Which is correct for bacteria ?
They have both cyclic and non-cyclic photophosphorylation
They absorb light>900 nm of wavelength
They release O2 during photosynthesis
They use H2O during photosynthesis
Free living, aerobic, non-photosynthetic, nitrogen fixing bacterium is
Azotobacter
E. coli
Nostoc
Salmonella
A plasmid
Cannot replicate
Can replicate independently
Shows independent assortment
Lies together with chromosomes
The autonomously independent self replicating extra nuclear DNA imparting certain factors to some bacterium is called
Plastid
Plasmid
Phagemid
Cosmid
A bacterium is capable of withstanding extreme heat, dryness and toxic chemicals. This indicates that it is probably above to form
A thick petidoglycan wall
Endospores
Endotoxins
Endogenous buds
Assign the followingn substances to the cell wall, flagella, ‘S’ layer and pilli of bacteria in correct sequence
1. Glycoprotein II Fimbrilin
III Teichoic acid IV. Flagellin
The correct answer is
III, I, IV, II
III, IV, III, I.
II, IV, III, I
III, IV, II, I
In microbial genetics, which one is referred to as Griffith effect?
Conjugation
Transduction
Transformation
Sexduction
Which of the following is the site of respiration in bacteria ?
Episome
Ribosome
Mesosome
Microsome
Transformation experiment was first performed on which bacteria ?
E.coli
Diplococcal pneumoniae
Salmonella typhi
Pasteurella pestis
Thermococcus, Methanococcus and Methanobacterium exemplify
Archaebacteria that contain protein homologous to eukaryotic core histones
Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.
Bacteria whose DNA is relaxed or positively supercoiled but, which have a cytoskeleton as well as mitochondria.
Bacteria that contain a cytoskeleton and ribosomes.
