Molecular Biology MCQ Questions And Answers

Explanation: Molecular biology is the branch of biology that concerns the molecular basis of biological activity in and between cells.

Explanation: William Astbury described molecular biology in 1961 in Nature.

Explanation: Biochemistry is the study of the chemical substances and vital processes occurring in living organisms. Biochemists focus heavily on the role, function, and structure of biomolecules such as proteins, lipids, carbohydrates and nucleic acids

Explanation: True, Genetics is the study of how genetic differences affect organisms

Explanation: PCR Stands for Polymerase chain reaction .

Explanation: True, The eastern blotting technique is used to detect post-translational modification of proteins

Explanation: Mutation facilitates the change of bases within a DNA and if this change encodes for a viable amino acid which in turn may lead to the synthesis of a different protein. This protein exerts a phenotypic character to the organism which may be different from the wild type character or may generate a unique character itself, thus leading to evolution.

Explanation: Type IIIS strain means a smooth strain of pneumococci which is virulent in nature. If this strain is injected alive in a mouse it is bound to develop the disease and thus fall dead

Explanation: Found mostly in prokaryotic cells, plasmids are extra chromosomalauto replicating small circular double stranded DNA which generally carries certain genes for the advantage of bacteria, such as, antibiotic resistance.

Explanation: Generally, rRNA is of 4 types 28S, 5.8S, 18S and 5S. These subunits comprises the 80% of the total amount of RNA produced in a cell and are majorly required for translation as these rRNAs along with proteins form ribosomes which reads the codes for translation.