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What is true about ribosomes?

These are found only in eukaryotic cells
These are self-splicing introns of some RNAs.
The prokaryotic ribosomes are 80S, where "S" stands for sedimentation coefficient
These are composed of ribonucleic acid and proteins.
Additional Questions

E. Coli about to replicate was placed in a medium containing radio active thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct?

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A genophore (nucleoid) consists of

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Protoplasm found inside the nucleus is known as

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If a cell has twice as much DNA as in a normal functional cell, it means that the cell ______.

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Assertion: A cell membrane shows fluid behaviour.
Reason: A membrane is a mosaic or composite of diverse lipids and proteins.

Answer

Which one of the following also acts as a catalyst in a bacterial cell?

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Plasmodesmata are located in narrow areas of _______.

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Cell was discovered by

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The spherical structured organelle that contains the genetic material is

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Which of the following statements are true about Endoplasmic Reticulum?
(a) Smooth Endoplasmic Reticulum makes lipids.
(b) It is also called the control center of the cell.
(c) It processes carbohydrates.
(d) It modifies chemicals that are toxic to the cell.

Answer
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