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Micro Organisms

Micro Organisms
Various bacterial species can be subdivided into

serovarieties
subspecies
biovarieties
all of these

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Micro Organisms
Cell theory includes all of the following except

cells arise by division of preexisting cells
all organisms are composed of one or more cells
the cell is the structural unit of life
the cell is the most primitive form of life

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Micro Organisms
Mycoplasmas are different from the other prokaryotes by

presence of chitin in cell walls
presence of murrain in cell walls
presence of proteins in cell walls
absence of cell wall itself

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Micro Organisms
Which of the following may account for the small size of the cells?

The rate of diffusion
All of these
The number of mRNAs that can be produced by the nucleus
The surface area/volume ratio

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Micro Organisms
Which of the following structure is absent in eukaryotic cells?

Mesosome
Golgi structure
Chloroplasts
Mitochondria

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Micro Organisms
Which of the following is not true for eukaryotic cells?

Gas vacuoles are present
Chromosomes contain histones
Chloroplasts and mitochondria contains 70S ribosomes
Nucleus is bounded by nuclear membrane

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