Sexual reproduction absent in Nostoc. It reproduces vegetatively by the fragmentation hormogonia, akinetes and heterocyst. - By fragmentation- Filament broken into segment called the fragment. Each fragment after the growth forms new plant. - Akinetes are formed during the unfavorable condition.
BVP-2001
Biological Classification
258311
Genophore/bacterial genome or nucleoid is made of:
1 histones and non-histones
2 RNA and histones
3 a single double stranded DNA
4 a single stranded DNA
Explanation:
Genophores refers to the corresponding chromosome in prokaryotes, viruses, and semiautonomous organelles that function as inherited material. It is made up of nucleic acid, DNA or RNA but has no histone proteins. Thus, the genophores/ bacterial genome or nucleoid is made of a single double stranded DNA.
AIPMT-1993
Biological Classification
258297
Which of the following are true archaebacteria?
1 1,2 and 3 are correct
2 1 and 2 are correct
3 1,2 and 4 are correct
4 1 and 3 are correct
Explanation:
It is unicellular. Prokaryotic organism, the cell wall consist of complex proteins and complex non cellulosic polysaccharide but peptidoglycan is absent in cell wall. - The cell membrane made up of branched chain of lipid, due to the presence of lipid chains, they are resistant to high temperature, salinity, radiation and change of $\mathrm{pH}$ is tolerance of unfavorable condition methanogenes.
BHU PMT (Mains)-2006
Biological Classification
258302
Methanogens belong to
1 eubacteria
2 archaebacteria
3 dinoflagellates
4 slime moulds
Explanation:
The archaebacteria that produce methane as a metabolic by product are called Methanogens e.g. Methane producing genera are Methanobacterium, Methanococcus, Methanospirillum etc. - Archaebacteria are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of first life. - They are autotrophs and derive their energy from oxidation of chemical energy sources such as ammonia and methane etc.
NEET-2016 Phase-II
Biological Classification
258303
The structures that help some bacteria to attach to rocks and/or host tissues are :
1 Holdfast
2 Rhizoids
3 Fimbriae
4 Mesosomes
Explanation:
Fimbriae and pili are thin, protein tubes originated from the cytoplasmic membrane of many bacteria. It help to stick the bacteria to the surface. Fimbriae help to adhere to animal cells and some inanimate objects. - The main difference between fimbriae and pili is that fimbriae are responsible for the attachment of the cell to its substrate whereas pili are responsible for the attachment and horizontal gene transfer during bacterial conjugation.
Sexual reproduction absent in Nostoc. It reproduces vegetatively by the fragmentation hormogonia, akinetes and heterocyst. - By fragmentation- Filament broken into segment called the fragment. Each fragment after the growth forms new plant. - Akinetes are formed during the unfavorable condition.
BVP-2001
Biological Classification
258311
Genophore/bacterial genome or nucleoid is made of:
1 histones and non-histones
2 RNA and histones
3 a single double stranded DNA
4 a single stranded DNA
Explanation:
Genophores refers to the corresponding chromosome in prokaryotes, viruses, and semiautonomous organelles that function as inherited material. It is made up of nucleic acid, DNA or RNA but has no histone proteins. Thus, the genophores/ bacterial genome or nucleoid is made of a single double stranded DNA.
AIPMT-1993
Biological Classification
258297
Which of the following are true archaebacteria?
1 1,2 and 3 are correct
2 1 and 2 are correct
3 1,2 and 4 are correct
4 1 and 3 are correct
Explanation:
It is unicellular. Prokaryotic organism, the cell wall consist of complex proteins and complex non cellulosic polysaccharide but peptidoglycan is absent in cell wall. - The cell membrane made up of branched chain of lipid, due to the presence of lipid chains, they are resistant to high temperature, salinity, radiation and change of $\mathrm{pH}$ is tolerance of unfavorable condition methanogenes.
BHU PMT (Mains)-2006
Biological Classification
258302
Methanogens belong to
1 eubacteria
2 archaebacteria
3 dinoflagellates
4 slime moulds
Explanation:
The archaebacteria that produce methane as a metabolic by product are called Methanogens e.g. Methane producing genera are Methanobacterium, Methanococcus, Methanospirillum etc. - Archaebacteria are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of first life. - They are autotrophs and derive their energy from oxidation of chemical energy sources such as ammonia and methane etc.
NEET-2016 Phase-II
Biological Classification
258303
The structures that help some bacteria to attach to rocks and/or host tissues are :
1 Holdfast
2 Rhizoids
3 Fimbriae
4 Mesosomes
Explanation:
Fimbriae and pili are thin, protein tubes originated from the cytoplasmic membrane of many bacteria. It help to stick the bacteria to the surface. Fimbriae help to adhere to animal cells and some inanimate objects. - The main difference between fimbriae and pili is that fimbriae are responsible for the attachment of the cell to its substrate whereas pili are responsible for the attachment and horizontal gene transfer during bacterial conjugation.
Sexual reproduction absent in Nostoc. It reproduces vegetatively by the fragmentation hormogonia, akinetes and heterocyst. - By fragmentation- Filament broken into segment called the fragment. Each fragment after the growth forms new plant. - Akinetes are formed during the unfavorable condition.
BVP-2001
Biological Classification
258311
Genophore/bacterial genome or nucleoid is made of:
1 histones and non-histones
2 RNA and histones
3 a single double stranded DNA
4 a single stranded DNA
Explanation:
Genophores refers to the corresponding chromosome in prokaryotes, viruses, and semiautonomous organelles that function as inherited material. It is made up of nucleic acid, DNA or RNA but has no histone proteins. Thus, the genophores/ bacterial genome or nucleoid is made of a single double stranded DNA.
AIPMT-1993
Biological Classification
258297
Which of the following are true archaebacteria?
1 1,2 and 3 are correct
2 1 and 2 are correct
3 1,2 and 4 are correct
4 1 and 3 are correct
Explanation:
It is unicellular. Prokaryotic organism, the cell wall consist of complex proteins and complex non cellulosic polysaccharide but peptidoglycan is absent in cell wall. - The cell membrane made up of branched chain of lipid, due to the presence of lipid chains, they are resistant to high temperature, salinity, radiation and change of $\mathrm{pH}$ is tolerance of unfavorable condition methanogenes.
BHU PMT (Mains)-2006
Biological Classification
258302
Methanogens belong to
1 eubacteria
2 archaebacteria
3 dinoflagellates
4 slime moulds
Explanation:
The archaebacteria that produce methane as a metabolic by product are called Methanogens e.g. Methane producing genera are Methanobacterium, Methanococcus, Methanospirillum etc. - Archaebacteria are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of first life. - They are autotrophs and derive their energy from oxidation of chemical energy sources such as ammonia and methane etc.
NEET-2016 Phase-II
Biological Classification
258303
The structures that help some bacteria to attach to rocks and/or host tissues are :
1 Holdfast
2 Rhizoids
3 Fimbriae
4 Mesosomes
Explanation:
Fimbriae and pili are thin, protein tubes originated from the cytoplasmic membrane of many bacteria. It help to stick the bacteria to the surface. Fimbriae help to adhere to animal cells and some inanimate objects. - The main difference between fimbriae and pili is that fimbriae are responsible for the attachment of the cell to its substrate whereas pili are responsible for the attachment and horizontal gene transfer during bacterial conjugation.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
Biological Classification
258292
Sexual reproduction is absent in:
1 Volvox
2 Spirogyra
3 Nostoc
4 Ulothrix
Explanation:
Sexual reproduction absent in Nostoc. It reproduces vegetatively by the fragmentation hormogonia, akinetes and heterocyst. - By fragmentation- Filament broken into segment called the fragment. Each fragment after the growth forms new plant. - Akinetes are formed during the unfavorable condition.
BVP-2001
Biological Classification
258311
Genophore/bacterial genome or nucleoid is made of:
1 histones and non-histones
2 RNA and histones
3 a single double stranded DNA
4 a single stranded DNA
Explanation:
Genophores refers to the corresponding chromosome in prokaryotes, viruses, and semiautonomous organelles that function as inherited material. It is made up of nucleic acid, DNA or RNA but has no histone proteins. Thus, the genophores/ bacterial genome or nucleoid is made of a single double stranded DNA.
AIPMT-1993
Biological Classification
258297
Which of the following are true archaebacteria?
1 1,2 and 3 are correct
2 1 and 2 are correct
3 1,2 and 4 are correct
4 1 and 3 are correct
Explanation:
It is unicellular. Prokaryotic organism, the cell wall consist of complex proteins and complex non cellulosic polysaccharide but peptidoglycan is absent in cell wall. - The cell membrane made up of branched chain of lipid, due to the presence of lipid chains, they are resistant to high temperature, salinity, radiation and change of $\mathrm{pH}$ is tolerance of unfavorable condition methanogenes.
BHU PMT (Mains)-2006
Biological Classification
258302
Methanogens belong to
1 eubacteria
2 archaebacteria
3 dinoflagellates
4 slime moulds
Explanation:
The archaebacteria that produce methane as a metabolic by product are called Methanogens e.g. Methane producing genera are Methanobacterium, Methanococcus, Methanospirillum etc. - Archaebacteria are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of first life. - They are autotrophs and derive their energy from oxidation of chemical energy sources such as ammonia and methane etc.
NEET-2016 Phase-II
Biological Classification
258303
The structures that help some bacteria to attach to rocks and/or host tissues are :
1 Holdfast
2 Rhizoids
3 Fimbriae
4 Mesosomes
Explanation:
Fimbriae and pili are thin, protein tubes originated from the cytoplasmic membrane of many bacteria. It help to stick the bacteria to the surface. Fimbriae help to adhere to animal cells and some inanimate objects. - The main difference between fimbriae and pili is that fimbriae are responsible for the attachment of the cell to its substrate whereas pili are responsible for the attachment and horizontal gene transfer during bacterial conjugation.
Sexual reproduction absent in Nostoc. It reproduces vegetatively by the fragmentation hormogonia, akinetes and heterocyst. - By fragmentation- Filament broken into segment called the fragment. Each fragment after the growth forms new plant. - Akinetes are formed during the unfavorable condition.
BVP-2001
Biological Classification
258311
Genophore/bacterial genome or nucleoid is made of:
1 histones and non-histones
2 RNA and histones
3 a single double stranded DNA
4 a single stranded DNA
Explanation:
Genophores refers to the corresponding chromosome in prokaryotes, viruses, and semiautonomous organelles that function as inherited material. It is made up of nucleic acid, DNA or RNA but has no histone proteins. Thus, the genophores/ bacterial genome or nucleoid is made of a single double stranded DNA.
AIPMT-1993
Biological Classification
258297
Which of the following are true archaebacteria?
1 1,2 and 3 are correct
2 1 and 2 are correct
3 1,2 and 4 are correct
4 1 and 3 are correct
Explanation:
It is unicellular. Prokaryotic organism, the cell wall consist of complex proteins and complex non cellulosic polysaccharide but peptidoglycan is absent in cell wall. - The cell membrane made up of branched chain of lipid, due to the presence of lipid chains, they are resistant to high temperature, salinity, radiation and change of $\mathrm{pH}$ is tolerance of unfavorable condition methanogenes.
BHU PMT (Mains)-2006
Biological Classification
258302
Methanogens belong to
1 eubacteria
2 archaebacteria
3 dinoflagellates
4 slime moulds
Explanation:
The archaebacteria that produce methane as a metabolic by product are called Methanogens e.g. Methane producing genera are Methanobacterium, Methanococcus, Methanospirillum etc. - Archaebacteria are a group of most primitive prokaryotes which are believed to have evolved immediately after the evolution of first life. - They are autotrophs and derive their energy from oxidation of chemical energy sources such as ammonia and methane etc.
NEET-2016 Phase-II
Biological Classification
258303
The structures that help some bacteria to attach to rocks and/or host tissues are :
1 Holdfast
2 Rhizoids
3 Fimbriae
4 Mesosomes
Explanation:
Fimbriae and pili are thin, protein tubes originated from the cytoplasmic membrane of many bacteria. It help to stick the bacteria to the surface. Fimbriae help to adhere to animal cells and some inanimate objects. - The main difference between fimbriae and pili is that fimbriae are responsible for the attachment of the cell to its substrate whereas pili are responsible for the attachment and horizontal gene transfer during bacterial conjugation.
