Koch's postulates not applicable to Mycobacterium leprae. - Mycobacterium leprae can not be cultured in vitro, Hence, Koch's postulates are not applicable because its incubation period is $2-5 \mathrm{yr}$. - Cholera is caused by Vibrio cholerae. - Diptheria is caused by Corynebacterium diphtheriae.
AIPMT-1999
Biological Classification
258406
In Lederberg's replica plating experiment what shall be used to obtain streptomycin resistant strain : -
1 Minimal medium and streptomycin
2 Complete medium and streptomycin
3 Only minimal medium
4 Only complete medium
Explanation:
If streptomycin resistant mutant are to be obtained, material should be allowed to grow on medium lacking streptomycin so that both mutant and wild types may grow. - The plate now containing only mutants for streptomycin resistance will grow. - These colonies are imprinted on petriplates to form the master pattern and other plates having streptomycin can then be pressed on velveteen to get an impression.
AIPMT-2001
Biological Classification
258478
In prokaryotes, chromatophores are
1 specialized granules responsible for coloration of cells
2 structures responsible for organizing the shape of the organism
3 incusion bodies lying free inside the cells for carrying out various metabolic activities
4 internal membrane systems that may become extensive and complex in photosynthetic bacteria
Explanation:
Chromatophores are pigment-containing vesicles that are found in the cell cytoplasm. They are present in prokaryotes such as Cyanobacteria and Rhodospirillum. - Chromatophore is found in some photosynthetic bacteria. These are the pigment - containing phycobilin that are necessary for photosynthesis take place
Rajasthan PMT-2010
Biological Classification
258408
Plant Decomposers are : -
1 Monera and fungi
2 Fungi and plants
3 Protista and Animalia
4 Animalia and Monera
Explanation:
Bacteria (Monera) and Fungi can be considered as plant decomposers. - The bacteria and fungi are heterotrophic organisms which cannot produce their own food and depend on the other organism for the source of food. The fungi and the bacteria feed on the dead and decaying matter and are known as saprophytes and also called decomposers. - Decomposer refers to an organism that breaks down dead organic material into its constituent elements also referred to as detritivores.
Koch's postulates not applicable to Mycobacterium leprae. - Mycobacterium leprae can not be cultured in vitro, Hence, Koch's postulates are not applicable because its incubation period is $2-5 \mathrm{yr}$. - Cholera is caused by Vibrio cholerae. - Diptheria is caused by Corynebacterium diphtheriae.
AIPMT-1999
Biological Classification
258406
In Lederberg's replica plating experiment what shall be used to obtain streptomycin resistant strain : -
1 Minimal medium and streptomycin
2 Complete medium and streptomycin
3 Only minimal medium
4 Only complete medium
Explanation:
If streptomycin resistant mutant are to be obtained, material should be allowed to grow on medium lacking streptomycin so that both mutant and wild types may grow. - The plate now containing only mutants for streptomycin resistance will grow. - These colonies are imprinted on petriplates to form the master pattern and other plates having streptomycin can then be pressed on velveteen to get an impression.
AIPMT-2001
Biological Classification
258478
In prokaryotes, chromatophores are
1 specialized granules responsible for coloration of cells
2 structures responsible for organizing the shape of the organism
3 incusion bodies lying free inside the cells for carrying out various metabolic activities
4 internal membrane systems that may become extensive and complex in photosynthetic bacteria
Explanation:
Chromatophores are pigment-containing vesicles that are found in the cell cytoplasm. They are present in prokaryotes such as Cyanobacteria and Rhodospirillum. - Chromatophore is found in some photosynthetic bacteria. These are the pigment - containing phycobilin that are necessary for photosynthesis take place
Rajasthan PMT-2010
Biological Classification
258408
Plant Decomposers are : -
1 Monera and fungi
2 Fungi and plants
3 Protista and Animalia
4 Animalia and Monera
Explanation:
Bacteria (Monera) and Fungi can be considered as plant decomposers. - The bacteria and fungi are heterotrophic organisms which cannot produce their own food and depend on the other organism for the source of food. The fungi and the bacteria feed on the dead and decaying matter and are known as saprophytes and also called decomposers. - Decomposer refers to an organism that breaks down dead organic material into its constituent elements also referred to as detritivores.
Koch's postulates not applicable to Mycobacterium leprae. - Mycobacterium leprae can not be cultured in vitro, Hence, Koch's postulates are not applicable because its incubation period is $2-5 \mathrm{yr}$. - Cholera is caused by Vibrio cholerae. - Diptheria is caused by Corynebacterium diphtheriae.
AIPMT-1999
Biological Classification
258406
In Lederberg's replica plating experiment what shall be used to obtain streptomycin resistant strain : -
1 Minimal medium and streptomycin
2 Complete medium and streptomycin
3 Only minimal medium
4 Only complete medium
Explanation:
If streptomycin resistant mutant are to be obtained, material should be allowed to grow on medium lacking streptomycin so that both mutant and wild types may grow. - The plate now containing only mutants for streptomycin resistance will grow. - These colonies are imprinted on petriplates to form the master pattern and other plates having streptomycin can then be pressed on velveteen to get an impression.
AIPMT-2001
Biological Classification
258478
In prokaryotes, chromatophores are
1 specialized granules responsible for coloration of cells
2 structures responsible for organizing the shape of the organism
3 incusion bodies lying free inside the cells for carrying out various metabolic activities
4 internal membrane systems that may become extensive and complex in photosynthetic bacteria
Explanation:
Chromatophores are pigment-containing vesicles that are found in the cell cytoplasm. They are present in prokaryotes such as Cyanobacteria and Rhodospirillum. - Chromatophore is found in some photosynthetic bacteria. These are the pigment - containing phycobilin that are necessary for photosynthesis take place
Rajasthan PMT-2010
Biological Classification
258408
Plant Decomposers are : -
1 Monera and fungi
2 Fungi and plants
3 Protista and Animalia
4 Animalia and Monera
Explanation:
Bacteria (Monera) and Fungi can be considered as plant decomposers. - The bacteria and fungi are heterotrophic organisms which cannot produce their own food and depend on the other organism for the source of food. The fungi and the bacteria feed on the dead and decaying matter and are known as saprophytes and also called decomposers. - Decomposer refers to an organism that breaks down dead organic material into its constituent elements also referred to as detritivores.
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Biological Classification
258405
Koch's Postulates not applicable to
1 Mycobacterium leprae
2 Tuberculosis
3 Pneumonia
4 Cholera
Explanation:
Koch's postulates not applicable to Mycobacterium leprae. - Mycobacterium leprae can not be cultured in vitro, Hence, Koch's postulates are not applicable because its incubation period is $2-5 \mathrm{yr}$. - Cholera is caused by Vibrio cholerae. - Diptheria is caused by Corynebacterium diphtheriae.
AIPMT-1999
Biological Classification
258406
In Lederberg's replica plating experiment what shall be used to obtain streptomycin resistant strain : -
1 Minimal medium and streptomycin
2 Complete medium and streptomycin
3 Only minimal medium
4 Only complete medium
Explanation:
If streptomycin resistant mutant are to be obtained, material should be allowed to grow on medium lacking streptomycin so that both mutant and wild types may grow. - The plate now containing only mutants for streptomycin resistance will grow. - These colonies are imprinted on petriplates to form the master pattern and other plates having streptomycin can then be pressed on velveteen to get an impression.
AIPMT-2001
Biological Classification
258478
In prokaryotes, chromatophores are
1 specialized granules responsible for coloration of cells
2 structures responsible for organizing the shape of the organism
3 incusion bodies lying free inside the cells for carrying out various metabolic activities
4 internal membrane systems that may become extensive and complex in photosynthetic bacteria
Explanation:
Chromatophores are pigment-containing vesicles that are found in the cell cytoplasm. They are present in prokaryotes such as Cyanobacteria and Rhodospirillum. - Chromatophore is found in some photosynthetic bacteria. These are the pigment - containing phycobilin that are necessary for photosynthesis take place
Rajasthan PMT-2010
Biological Classification
258408
Plant Decomposers are : -
1 Monera and fungi
2 Fungi and plants
3 Protista and Animalia
4 Animalia and Monera
Explanation:
Bacteria (Monera) and Fungi can be considered as plant decomposers. - The bacteria and fungi are heterotrophic organisms which cannot produce their own food and depend on the other organism for the source of food. The fungi and the bacteria feed on the dead and decaying matter and are known as saprophytes and also called decomposers. - Decomposer refers to an organism that breaks down dead organic material into its constituent elements also referred to as detritivores.
