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Prokaryotic Cell

"In prokaryot...

Question

"In prokaryotic cell (70 S) ribosomes are present" . what is this 70 S ?

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Solution

There are two type of ribosomes, 70S and 80S. Only ribosome of 70S type are present in prokaryotes.

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Q. Which is correct option amongst the following statements?
(a) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are absent in prokaryotic cells.
(b) Nuclear membrane, chloroplast, mitochondria, microtubules and pili are present in eukaryotic cells
(c) Ribosomes are 70S in prokaryotic cells and mitochondria. They are 80 S in animal cells.

Q. The ribosomal subunits present in 70S ribosomes are

Q. Read the following statements and identify the correct option(s) given.
I. A prokaryotic cell lack nuclear membrane, chloroplasts, mitochondria, microtubules and different kinds of pili.
II. In a eukaryotic cell, the nuclear membrane, chloroplast, mitochondria and pili are present.
III. In a prokaryotic cell, the ribosome is of 70S type and in mitochondria of the eukaryotic animal cell, the ribosome is of the 80S type.

Q. The 70S prokaryotic ribosome can be split into:

Q. Assertion :Ribosomes are non-membrane bound organelles found in the prokaryotic cells only. Reason: Ribosomes are present only in the cytoplasm.

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