The history of Insulin

It shows how insulin was used and how it was discovered by whom and its problems and also how the problems where resolved so that human life could be better.

PhajEjHmong8. 2012. The history of insulin. Accessed on 13th April, 2013.




Gives information on hemoglobin, what it is and it’s function.


Khanacademy. 2010. Hemoglobin. Accessed 13th April, 2013.


The cell theory

It explains how the cell theory came about and gives a little history on the scientists.
Scientific discovery isn’t as simple as one good experiment. The weird and wonderful history of cell theory illuminates the twists and turns that came together to build the foundations of biology.

Royal-Woods Lauren , Augenblick Studioeference.2012.The wacky history of cell theory. http: Accessed on April 13th, 2013.


Enzymes MCQ


Have a go its only 10 questions

1. What are enzymes?

A. Biological catalyst that speed up chemical reactions by providing an alternate pathway of higher activation energy

B. Any molecule that speed up chemical reactions by providing an alternate pathway 

C. A biological molecule that slows the rate of reaction

D. An alternate pathway

E. Biological catalyst that speed up chemical reactions by providing an alternate pathway of higher activation energy

2. What are the three distinctive features of an enzyme:

1. Catalytic power

2. Specificity 

3. Alternate

4. Regulation

A. 1,2,3 and 4 only

B. 1 and 2

C. 1 only

D. 2 and 3 only

E.1, 2 and 4 only

3. The highest energy arrangement of atoms that is intermediate in structure between the structure of the reactants and the structure of the products is the 

A.Free Energy

B.Transition state



E. Activation energy

4. Which one best describes activation energy?

A. Low energy

B. The minimum amount of energy for the reaction to occur

C. The maximum amount of energy for the reaction to occur

 D. The energy for a reaction

E. A different pathway

5. In mixed inhibition where does the inhibitor bind?

A.Substrate active site

B. Enzyme active site

C. To the substrate

D. Same site as the subastrate

E. Free enzyme or Enzyme- substrate complex

6. Which Lineweaver-Burk plot is for mixed inhibition?



B. ImageC. Image


E. Image


7. What increase the rate of reaction but denatures the enzyme as well?

A. Substrate concentration

B. Enzyme concentration

C. Temperature

D. Time

E. Speed

8. Increasing substrate concentration increases the rate of the reaction until the enzyme’s active site becomes __________ .

A. Saturated

B. Active

C. Slow

D. Fast

E. Inhibited

9.In which type of inhibition does the inhibitor bind to the enzyme’s active site?

A. Non-Competitive 

B. Mixed 

C. Uncompetitive

D. Competitive

E. All of the above

10. Non-Competitive inhibition cannot be overcome by increasing

A. Temperature

B. Substrate concentration

C. Enzyme concentration

D. pH

E. Volume 


Glycolysis jigsaw puzzle game



To solve the glycolysis puzzple follow the link below.

<div style=’font-size:10px; font-family:Arial, Helvetica, sans-serif; color:#000;’><a href=’; target=’_blank’ title=’Glycolysis jigsaw puzzle game’>Glycolysis jigsaw puzzle game</a> » <a href=’; title=’free online jigsaw puzzles’ target=’_blank’>free online jigsaw puzzles</a></div>


To play the Enzymes Hangman game, follow the link below…and have fun while learning!


<div style=’font-size:10px; font-family:Arial, Helvetica, sans-serif; color:#000;’><a href=’; target=’_blank’ title=’Enzymes hangman game’>Enzymes hangman game</a> » <a href=’; title=’make hangman’ target=’_blank’>make hangman</a></div>

Past Paper 2



University of Kerala. 20th October, 2013.Kerala,India. Accessed on 12th April,2013.

 Most the question below are relevant to Biochemistry and it helped as a revision past paper.
B.Sc. Supplementary Degree Examination, August 2009
Paper – II : General Biochemistry
Time : 3 Hours Max. Marks : 55

Answer any ten questions. Each question carries 2 marks.

1. List the organelles in an animal cell.

2. What is a Stereoisomer ?

3. How will you generate glucosazone ?

4. What are hetero polysaccharides ? Give two examples.

5. List Vit-B compounds.

6. Explain Iodine number.

7. How are Prostaglandins and Leukotrienes formed ?

8. What is optical activity of a compound ?

9. Write the structure of glutathione.

10. What enzymes and conditions will you use to hydrolyze proteins ?

11. Identify factors contributing to secondary structure of proteins.

12. What are lipases ?

13. What is meant by annealing ?

Answer any three questions. Each question carries five marks.

14. Discuss the products of arachidonic acid metabolism.

15. Identify the differences between glycoproteins and proteoglycans.

16. Write the steps in the synthesis of a sample peptide.

17. Write on DNA double helix.

18. Write on the significance of Km and Vmax. (3×5=15 Marks)

Answer any two questions. Each question carries ten marks.

19. Discuss on the factors affecting enzyme function.

20. How will you purify a protein and determine its aminoacid composition ?

21. Compare the mode of action of penicillin, streptomycin, tetracycline andchloramphenical antibiotics. (2×10=20 Marks)


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