NEET Test Series from KOTA - 10 Papers In MS WORD
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Biological Classification
258355
Linkage group in $\mathbf{E}$. coli is/are
1 4
2 2
3 1
4 5
Explanation:
E. coli contains single chromosome so, the number of linkage group in E. coli is 1 .
DUMET-2007
Biological Classification
258356
The structure of E. coil chromosomal DNA is
1 Double - stranded, right handed and circular
2 Single - stranded, right handed and circular
3 Double - stranded, left handed and linear
4 Double - stranded, left handed and circular
Explanation:
The structure of E. coli chromosomal DNA is double stranded, right-handed and circular. A double stranded DNA molecule is made up of two strands of DNA, running in opposite or in antiparallel direction.
WB JEE-2014
Biological Classification
258358
The component of bacteria that retains the crystal violet stain during Gram staining is
1 $\mathrm{O}$ - antigen
2 Lipopolysaccharide
3 Peptidoglycan
4 Cytoplasmic membrane
Explanation:
The component of bacteria that retains the crystal violet stain during Gram staining is petidoglycan, thick in Gram positive bacteria 70-80\% but in Gram negative bacteria thin $10-20 \%$ single layer. - In Gram positive bacteria blue violet colour retained after washing with blue violet colour returned after washing with alcohol, but in Gram negative bacteria colour is washed.
WB JEE-2014
Biological Classification
258359
Which of the following bacteria is observed as chain - like formation?
1 Escherichia coli
2 Bacillus subtilis
3 Streptococcus pyogenes
4 Micrococcus flavus
Explanation:
Streptococcus pyogenes is a species of Gram positive aerotolerant bacteria in the Genus Streptococcus. These are extracellular and made up of non-motile and non - sporing cocci that tend to link in chains.
E. coli contains single chromosome so, the number of linkage group in E. coli is 1 .
DUMET-2007
Biological Classification
258356
The structure of E. coil chromosomal DNA is
1 Double - stranded, right handed and circular
2 Single - stranded, right handed and circular
3 Double - stranded, left handed and linear
4 Double - stranded, left handed and circular
Explanation:
The structure of E. coli chromosomal DNA is double stranded, right-handed and circular. A double stranded DNA molecule is made up of two strands of DNA, running in opposite or in antiparallel direction.
WB JEE-2014
Biological Classification
258358
The component of bacteria that retains the crystal violet stain during Gram staining is
1 $\mathrm{O}$ - antigen
2 Lipopolysaccharide
3 Peptidoglycan
4 Cytoplasmic membrane
Explanation:
The component of bacteria that retains the crystal violet stain during Gram staining is petidoglycan, thick in Gram positive bacteria 70-80\% but in Gram negative bacteria thin $10-20 \%$ single layer. - In Gram positive bacteria blue violet colour retained after washing with blue violet colour returned after washing with alcohol, but in Gram negative bacteria colour is washed.
WB JEE-2014
Biological Classification
258359
Which of the following bacteria is observed as chain - like formation?
1 Escherichia coli
2 Bacillus subtilis
3 Streptococcus pyogenes
4 Micrococcus flavus
Explanation:
Streptococcus pyogenes is a species of Gram positive aerotolerant bacteria in the Genus Streptococcus. These are extracellular and made up of non-motile and non - sporing cocci that tend to link in chains.
E. coli contains single chromosome so, the number of linkage group in E. coli is 1 .
DUMET-2007
Biological Classification
258356
The structure of E. coil chromosomal DNA is
1 Double - stranded, right handed and circular
2 Single - stranded, right handed and circular
3 Double - stranded, left handed and linear
4 Double - stranded, left handed and circular
Explanation:
The structure of E. coli chromosomal DNA is double stranded, right-handed and circular. A double stranded DNA molecule is made up of two strands of DNA, running in opposite or in antiparallel direction.
WB JEE-2014
Biological Classification
258358
The component of bacteria that retains the crystal violet stain during Gram staining is
1 $\mathrm{O}$ - antigen
2 Lipopolysaccharide
3 Peptidoglycan
4 Cytoplasmic membrane
Explanation:
The component of bacteria that retains the crystal violet stain during Gram staining is petidoglycan, thick in Gram positive bacteria 70-80\% but in Gram negative bacteria thin $10-20 \%$ single layer. - In Gram positive bacteria blue violet colour retained after washing with blue violet colour returned after washing with alcohol, but in Gram negative bacteria colour is washed.
WB JEE-2014
Biological Classification
258359
Which of the following bacteria is observed as chain - like formation?
1 Escherichia coli
2 Bacillus subtilis
3 Streptococcus pyogenes
4 Micrococcus flavus
Explanation:
Streptococcus pyogenes is a species of Gram positive aerotolerant bacteria in the Genus Streptococcus. These are extracellular and made up of non-motile and non - sporing cocci that tend to link in chains.
E. coli contains single chromosome so, the number of linkage group in E. coli is 1 .
DUMET-2007
Biological Classification
258356
The structure of E. coil chromosomal DNA is
1 Double - stranded, right handed and circular
2 Single - stranded, right handed and circular
3 Double - stranded, left handed and linear
4 Double - stranded, left handed and circular
Explanation:
The structure of E. coli chromosomal DNA is double stranded, right-handed and circular. A double stranded DNA molecule is made up of two strands of DNA, running in opposite or in antiparallel direction.
WB JEE-2014
Biological Classification
258358
The component of bacteria that retains the crystal violet stain during Gram staining is
1 $\mathrm{O}$ - antigen
2 Lipopolysaccharide
3 Peptidoglycan
4 Cytoplasmic membrane
Explanation:
The component of bacteria that retains the crystal violet stain during Gram staining is petidoglycan, thick in Gram positive bacteria 70-80\% but in Gram negative bacteria thin $10-20 \%$ single layer. - In Gram positive bacteria blue violet colour retained after washing with blue violet colour returned after washing with alcohol, but in Gram negative bacteria colour is washed.
WB JEE-2014
Biological Classification
258359
Which of the following bacteria is observed as chain - like formation?
1 Escherichia coli
2 Bacillus subtilis
3 Streptococcus pyogenes
4 Micrococcus flavus
Explanation:
Streptococcus pyogenes is a species of Gram positive aerotolerant bacteria in the Genus Streptococcus. These are extracellular and made up of non-motile and non - sporing cocci that tend to link in chains.
