Multiple Choice QuestionsThermococcus, Methanococcus and Methanobacterium emplify
archaebacteria that contain protein homologous to eukaryotic core histones
archaebacteria that lack any histones resembling those found in eukaryotes but DNA is negatively supercoiled
bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria
bacteria whose DNA is relaxed or positively supercoiled but which have cytoskeleton as well as mitochondria
A genetically engineered micro-organism use successfully in bioremediation of oil spills is a species of
Pseudomonas
Trichoderma
Xanthomonas
Xanthomonas
Which pair of the following belongs to Basidiomycetes?
Birds nest fungi and Pufballs
Pufballs and Calviceps
Peziza and Stink horns
Peziza and Stink horns
Which one of the following statements about mycoplasma is wrong?
They are also called PPLO
They are pleomorphic
They are sensitive to pencillin
They are sensitive to pencillin
What is common about Trypanosoma, Noctiluca, Monocystis and Giardia?
These are all unicellular protists
They have flagella
They produce spores
They produce spores
Which of the following environmental conditions are essential for optimum growth of Mucor on a piece of bread?
A. Temperature of about 25°C
B. Temperature of about 5°C
C. Relative humidity of about 5%
D. Relative humidity of about 95%
E. A shady place
F. A brightly illuminated place
Choose the answer from the following options
A, C and E only
A, D and E only
B, D and E only
B, D and E only
Which of the following are found in extreme saline
conditions?
Archaebacteria
Eubacteria
Cyanobacteria
Cyanobacteria
Viroids differ from viruses in having :
DNA molecules with protein coat
DNA molecules without protein coat
RNA molecules with protein coat
RNA molecules with protein coat
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