258224
Structure of bacteriophages is complicated because they show I. Polyhedral symmetry II. Helical symmetry III. Bilateral symmetry IV. Radial symmetry
1 III, IV
2 I, III
3 II, III
4 I, II
Explanation:
Structure of Bacteriophages is complicated because they show polyhedral and helical symmetry. In helical structure nucleic acid surrounded by a hollow protein cylinder or capsid and possessing a helical structure. In polyhedral structure nucleic acid is surrounded by a polyhedral capsid, usually in the form of an icosahedron. Most of the phages have tailed phage morphology.
AP EAPCET-22.05.2023
Biological Classification
258232
Archaebacteria differ from eubacteria in:
1 Cell membrane
2 Mode of nutrition
3 Cell shape
4 Mode of reproduction
Explanation:
The archaebacteria are the 'primitive' bacteria that include extremophiles like methanogens, halophiles and thermophiles. They represent some of the most ancient of life forms that persist today. They have both eubacterial and eukaryotic characters besides the features unique to them. Their mode of reproduction, nutrition and cell shape and size resembles a typical eubacteria. Their cell walls are made of a variety of polymers, but do not contain peptidoglycan unlike eubacteria. - Archaebacteria differs from eubacteria only in the cell membrane. The membrane lipids present in archaebacteria are ether-linked, whereas, the eubacteria contain ester-linked membrane lipids.
AP EAMCET -03.09.2021
Biological Classification
258237
The sites of nitrogen fixation in blue green algae are
1 vegetative cells
2 apical cells
3 heterocysts
4 basal cells
Explanation:
A heterocyst is a nitrogen - fixing cyanobacterial cell that has undergone differentiation. - Under anaerobic conditions, the heterocysts serve as nitrogen fixation sites. They arise as a result of a deficiency of fixed nitrogen. - Heterocysts are found in many species of filamentous blue-green algae. They are cells of slightly larger size and with a more thickened wall than the vegetative cells.
MHT CET 5.10.2020 Shift-I
Biological Classification
258239
Based on the following characters identify the organisms respectively - Cell wall with pseudomurein - Cell wall with mucopeptide - Marine bioluminescence - Cell wall made of protein rich pellicle and found in stagnant water
1 Methanogens, Bacillus, Noctiluca, Euglena
2 Bacillus, Methanogens, Noctiluca, Euglena
3 Noctiluca, Euglena, Methanogens, Bacillus
4 Euglena, Noctiluca, Bacillus, Methanogens
Explanation:
The cell wall with pseudomurein is present methanogens - The cell wall with mucopeptide is found in Bacillus. - Noctiluca is marine bioluminescences protozoa. - The cell wall of Euglena made up of protein rich pellicle and found in stagnant water.
258224
Structure of bacteriophages is complicated because they show I. Polyhedral symmetry II. Helical symmetry III. Bilateral symmetry IV. Radial symmetry
1 III, IV
2 I, III
3 II, III
4 I, II
Explanation:
Structure of Bacteriophages is complicated because they show polyhedral and helical symmetry. In helical structure nucleic acid surrounded by a hollow protein cylinder or capsid and possessing a helical structure. In polyhedral structure nucleic acid is surrounded by a polyhedral capsid, usually in the form of an icosahedron. Most of the phages have tailed phage morphology.
AP EAPCET-22.05.2023
Biological Classification
258232
Archaebacteria differ from eubacteria in:
1 Cell membrane
2 Mode of nutrition
3 Cell shape
4 Mode of reproduction
Explanation:
The archaebacteria are the 'primitive' bacteria that include extremophiles like methanogens, halophiles and thermophiles. They represent some of the most ancient of life forms that persist today. They have both eubacterial and eukaryotic characters besides the features unique to them. Their mode of reproduction, nutrition and cell shape and size resembles a typical eubacteria. Their cell walls are made of a variety of polymers, but do not contain peptidoglycan unlike eubacteria. - Archaebacteria differs from eubacteria only in the cell membrane. The membrane lipids present in archaebacteria are ether-linked, whereas, the eubacteria contain ester-linked membrane lipids.
AP EAMCET -03.09.2021
Biological Classification
258237
The sites of nitrogen fixation in blue green algae are
1 vegetative cells
2 apical cells
3 heterocysts
4 basal cells
Explanation:
A heterocyst is a nitrogen - fixing cyanobacterial cell that has undergone differentiation. - Under anaerobic conditions, the heterocysts serve as nitrogen fixation sites. They arise as a result of a deficiency of fixed nitrogen. - Heterocysts are found in many species of filamentous blue-green algae. They are cells of slightly larger size and with a more thickened wall than the vegetative cells.
MHT CET 5.10.2020 Shift-I
Biological Classification
258239
Based on the following characters identify the organisms respectively - Cell wall with pseudomurein - Cell wall with mucopeptide - Marine bioluminescence - Cell wall made of protein rich pellicle and found in stagnant water
1 Methanogens, Bacillus, Noctiluca, Euglena
2 Bacillus, Methanogens, Noctiluca, Euglena
3 Noctiluca, Euglena, Methanogens, Bacillus
4 Euglena, Noctiluca, Bacillus, Methanogens
Explanation:
The cell wall with pseudomurein is present methanogens - The cell wall with mucopeptide is found in Bacillus. - Noctiluca is marine bioluminescences protozoa. - The cell wall of Euglena made up of protein rich pellicle and found in stagnant water.
258224
Structure of bacteriophages is complicated because they show I. Polyhedral symmetry II. Helical symmetry III. Bilateral symmetry IV. Radial symmetry
1 III, IV
2 I, III
3 II, III
4 I, II
Explanation:
Structure of Bacteriophages is complicated because they show polyhedral and helical symmetry. In helical structure nucleic acid surrounded by a hollow protein cylinder or capsid and possessing a helical structure. In polyhedral structure nucleic acid is surrounded by a polyhedral capsid, usually in the form of an icosahedron. Most of the phages have tailed phage morphology.
AP EAPCET-22.05.2023
Biological Classification
258232
Archaebacteria differ from eubacteria in:
1 Cell membrane
2 Mode of nutrition
3 Cell shape
4 Mode of reproduction
Explanation:
The archaebacteria are the 'primitive' bacteria that include extremophiles like methanogens, halophiles and thermophiles. They represent some of the most ancient of life forms that persist today. They have both eubacterial and eukaryotic characters besides the features unique to them. Their mode of reproduction, nutrition and cell shape and size resembles a typical eubacteria. Their cell walls are made of a variety of polymers, but do not contain peptidoglycan unlike eubacteria. - Archaebacteria differs from eubacteria only in the cell membrane. The membrane lipids present in archaebacteria are ether-linked, whereas, the eubacteria contain ester-linked membrane lipids.
AP EAMCET -03.09.2021
Biological Classification
258237
The sites of nitrogen fixation in blue green algae are
1 vegetative cells
2 apical cells
3 heterocysts
4 basal cells
Explanation:
A heterocyst is a nitrogen - fixing cyanobacterial cell that has undergone differentiation. - Under anaerobic conditions, the heterocysts serve as nitrogen fixation sites. They arise as a result of a deficiency of fixed nitrogen. - Heterocysts are found in many species of filamentous blue-green algae. They are cells of slightly larger size and with a more thickened wall than the vegetative cells.
MHT CET 5.10.2020 Shift-I
Biological Classification
258239
Based on the following characters identify the organisms respectively - Cell wall with pseudomurein - Cell wall with mucopeptide - Marine bioluminescence - Cell wall made of protein rich pellicle and found in stagnant water
1 Methanogens, Bacillus, Noctiluca, Euglena
2 Bacillus, Methanogens, Noctiluca, Euglena
3 Noctiluca, Euglena, Methanogens, Bacillus
4 Euglena, Noctiluca, Bacillus, Methanogens
Explanation:
The cell wall with pseudomurein is present methanogens - The cell wall with mucopeptide is found in Bacillus. - Noctiluca is marine bioluminescences protozoa. - The cell wall of Euglena made up of protein rich pellicle and found in stagnant water.
258224
Structure of bacteriophages is complicated because they show I. Polyhedral symmetry II. Helical symmetry III. Bilateral symmetry IV. Radial symmetry
1 III, IV
2 I, III
3 II, III
4 I, II
Explanation:
Structure of Bacteriophages is complicated because they show polyhedral and helical symmetry. In helical structure nucleic acid surrounded by a hollow protein cylinder or capsid and possessing a helical structure. In polyhedral structure nucleic acid is surrounded by a polyhedral capsid, usually in the form of an icosahedron. Most of the phages have tailed phage morphology.
AP EAPCET-22.05.2023
Biological Classification
258232
Archaebacteria differ from eubacteria in:
1 Cell membrane
2 Mode of nutrition
3 Cell shape
4 Mode of reproduction
Explanation:
The archaebacteria are the 'primitive' bacteria that include extremophiles like methanogens, halophiles and thermophiles. They represent some of the most ancient of life forms that persist today. They have both eubacterial and eukaryotic characters besides the features unique to them. Their mode of reproduction, nutrition and cell shape and size resembles a typical eubacteria. Their cell walls are made of a variety of polymers, but do not contain peptidoglycan unlike eubacteria. - Archaebacteria differs from eubacteria only in the cell membrane. The membrane lipids present in archaebacteria are ether-linked, whereas, the eubacteria contain ester-linked membrane lipids.
AP EAMCET -03.09.2021
Biological Classification
258237
The sites of nitrogen fixation in blue green algae are
1 vegetative cells
2 apical cells
3 heterocysts
4 basal cells
Explanation:
A heterocyst is a nitrogen - fixing cyanobacterial cell that has undergone differentiation. - Under anaerobic conditions, the heterocysts serve as nitrogen fixation sites. They arise as a result of a deficiency of fixed nitrogen. - Heterocysts are found in many species of filamentous blue-green algae. They are cells of slightly larger size and with a more thickened wall than the vegetative cells.
MHT CET 5.10.2020 Shift-I
Biological Classification
258239
Based on the following characters identify the organisms respectively - Cell wall with pseudomurein - Cell wall with mucopeptide - Marine bioluminescence - Cell wall made of protein rich pellicle and found in stagnant water
1 Methanogens, Bacillus, Noctiluca, Euglena
2 Bacillus, Methanogens, Noctiluca, Euglena
3 Noctiluca, Euglena, Methanogens, Bacillus
4 Euglena, Noctiluca, Bacillus, Methanogens
Explanation:
The cell wall with pseudomurein is present methanogens - The cell wall with mucopeptide is found in Bacillus. - Noctiluca is marine bioluminescences protozoa. - The cell wall of Euglena made up of protein rich pellicle and found in stagnant water.
