Which of the following is true for a cell tha | vedclass

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(D) The nucleolus is the site of ribosomal $RNA$ $(rRNA)$ synthesis and ribosome assembly. Since proteins are synthesized by ribosomes,cells that requ

Vedclass · Accepted Answer

Both $A$ and $B$.

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(D) The nucleolus is the site of ribosomal $RNA$ $(rRNA)$ synthesis and ribosome assembly. Since proteins are synthesized by ribosomes,cells that require high rates of protein synthesis (such as secretory cells or rapidly growing cells) need a large number of ribosomes. To meet this demand,these cells often exhibit a prominent,large nucleolus or multiple nucleoli to facilitate the rapid production of ribosomal subunits. Therefore,both $A$ and $B$ are correct characteristics of such cells.

Column $I$ (Chromosome)	Column $II$ (Explanation)
$1$. Centromere	$a$. Disc-shaped plate where spindle fibres get attached during cell division.
$2$. Secondary constriction	$b$. Long unbranched slender highly coiled $DNA$.
$3$. Kinetochore	$c$. Place where $2$ chromatids are joined together.
$4$. Chromatonema	$d$. Nucleolus gets organised at this place.

Which of the following is true for a cell that is actively synthesizing proteins in large quantities?

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