SCIENCE
CELL BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They have a nucleus.
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They have chlorophyll.
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They have mitochondria.
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They have ribosomes.
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Detailed explanation-1: -A nucleoid area, DNA and RNA serving as the cells’ genetic building blocks, ribosomes producing proteins, and a cytoplasm containing the cytoskeleton that arranges cellular components are all features of prokaryotic cells.
Detailed explanation-2: -All prokaryotes have chromosomal DNA localized in a nucleoid, ribosomes, a cell membrane, and a cell wall.
Detailed explanation-3: -All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol. The 70S ribosome is made up of a 50S and 30S subunits. The 50S subunit contains the 23S and 5S rRNA while the 30S subunit contains the 16S rRNA.
Detailed explanation-4: -Yes, ribosomes float freely in the cytoplasm of prokaryotes. Furthermore, ribosomes are divided into two subunits: the 30S and 50S subunits. Ribosomes in prokaryotes are compact structures that only contain RNA and proteins.
Detailed explanation-5: -They lack a nuclear membrane. Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent. The genetic material is present on a single chromosome. The histone proteins, the important constituents of eukaryotic chromosomes, are lacking in them. More items