biological chemistry

Introduction to Enzymes: Structure and Characteristics-Short Lecture Notes

Enzymes short notes

Enzymes: Structure and Characteristics
(Introduction to Enzyme Structure & Functions)

What are Enzymes?

There are thousands of chemical reactions in a living system. The chemical reactions in the cell are catalyzed by the biological catalysts called enzymes. Almost all enzymes are highly specialized proteins. (Exception: Ribozymes –Ribozymes are RNA with catalytic activity). The current post we will discuss the Characteristics of Enzymes. We will also discuss the features of a Catalyst and the concept of Activation Energy of a reaction.

What are catalysts?

Ø  The catalyst is substances that accelerate the rate of a chemical reaction.

Ø  The catalyst is not consumed or transformed by the reaction.

Ø  It will not change the equilibrium constant of the reaction.

Ø  Catalysts only change the rate to approach equilibrium constant.

Ø  Catalysts are not required in stoichiometric quantities.

Continue reading

mcq biology

Biochemistry MCQ on Enzymes: Properties and Functions

mcq on enzymes

Biochemistry MCQ – 16
(Biology / Life Sciences MCQ: Multiple Choice Questions in Biochemistry)

(Sample/Model/Practice Questions for CSIR JRF/NET Life Science Examination, ICMR JRF Exam, DBT BET JRF Exam, GATE BT and XL Exam, ICAR JRF NE Exam, PG Entrance Exam, JAM Exam, GS Biology Exam and Medical Entrance Exam)

MCQ Biology Lecture Notes

Continue reading