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Encircle the most appropriate answer from the following options

1.         The term metabolism is derived from:

(a) Greek word         

(b) Latin Word

(c) Italian word           

(d) French word

2.         The term Metabolism is derived from the Greek words means:

(a) Split           

(b) Change

(c) Division     

(d) Break

3.         The concept of metabolism was first of all given by:

(a) Ibn-e-Nafees

(b) Winhelm Kuhne

(c) Emil Fischer         

(d) Daniel Koshland

4.         Which among of the following statements is not true about enzymes?

(a) They act as biocatalysts   

(b) Enzymes speed up biochemical reactions

(c) They lower the activation energy 

(d) They increase the activation energy

5.         Chemically enzymes are:      

(a) Protein     

(b) Carbohydrates

(c) Lipids        

(d) Fats

6.         To which group of molecules enzymes belong?

(a) Carbohydrates      

(b) Proteins

(c) Nucleic acids        

(d) Lipids

7.         The molecules on which enzymes act are called:

(a) Substrates           

(b) Co-enzyme

(c) Proteins    

(d) Enzyme substrates complex

8.         Enzymes lower the activation energy in the ways:

(a) They may alter the shape of substrate

(b) Some enzymes do so by disrupting the charge distribution on substrates

(c) They may lower activation energy by bringing substrates in the correct orientation to react

(d) All of these

9.         Almost all the enzymes are:  

(a) Vitamins    

(b) Protein

(c) Carbohydrates      

(d) Fats

10.       When the term enzyme was used for the first time?

(a) 1874          

(b) 1876

(c) 1878          

(d) 1880

11.       Who first time used the term enzyme?         

(a) Winhelm Kuhne  

(b) Daniel Koshland

(c) Emil Fischer         

(d) Ibn-e-Nafees

12.       The catalytic region of enzyme is called:      

(a) Cofactor   

(b) Coenzyme

(c) Prosthetic group   

(d) Active site

13.       If organic cofactors are tightly bound to enzyme, they are called:

(a) Coenzymes          

(b) Prosthetic groups

(c) Both a & b 

(d) None of these

14.       If organic cofactors are loosely attached with enzyme, they are called:

(a) Coenzymes

(b) Prosthetic groups

(c) Both a & b

(d) None of these

15.       Which one is an organic cofactor?

(a) Flavin        

(b) Heme

(c) Both a & b           

(d) None of these

16.       Which of the following vitamins act as coenzyme?  

(a) Riboflavin 

(b) Thiamine

(c) Folic acid  

(d) All of these

17.       The enzymes used for the removal of protein stains from clothes?

(a) Protease  

(b) Amylase

(c) Lipase       

(d) All of these

18.       Which among the following enzymes are used in dish washing to remove resistant starch residues?

(a) Protease   

(b) Amylase

(c) Lipase       

(d) All of these

19.       The optimum temperature for the maximum working speed of human enzymes is:

(a) 35°C         

(b) 37°C

(c) 39°C         

(d) 43°C

20.       When there is an increase in temperature, the rate of enzyme catalyzed reactions:

(a) Increases 

(b) Decreases

(c) Remains constant

(d) All of these

21.       Number of discovered enzymes so far:        

(a) 1000          

(b) 1500

(c) 2000          

(d) 2500

22.       Who proposed lock and key model?

(a) Winhelm Kuhne    

(b) Daniel Koshland

(c) Emil Fischer        

(d) Ibn-e-Nafees

23.       Who proposed the induced-fit model?

(a) Winhelm Kuhne    

(b) Ibn-e-Nafees

(c) Emil Fischer         

(d) Daniel Koshland

24.       When was lock and key model proposed?   

(a) 1894          

(b) 1896

(c) 1898          

(d) 1890

25.       When was induced-fit model proposed?       

(a) 1952          

(b) 1954

(c) 1956          

(d) 1958

26.       Which of the following is not true about induced fit model?

(a) This model explains specificity of enzymes

(b) It is more acceptable model

(c) According to this model active site isn’t rigid structure

(d) Active site is molded into the required shape.

27.       Starch is broken down by an enzyme called:

(a) Lipase       

(b) Pepsin

(c) Amylase   

(d) All of these

28.       The enzyme that acts on lipids:

(a) Protease   

(b) Lipase

(c) Amylase   

(d) Pepsin

29.       The peptide bonds in proteins are broken down by:

(a) Protease  

(b) Lipase

(c) Amylase   

(d) All of these