MEDICINE MCQ
INFECTIOUS DISEASES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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have a nucleus on their capsule
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do not contain a nucleus
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can live in environments with and without oxygen
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None of the above
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Detailed explanation-1: -Bacteria are prokaryotes. A prokaryote is a simple, single-celled organism that lacks a nucleus and membrane-bound organelles. The majority of prokaryotic DNA is found in a central region of the cell called the nucleoid . So, bacteria have DNA in their cytoplasm.
Detailed explanation-2: -Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple structure.
Detailed explanation-3: -All the prokaryotic organisms lack membrane-bound organelles and a well-defined nucleus. Since bacteria are prokaryotic organisms, they do not have a nucleus.
Detailed explanation-4: -Bacteria, of course, have no nucleus and therefore also nuclear membrane. genetic information-DNA is organized into numerous chromosomes and is packaged in the nucleus. The nucleus is bounded by a membrane mRNA, tRNA and rRNA are made in the nucleus and shipped out into the cytoplasm.
Detailed explanation-5: -They help in replication as well as carry genetic material. In prokaryotes, the DNA is arranged in the irregular-shaped region known as the nucleoid. Hence we can say that the prokaryotes can survive without a nucleus.