NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Histone
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Circular chromosome
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No membrane bounded organelles
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None of the above
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Detailed explanation-1: -Explanation: Prokaryotic cells are primitive cells i.e. they lack a true membrane-bound nucleus. Prokaryotic cells do not have cell organelles.
Detailed explanation-2: -Which of the following is not a characteristic of prokaryotes? Explanation: Prokaryotes do not have membrane-bound organelles, such as the nucleus or mitochondria.
Detailed explanation-3: -It is important to note that archaeans are the only group of prokaryotes that use eukaryote-like histones, rather than the architectural proteins described above, to condense their DNA molecules (Sandman et al., 1990).
Detailed explanation-4: -Except for members of the Archaea domain, prokaryotes do not have histones. Histones are found mostly in eukaryotes. Chromosomes contain a specific kind of protein.
Detailed explanation-5: -Prokaryotic genetic system contains neither DNA nor histones. DNA stands for deoxyribonucleic acid. DNA is double stranded, double helical spiral shaped in structure. DNA is a polymer that contains many small units called nucleotides as monomers.