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In a model of enzyme action, the enzyme can attach only to a substrate (reactant) with a specific shape. The enzyme then changes and reduces the activation energy of the reaction so reactants can become products. The enzyme is unchanged and is available to be used again.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoenzyme can attach only to substrate with a specific shape. the enzyme then changes and reduces the activation energy of reactants can become product. The enzyme energy of reactants can become products. the enzyme is unchanged and is available to be used again
Wiki User
∙ 14y agoThe lock and key model, and the induced fit model
Wiki User
∙ 11y agoThe "Lock and Key" Model.
See related links for more information.
Wiki User
∙ 11y agobiochemistry
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What switchs on enzyme activity while what can switch off or reduce enzyme activity?
activators; inhibitors
What can change the way an enzyme acts?
Enzyme activity is affected by other molecules, temperature, chemical environment (e.g., pH), and the concentration of substrate and enzyme. Activators are molecules that encourage enzyme activity, and inhibitors are enzymes that decrease enzyme activity. Sometimes a cofactor is necessary for the enzyme to work.
What accurately describes how temperature affects enzyme activity?
Enzyme activity increases with temperature, but only up to a point.
What determine an enzymes activity?
There are several things that determine an enzyme's activity. The main determinants include the structure of the enzyme, temperature, pH and so much more.
What are 3 things that can alter enzyme activity?
1. Temperature. 2. P.H level. 3. Enzyme concentration
What can you do to regain the activity of the enzyme?
The enzyme is inactive at this point. New enzyme must be added to regain enzyme activity
What is the effect of hydrochloric acid on the enzyme activity?
Denature enzyme activity
What are the effects of physical activity on enzyme activity?
Physical activity can alter the shape of enzyme which can cause damage or may the enzyme become inactive
What are the effects of freezing on enzyme activity?
When an enzyme is frozen, it only slows down activity. Unlike boiling an enzyme, it does not stop it from working.
What switchs on enzyme activity while what can switch off or reduce enzyme activity?
activators; inhibitors
What is the effect of cold temperatures on enzyme activity?
Cold temperatures have a drastic effect on an enzyme's activity level. Cold temperatures usually dramatically slow down an enzyme's activity.
What can change the way an enzyme acts?
Enzyme activity is affected by other molecules, temperature, chemical environment (e.g., pH), and the concentration of substrate and enzyme. Activators are molecules that encourage enzyme activity, and inhibitors are enzymes that decrease enzyme activity. Sometimes a cofactor is necessary for the enzyme to work.
Which blocks enzyme activity by binding to the site of an enzyme?
inhibitor
What accurately describes how temperature affects enzyme activity?
Enzyme activity increases with temperature, but only up to a point.
Why is protein concentration necessary for accurate comparison of the enzyme activity of the fractions?
Enzyme activity sometimes reflects the amount of protein expressed in a cell--however, due to enzyme inhibitors, the enzyme activity is not always reflective of the amount of protein expressed by a cell.
What determine an enzymes activity?
There are several things that determine an enzyme's activity. The main determinants include the structure of the enzyme, temperature, pH and so much more.
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.
