Various bacterial species can be subdivided into
subspecies
biovarieties
serovarieties
all of these
Correct answer is D
No explanation has been provided for this answer.
Which of the following is considered the most unifying concept in biology?
Taxonomy
Anatomy
Genetics
Evolution
Correct answer is D
No explanation has been provided for this answer.
Gram staining was introduced by
Christian Gram
Alfred Gram
Robert Cook
Louis Pasteur
Correct answer is A
No explanation has been provided for this answer.
Which of the following is not true for prokaryotic organism?
Nucleus is not bounded by nuclear membrane
Chromosomes do not contain histones
80S ribosomes are distributed in cytoplasm
Cell wall contains peptidoglycan as one of the major component
Correct answer is C
No explanation has been provided for this answer.
Which of the following is not true for eukaryotic cells?
Nucleus is bounded by nuclear membrane
Chromosomes contain histones
Chloroplasts and mitochondria contains 70S ribosomes
Gas vacuoles are present
Correct answer is D
No explanation has been provided for this answer.
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
Correct answer is D
No explanation has been provided for this answer.
The unifying feature of the archaea that distinguishes them from the bacteria is
habitats which are extreme environments with regard to acidity
absence of a nuclear membrane temperature
presence of a cell wall containing a characteristic outer membrane
cytoplasmic ribosomes that are 70S
Correct answer is B
No explanation has been provided for this answer.
Which were the investigators who lived at the same time?
Koch and Pasteur
Darwin and Woese
Van Leeuenhoek and Ricketts
Berg and Hooke
Correct answer is A
No explanation has been provided for this answer.
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