Enzyme Structure and Function

 

1. In Ex 1 observe the diagram of the enzyme reaction.

The enzyme is: An enzyme is a biocatalyst which increase the rate of a chemical reaction without changing itself in the whole process. In an organism most of the cellular processes are mediated by enzymes.

The substrate is: It is an molecule upon which an enzyme acts and give rise to product. Enzymes are highly specific for substrates. when an enzyme binds to a specific substrate then it forms enzyme-substrate complex.  

The gas needed for this reaction:  

The product is:  

 

2. Explain why fruit turns brown upon exposure to air.  

 

3. Explain how enzymes function in the enzyme-substrate complex.

 

4. In Ex 1 a color intensity scale is created for enzyme activity. Using the numbers on the color intensity scale record the data of the solution in each test tube at five and ten minutes.

 

Time

(min) Tube S1

Potato Extract + Catechol Tube S2

Potato Extract + Water Tube S3

Catechol + Water

0 YELLOW MILKY CLEAR TO MILKY

5 YELLOW LIGHT PINK CLEAR TO MILKY

10 ORANGE PINK CLEAR

 

 

5.A brownish-amber color indicates the presence of:  

 

 

6.Which two solutions need to be present to detect benzoquinone?  

a.  

b.