CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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more advanced cells, are specialized, have 4 main parts-cell membrane, cytoplasm, nucleus, and organelles
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very simple cells, does not contain a nucleus or membrane bound organelles
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centrioles and more mitochondria
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None of the above
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Detailed explanation-1: -Prokaryotic cells are surrounded by a plasma membrane, but they have no internal membrane-bound organelles within their cytoplasm. The absence of a nucleus and other membrane-bound organelles differentiates prokaryotes from another class of organisms called eukaryotes.
Detailed explanation-2: -Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles.
Detailed explanation-3: -In prokaryotes, DNA is found in a central area of the cell known as the nucleoid, which is not surrounded by a nuclear membrane. Thus, Prokaryotic cells do not contain membrane-bound organelles.
Detailed explanation-4: -Eukaryotic cells are cells containing membrane-bound organelles and are the basis for both unicellular and multicellular organisms. In contrast, prokaryotic cells do not have any membrane-bound organelles and are always part of unicellular organisms.
Detailed explanation-5: -Membrane-bound organelles such as mitochondria and chloroplasts are not seen in unicellular prokaryotic organisms which belong to the Kingdom Monera. They are absent in Streptococcus which is a species of bacteria.