Definitions: Biological Molecules

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What is the function of an extracellular enzyme?
To catalyse reactions outside the cell.
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What is the function of an intracellular enzyme?
To catalyse reactions inside the cell.
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What is activation energy?
Activation Energy is the amount of energy that must be applied for a reaction to proceed. Different reactions require different amounts, enzymes lower the amount needed.
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What is a risk factor?
A risk factor is a factor that increased the change of contracting a particular diesease.
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What is the definition of Metabolism?
Metabolism is the sum total of all the Biochemical Reactions taking place in the cells of an organism.
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What is a Covalent Bond?
Covalent bonds are formed when electrons are shared between atoms. These bonds are very strong. Covalently bonded atoms form new molecules.
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What is Denaturation?
Denaturation changes the tertiary structure of an enzyme such that it cannot function and its function cannot be restored. It does not change the primary structure.
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What does Optimum pH mean?
Optimum pH is the pH value at which the rate of an enzyme controlled reaction is at its maximum. Each enzyme has a specific optimum pH.
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What is a limiting factor?
A factor is described as a limiting factor in a situation where, if all other conditions are kept constant, increasing the concentration of that factor alone will increase the reaction rate.
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What is an Enzyme inhibitor?
An inhibitor is any substance or molecule that slows down the rate of an enzyme-controlled reaction by affecting the enzyme in some way.
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What is a cofactor?
A cofactor is any substance that must be present to ensure enzyme-controlled reactions take place at the appropriate rate. Some cofactors are a part of the enzyme (prosthetic groups); others affect the enzyme on a temporary basis.
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What is a Biosensor?
A Biosensor uses enzyme-controlled reactions to detect the prescense of substances in a highly sensitive and specific way. If the substance is present, the enzyme controlled reaction takes place. The Biosensor has a mechanism for revealing product.
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What is a variable?
A variable is any factor that may change and therefore affect the reaction rate. Enzyme investigations require all variables to be controlled.
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What is an anomolous result?
An anomalous result or reading is one that looks out of place with the other results.
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What is a turnover number?
The turnover number of an enzyme is the number of reactions that enzyme can catalyse per second.
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What is the function of an intracellular enzyme?

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To catalyse reactions inside the cell.

Card 3

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What is activation energy?

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Card 4

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What is a risk factor?

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Card 5

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What is the definition of Metabolism?

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