171054
Cultivation of Bt cotton has been much in the news. The prefix Bt means :
1 Barium-treated cotton seeds
2 Bigger thread variety of cotton with better tensile strength
3 produced by biotechnology using restriction enzymes and ligases
4 carrying an endotoxin gene from Bacillus thuringiensis
Explanation:
Bt cotton, Bt-tobacco, Bt-tomato etc are transgenic plants having Bt-2 gene encoding Bt-toxin (Ex- thurioside). - Bt toxin gene has been isolated from a bacteria Bacillus thuringiensis. - The plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars, Bag worms, canker worms, gypsy worm etc.
Haryana PMT-2004
Biotechnology : Principles and Processes
171060
Penicillin is produced commercially from
1 Penicillium notatum
2 P. chrysogenum
3 P. citrinum
4 P. rubrum
Explanation:
Penicillium chrysogenum has been used industrially to produced penicillium. - Penicillium chrysogenum is a mold that is widely distributed in nature and is often found living on foods and in indoor environment. It has rarely been reported as cause of Human disease. It has the source of several $\beta$-lactam antibiotics, most significantly penicillin.
CG PMT-2010
Biotechnology : Principles and Processes
171061
Antibiotic which inhibits cell wall synthesis in bacteria
1 Chloramphenicol
2 Erythromycin
3 Penicillin
4 Tetracycline
Explanation:
Penicillin have been shown to inhibit bacteria cell wall synthesis, and interact with penicillin binding protein's leading to bacterial lysis. Penicillin first discovered by Dr. Alexander Fleming. Penicillin were the first antibiotics discovered as natural products from the mould pencillium. - All pencillin derivatives produce their bactericidal effects by inhibition of bacterial cell wall synthesis. Specifically, the cross linking of peptide on the muco saccharide, chain's is prevented. If cell walls allow water to flow into the cell causing it to burst.
CG PMT-2010
Biotechnology : Principles and Processes
171062
The enzyme employed for amplification of DNA during PCR is commercially obtained from
1 Streptococcus pyrogenes
2 Bacillus Licheniformis
3 Trichoderma reesi
4 Thermus aquaticus
Explanation:
Heat stable DNA polymerase, i.e. Taq polymerase (Isolated from Thermus acquaticus) are commonly used in polymerization of nucleotides during polymerase chain reaction. - In case of Taq polymerase, the optimum temperature for polymerization is $70-75^{\circ} \mathrm{C}$ because the base pairing between the primase and template DNA is much more specific at this temperature than that of $37^{\circ} \mathrm{C}$ (optimum temperature for E. coli DNA polymerase).
171054
Cultivation of Bt cotton has been much in the news. The prefix Bt means :
1 Barium-treated cotton seeds
2 Bigger thread variety of cotton with better tensile strength
3 produced by biotechnology using restriction enzymes and ligases
4 carrying an endotoxin gene from Bacillus thuringiensis
Explanation:
Bt cotton, Bt-tobacco, Bt-tomato etc are transgenic plants having Bt-2 gene encoding Bt-toxin (Ex- thurioside). - Bt toxin gene has been isolated from a bacteria Bacillus thuringiensis. - The plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars, Bag worms, canker worms, gypsy worm etc.
Haryana PMT-2004
Biotechnology : Principles and Processes
171060
Penicillin is produced commercially from
1 Penicillium notatum
2 P. chrysogenum
3 P. citrinum
4 P. rubrum
Explanation:
Penicillium chrysogenum has been used industrially to produced penicillium. - Penicillium chrysogenum is a mold that is widely distributed in nature and is often found living on foods and in indoor environment. It has rarely been reported as cause of Human disease. It has the source of several $\beta$-lactam antibiotics, most significantly penicillin.
CG PMT-2010
Biotechnology : Principles and Processes
171061
Antibiotic which inhibits cell wall synthesis in bacteria
1 Chloramphenicol
2 Erythromycin
3 Penicillin
4 Tetracycline
Explanation:
Penicillin have been shown to inhibit bacteria cell wall synthesis, and interact with penicillin binding protein's leading to bacterial lysis. Penicillin first discovered by Dr. Alexander Fleming. Penicillin were the first antibiotics discovered as natural products from the mould pencillium. - All pencillin derivatives produce their bactericidal effects by inhibition of bacterial cell wall synthesis. Specifically, the cross linking of peptide on the muco saccharide, chain's is prevented. If cell walls allow water to flow into the cell causing it to burst.
CG PMT-2010
Biotechnology : Principles and Processes
171062
The enzyme employed for amplification of DNA during PCR is commercially obtained from
1 Streptococcus pyrogenes
2 Bacillus Licheniformis
3 Trichoderma reesi
4 Thermus aquaticus
Explanation:
Heat stable DNA polymerase, i.e. Taq polymerase (Isolated from Thermus acquaticus) are commonly used in polymerization of nucleotides during polymerase chain reaction. - In case of Taq polymerase, the optimum temperature for polymerization is $70-75^{\circ} \mathrm{C}$ because the base pairing between the primase and template DNA is much more specific at this temperature than that of $37^{\circ} \mathrm{C}$ (optimum temperature for E. coli DNA polymerase).
NEET Test Series from KOTA - 10 Papers In MS WORD
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Biotechnology : Principles and Processes
171054
Cultivation of Bt cotton has been much in the news. The prefix Bt means :
1 Barium-treated cotton seeds
2 Bigger thread variety of cotton with better tensile strength
3 produced by biotechnology using restriction enzymes and ligases
4 carrying an endotoxin gene from Bacillus thuringiensis
Explanation:
Bt cotton, Bt-tobacco, Bt-tomato etc are transgenic plants having Bt-2 gene encoding Bt-toxin (Ex- thurioside). - Bt toxin gene has been isolated from a bacteria Bacillus thuringiensis. - The plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars, Bag worms, canker worms, gypsy worm etc.
Haryana PMT-2004
Biotechnology : Principles and Processes
171060
Penicillin is produced commercially from
1 Penicillium notatum
2 P. chrysogenum
3 P. citrinum
4 P. rubrum
Explanation:
Penicillium chrysogenum has been used industrially to produced penicillium. - Penicillium chrysogenum is a mold that is widely distributed in nature and is often found living on foods and in indoor environment. It has rarely been reported as cause of Human disease. It has the source of several $\beta$-lactam antibiotics, most significantly penicillin.
CG PMT-2010
Biotechnology : Principles and Processes
171061
Antibiotic which inhibits cell wall synthesis in bacteria
1 Chloramphenicol
2 Erythromycin
3 Penicillin
4 Tetracycline
Explanation:
Penicillin have been shown to inhibit bacteria cell wall synthesis, and interact with penicillin binding protein's leading to bacterial lysis. Penicillin first discovered by Dr. Alexander Fleming. Penicillin were the first antibiotics discovered as natural products from the mould pencillium. - All pencillin derivatives produce their bactericidal effects by inhibition of bacterial cell wall synthesis. Specifically, the cross linking of peptide on the muco saccharide, chain's is prevented. If cell walls allow water to flow into the cell causing it to burst.
CG PMT-2010
Biotechnology : Principles and Processes
171062
The enzyme employed for amplification of DNA during PCR is commercially obtained from
1 Streptococcus pyrogenes
2 Bacillus Licheniformis
3 Trichoderma reesi
4 Thermus aquaticus
Explanation:
Heat stable DNA polymerase, i.e. Taq polymerase (Isolated from Thermus acquaticus) are commonly used in polymerization of nucleotides during polymerase chain reaction. - In case of Taq polymerase, the optimum temperature for polymerization is $70-75^{\circ} \mathrm{C}$ because the base pairing between the primase and template DNA is much more specific at this temperature than that of $37^{\circ} \mathrm{C}$ (optimum temperature for E. coli DNA polymerase).
171054
Cultivation of Bt cotton has been much in the news. The prefix Bt means :
1 Barium-treated cotton seeds
2 Bigger thread variety of cotton with better tensile strength
3 produced by biotechnology using restriction enzymes and ligases
4 carrying an endotoxin gene from Bacillus thuringiensis
Explanation:
Bt cotton, Bt-tobacco, Bt-tomato etc are transgenic plants having Bt-2 gene encoding Bt-toxin (Ex- thurioside). - Bt toxin gene has been isolated from a bacteria Bacillus thuringiensis. - The plants are resistant for more than 140 species of insects including common cabbage worm, tent caterpillars, Bag worms, canker worms, gypsy worm etc.
Haryana PMT-2004
Biotechnology : Principles and Processes
171060
Penicillin is produced commercially from
1 Penicillium notatum
2 P. chrysogenum
3 P. citrinum
4 P. rubrum
Explanation:
Penicillium chrysogenum has been used industrially to produced penicillium. - Penicillium chrysogenum is a mold that is widely distributed in nature and is often found living on foods and in indoor environment. It has rarely been reported as cause of Human disease. It has the source of several $\beta$-lactam antibiotics, most significantly penicillin.
CG PMT-2010
Biotechnology : Principles and Processes
171061
Antibiotic which inhibits cell wall synthesis in bacteria
1 Chloramphenicol
2 Erythromycin
3 Penicillin
4 Tetracycline
Explanation:
Penicillin have been shown to inhibit bacteria cell wall synthesis, and interact with penicillin binding protein's leading to bacterial lysis. Penicillin first discovered by Dr. Alexander Fleming. Penicillin were the first antibiotics discovered as natural products from the mould pencillium. - All pencillin derivatives produce their bactericidal effects by inhibition of bacterial cell wall synthesis. Specifically, the cross linking of peptide on the muco saccharide, chain's is prevented. If cell walls allow water to flow into the cell causing it to burst.
CG PMT-2010
Biotechnology : Principles and Processes
171062
The enzyme employed for amplification of DNA during PCR is commercially obtained from
1 Streptococcus pyrogenes
2 Bacillus Licheniformis
3 Trichoderma reesi
4 Thermus aquaticus
Explanation:
Heat stable DNA polymerase, i.e. Taq polymerase (Isolated from Thermus acquaticus) are commonly used in polymerization of nucleotides during polymerase chain reaction. - In case of Taq polymerase, the optimum temperature for polymerization is $70-75^{\circ} \mathrm{C}$ because the base pairing between the primase and template DNA is much more specific at this temperature than that of $37^{\circ} \mathrm{C}$ (optimum temperature for E. coli DNA polymerase).