Solved Gate Questions

Antibiotic Resistance Marker that CANNOT be used in a cloning vector in Gram Negative bacteria is? (GATE BT 2010)

Antibiotic Resistance Marker that CANNOT be used in a cloning vector in Gram Negative bacteria is? (GATE BT 2010)

Antibiotic Resistance Marker that CANNOT be used in a cloning vector in Gram Negative bacteria is? (GATE BT 2010) a) Streptomycin b) Ampicillin c) Vancomycin d) Kanamycin Correct Answer is (C) Vancomycin Let’s discuss the mode of action of all given antibiotics to arrive at the correct answer: 1). Streptomycin: It’s an aminoglycoside. Mode of action of all aminoglycosides involves […]

 
by · April 21, 2015 · 0 comments · Solved Gate Questions
The bacteria known to be naturally competent for transformation of DNA is ? (GATE BT 2010)

The bacteria known to be naturally competent for transformation of DNA is ? (GATE BT 2010)

The bacteria known to be naturally competent for transformation of DNA is ? (GATE BT 2010) a) Escherichia coli b) Bacillus subtilis c) Mycobacterium tuberculosis d) Yersinia pestis Correct answer is (B) Bacillus subtilis Note: Details below are mostly verbatum of the reference mentioned in the end: About Natural Competence for Transformation: Natural competence refers to the ability of some […]

 
by · April 17, 2015 · 0 comments · Solved Gate Questions
Ames test is used to determine? (GATE BT 2010)

Ames test is used to determine? (GATE BT 2010)

Ames test is used to determine? (GATE BT 2010) (a) The Mutagenicity of a chemical  (b) Carcinogenicity of a chemical (c) Both Mutagenicity and Carcinogenicity  (d) Toxicity of a chemical Correct Answer is : (A) The Mutagenicity of a chemical Ames test was developed in 1970‟s by a Biochemistry professor, Bruce Ames (hence the name), as a fast and sensitive assay to […]

 
by · April 15, 2015 · 2 comments · Solved Gate Questions
Hybridoma Technology is used to produce? (GATE BT 2010)

Hybridoma Technology is used to produce? (GATE BT 2010)

Hybridoma Technology is used to produce? (GATE BT 2010) a) Monoclonal Antibodies b) Polyclonal Antibodies c) Both Monoclonal and Polyclonal d) B Cells Correct Answer is: Monoclonal Antibodies. Hybridoma technology Hybridoma technology, discovered by G.Kohler and C.Milstein(1975) refers to a technique wherein Hybrid Cells are produced by fusion of B-lymphocytes with tumour cells (Somatic Cell Fusion). The hybrid cells so […]

 
by · April 13, 2015 · 3 comments · Solved Gate Questions
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