Complete this vocabulary exercise relating to enzymes. Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. View Available Hint(s) (denatured complex catalyst substrate cofactor active site specific)
1. An enzyme is _ when it loses its native conformation and its biological activity.
2. An enzyme is considered a because it speeds up chemical reactions without being used up.
3. An enzyme is considered _ because of its ability to recognize the shape of a particular molecule.
4. A , such as a vitamin, binds to an enzyme and plays a role in catalysis.
5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES)
6. A substrate binds to an enzyme at the _, where the reaction occurs.
7. In a catalyzed reaction a reactant is often called a __.

Enzymes are proteins with catalytic functions to accelerate natural processes. Their tridimentional structure help them accomplish their functions. 1. Denatured /2. Catalytic protein /3. Specific molecule /4. Cofactor /5. Complex /6. Active Site /7. Substrate

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Enzymes are catalytic intracellular molecules or polypeptides that accelerate different natural chemical reactions.

They have specific binding sites to substrate molecules and turn them into product molecules.

Enzymes are in charge of catalyzing cell metabolism.

Enzymes, like all proteins, are polypeptidic molecules. They need to get an accurate tridimensional structure to accomplish their function.

They have a limited temperature and pH levels at which they denaturalize.

According to the place where they accomplish their function, enzymes can be called

• Plasm-specific enzymes ⇒ Their action field is the plasma ⇒ These are exportation proteins.

• Secreted or Exocyto enzymes ⇒ Their action field are tissues placed far away from where they were produced and released (for instance, the pancreas secretes and releases enzymes that accomplish their function in the duodene) ⇒ These are exportation proteins.

• Intracellular or Endocyto enzymes ⇒ All enzymes that accomplish their function within the same cell that synthesizes them ⇒ These are intracellular proteins.

Complete sentenses:

1. An enzyme is _denatured_ when it loses its native conformation and its biological activity.

2. An enzyme is considered a _catalytic protein_ because it speeds up chemical reactions without being used up.

3. An enzyme is considered _a specific molecule_ because of its ability to recognize the shape of a particular molecule.

4. A _cofactor_, such as a vitamin, binds to an enzyme and plays a role in catalysis.

5. When properly aligned, the enzyme and substrate form an enzyme-substrate (ES) _complex_

6. A substrate binds to an enzyme at the _ active site_, where the reaction occurs.

7. In a catalyzed reaction a reactant is often called a _substrate_.

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