The nuclear envelope consists of two parallel | vedclass

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(B) The nuclear envelope is a double-membrane structure that encloses the nucleus in eukaryotic cells.It consists of two parallel membranes,the inner

Vedclass · Accepted Answer

$100$ to $500 \mathring A$

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(B) The nuclear envelope is a double-membrane structure that encloses the nucleus in eukaryotic cells.It consists of two parallel membranes,the inner and outer nuclear membranes.The space between these two membranes is known as the perinuclear space (or perinuclear cisterna).The width of this perinuclear space typically ranges from $10$ to $50 	ext{ nm}$,which is equivalent to $100$ to $500 \mathring A$ $(1 	ext{ nm} = 10 \mathring A)$.Therefore,the correct option is $B$.

Column-$I$	Column-$II$
$(1)$ Chromosome arms are of equal length	$(a)$ Submetacentric
$(2)$ One arm of the chromosome is shorter	$(b)$ Acrocentric
$(3)$ One arm is extremely long and the other is very short	$(c)$ Telocentric
$(4)$ Terminal centromere	$(d)$ Metacentric

The nuclear envelope consists of two parallel membranes with a space between them called the perinuclear space,which is about:

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