Which of the following is photoautotrophic bacteria?
Nostoc and Anabaena
Clostridium
Salmonelia
Escherichia coli
Related Questions
Which of the following is a Gram negative bacterium?
Escherichia coli
Bacillus subtillis
Streptomyces coelicolor
Ampycolatopsis orientalis
The main difference between Gram positive and Gram negative bacteria is
Cell membrane
Cell wall
Ribosome
Mitochondria
Given below are two statements:
Statement I: Mycoplasma can pass through filters with a pore size smaller than 1 micron.
Statement II: Mycoplasma are bacteria possessing a cell wall.
In light of the above statements, choose the most appropriate answer from the options given below:
Both Statement I and Statement II are true.
Both Statement I and Statement II are false.
Statement I is true but Statement II is false.
Statement I is false but Statement II is true.
Which of the following conditions would be favoured by thermoacidophiles?
Hot and alkaline
Snow and acidic
Hot and sulphur spring
Gut of cows
Identify the incorrect statement regarding cell division:
Meiosis results in four daughter cells with half the number of chromosomes as the parent cell.
Mitosis produces genetically diverse daughter cells.
Cytokinesis is the division of the cytoplasm.
Mitosis is essential for growth and repair of tissues.
Examples for Branched filamentous Bacteria: I) Mycobacterium (II) Corynebacterium (III) Xanthamonas (IV) Salmonella
I, III
III, IV
I, II
II IV
Which domain of life includes organisms capable of methanogenesis?
Bacteria
Archaea
Eukarya
None of the above
Mycoplasma, unique among bacteria, lack a cell wall. This characteristic makes them:
Highly susceptible to osmotic lysis
Unable to survive in isotonic solutions
Resistant to antibiotics that target cell wall synthesis
Incapable of any form of motility
The production of methane () as a metabolic byproduct in the absence of oxygen is a characteristic feature of:
Halophiles
Methanogens
Thermophiles
Acidophiles
All of the following statements concerning the actinomycetous filamentous soil bacterium Frankia are correct, except that Frankia
can live free in the soil
forms nitrogen-fixing root nodules on its host
produces spores
produces antibiotics effective against other soil bacteria