Which of the following is not a feature of the plasmids?
Independent replication
Circular structure
Transferable
Single – stranded
Related Questions
The process which cannot take place in the absence of virus is
Transformation
Conjugation
Translocation
Transduction
Pleuropneumonia-like organisms (PPLO) are known for their small size and lack of a cell wall. Which of the following accurately describes their pathogenicity and oxygen requirements?
Pathogenic to plants only; Requires oxygen
Pathogenic to animals only; Requires oxygen
Pathogenic to both plants and animals; Can survive without oxygen
Non-pathogenic; Requires oxygen
A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fernAzolla is
Tolypothrix
Chlorella
Nostoc
Anabaena
Consider the following statements about mycoplasma
I. It is pleuomorphic bacteria, which lacks cell wall
II. Mycoplasma is the smallest living organism
III. They can not survive without oxygen
IV. Many mycoplasma are pathogenic in animals and plants
Which of the statements given above are correct?
I, II and III
II, III and IV
I, II and IV
I, II, III and IV
Bacterium having flagella with all over body is known as
Peritrichous
Amphitrichous
Monotrichous
None of these
Methanogens belong to which of the following groups?
Eubacteria
Archaebacteria
Protista
Fungi
Which of the following is a nitrogen fixing organism?
BGA
Rhizobium
Both (1)and (2)
Agaricus
Which of the following characteristics is NOT associated with Mycoplasma?
Lack of a cell wall
Ability to survive without oxygen
Pathogenicity to plants and animals
Presence of a well-defined nucleus
Which of the following statements is FALSE regarding plasmids?
They are self-replicating.
They can carry genes for antibiotic resistance.
They are always integrated into the bacterial chromosome.
They are extrachromosomal DNA molecules.
Most abundant bacteria are
Chemosynthetic bacteria
Heterotrophic bacteria
Heterotrophic decomposers
Archaebacteria
