Introduction to Enzymes

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What are enzymes?

Enzymes are biological catalysts that speed up chemical reactions in living organisms.

What is the structure of an enzyme?

Enzymes are proteins composed of long chains of amino acids that fold into a specific three-dimensional shape.

How do enzymes lower the activation energy of a reaction?

Enzymes lower activation energy by providing an alternative reaction pathway and stabilizing the transition state.

What is an active site?

An active site is the specific region on an enzyme where substrate molecules bind and undergo a chemical reaction.

What is meant by 'enzyme specificity'?

Enzyme specificity refers to the ability of an enzyme to select and act on a particular substrate due to the shape of its active site.





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1. What are enzymes?

Enzymes are biological catalysts that speed up chemical reactions in living organisms.

Enzymes are hormones that regulate energy levels in cells.

Enzymes are carbohydrates that store energy.

Enzymes are lipids that form cell membranes.

2. What is the structure of an enzyme?

Enzymes are proteins composed of long chains of amino acids that fold into a specific three-dimensional shape.

Enzymes are nucleic acids with double-helix chains.

Enzymes are polysaccharides with complex sugars.

Enzymes are lipids made of fatty acids.

3. How do enzymes lower the activation energy of a reaction?

Enzymes lower activation energy by providing an alternative reaction pathway and stabilizing the transition state.

Enzymes increase the temperature of the environment to speed up reactions.

Enzymes decrease the concentration of reactants.

Enzymes elongate the duration of a reaction.

4. What is an active site?

An active site is the specific region on an enzyme where substrate molecules bind and undergo a chemical reaction.

An active site is a location where energy is stored temporarily in the enzyme.

An active site is a pore through which water enters an enzyme.

An active site is a non-specific binding area for any molecule.

5. What is meant by 'enzyme specificity'?

Enzyme specificity refers to the ability of an enzyme to select and act on a particular substrate due to the shape of its active site.

Enzyme specificity is the ability to generate different reactions with any substrate.

Enzyme specificity means the enzyme can interact with any molecule without restriction.

Enzyme specificity refers to the inability of enzymes to function outside a cell.