Monthly archives: February, 2015

AMU 2014 Solved Paper

1. Nistch was able to get strawberries of different shapes by (a) splitting the ovary (b) removing the perianth (c) selectively removing some carpels (d) inserting an alcohol dipped needle into the ovary. 2. Plants can be made disease resistant through (a) colchicine treatment (b) X-ray treatment (c) breeding with wild relatives (d) hormone treatment. …

AIPMT PMT NCERT Environmental Issues Questions

1. Steps taken by the Government of India to control air pollution include (a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons (b) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles (c) use of non-polluting compressed natural …

Optics – Modern Physics

OPTICS Optics is the branch of physics which deals with the study of production, propagation and nature of light. It is divided into two branches :(i) Ray optics (ii) Wave optics REFLECTION OF LIGHT It is defined as, a part of incident light is turned back into the same medium. In figure i and r …

AIPMT Previous Years Questions

1. In order to increase the excitability of a patch of neuronal cell membrane (a) the number of Na+ and K+ channels should be increased (b) the capacitance of the membrane should be increased (c) the thickness of the membrane should be reduced (d) the content of charged lipids in the membrane should be increased. (INBO 2014) …

AIPMT Molecular Biology Higher Order Thinking Skills

1. The DNA fingerprinting analysis of four family members is shown below. 2. Given the diagram of the lac operon showing an operon of inducible enzymes. Identify components and enzymes (A, B, C, D and E). (a) A-P-Galactosidase, B-Permease, C-Transacetylase, D-Repressor protein, E-Inducer (lactose) (b) A-P Galactosidase, B-Permease, C-Transacetylase, D-Inducer (lactose), E-Repressor protein (c) A-p …

AIPMT PMT MCQs Molecular Basis of Inheritance

1. Find out the sequence of binding of the following amino acyl-t-RNA complexes during translation to an m-RNA transcribed by a DNA segment having the base sequence 3′ ATACCCATGGGG 5′. Choose the answer showing the correct order of alphabets. 2. In Griffith experiment, what would be the effect of the following conditions on the mice? …

AIPMT PMT Bioreactors and Biotechnology MCQs

1. A bioreactor is (a) fermentation tank (b) culture containing radioactive isotopes (c) culture for synthesis of new chemicals (d) hybridoma. 2. Blunt ends of passenger and vehicle DNA’s are joined by (a) DNA polymerase I (b) RNA polymerase (c) DNA ligase (d) DNA polymerase III. 3. Restriction endonucleases are obtained from (a) bacteria (b) …

Recombinant DNA Technology

1. Isolation of the genetic material (DNA) • In order to cut the DNA with restriction enzymes, it needs to be in pure form, free from other macromolecules. • The DNA enclosed within the membranes has to be released by breaking the nuclear and cell membranes, along with other macromolecules such as RNA, proteins, polysaccharides …

Introduction of recombinant DNA into a suitable host

recombinant-dna-technology-hourlybook

A. Increase competence of host for transformation • Competent host is essential for transformation with the recombinant DNA. Transformation is a process by which a cell takes up the naked DNA fragment from its environment, incorporates it into its own chromosomal DNA, and finally expresses the trait controlled by the incoming DNA. • Finally, the …