactant molecule that binds to an enzyme. It has a specific shape that is complementary in shape to the active site of the enzyme. Product the substance or substances produced by the reaction between the enzyme and substrate.
Does the active site of an enzyme have a shape that is specfic for its given substrate?
Yes all enzymes have an active site where substance are temporarily bound. All enzymes have shape that may change during catalysis. The active site of an enzyme orients its substrate molecules, thereby promoting interaction of their reactive parts.
What is the place where the substrate attaches to the enzyme?
The active site of an enzyme is the site where substrates undergo the reaction specfic to that enzyme.
How might an amino acid change at a site distant from the active site of the enzyme alter the enzyme's substrate specificity?
The alteration of an amino acid on a site other than the active site will: change the shape of the protein.
What blocks enzyme activity by binding to allosteric site of an enzyme causing the enzyme's active site to change shape?
An allosteric inhibitor stops enzyme activity by binding to an allosteric site and causing the conformation of the enzyme to change.
A permanent change in the shape of the enzymes active site caused by high temperatures?
A permanent change in the shape of an enzyme's active site caused by high temperatures is called denaturation.
When the noncompetitive inhibitor is bonded to the enzyme?
The shape of the active site is distorted.
What is the effect of excess heat or pH on an enzyme?
it can change the shape of enzymes & active site so the enzyme is unable to work
What is the part of the enzyme that binds with the substrate?
The part of the enzyme where the substrate attaches itself to is known as the "active site". The active site of an enzyme is a part of the molecule that has just the right shape and functional groups to bind to one of the reacting molecules. The reacting molecule that binds to the enzyme is called the substrate.
Does the shape of an enzyme protein determine specificity?
Shape of an enzyme specifically shape of its active site determines enzyme specificity .
An enzyme attaches to substrates at a region known as?
The Active Site. If the protein is denatured however, the active site loses shape and the substrates don't fit in the active site (subtrates are "put together" by the enzyme at the active site).
Why their structure shape is so important (hintactive site)?
The shape of the active site is very important because it determines the efficiency of the specific enzyme. If an active site shifts, the substrate can no longer bind to an enzyme's active site, therefore causing inefficiency. We say that the enzyme is undergoing denaturation.
What determines the shape of an enzymes active site?
The active site is part of an enzyme where substrates bind and undergo a chemical reaction.
What part of the enzyme gives each enzyme its unique function?
i think it's the shape of the active site, the region where the enzyme comes into direct contact with the substrate. the shape of the active site is in turn determined by the structure of the enzyme, which is determined by the number and sequence of amino acids in the primary strucutre.(note that pH affects the shape of the active site as well.) just my guess.
What happens after a substrate binds to an enzyme?
Substrate a reactant molecule that binds to an enzyme. It has a specific shape that is complementary in shape to the active site of the enzyme. Product the substance or substances produced by the reaction between the enzyme and substrate.
