S - Statement: RNA and protein molecules move | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The nuclear envelope consists of two parallel membranes with a space between them called the perinuclear space.These membranes are interrupted by

Vedclass · Accepted Answer

Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.

Vedclass · Answer

(A) The nuclear envelope consists of two parallel membranes with a space between them called the perinuclear space.These membranes are interrupted by minute pores,known as nuclear pores,which are formed by the fusion of the two membranes.These nuclear pores act as passages for the movement of $RNA$ and protein molecules in both directions between the nucleoplasm and the cytoplasm.Therefore,both the statement $(S)$ and the reason $(R)$ are correct,and $R$ is the correct explanation of $S$.

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.

$S$ - Statement: $RNA$ and protein molecules move between the nucleoplasm and the cytoplasm.
$R$ - Reason: Nuclear pores are present at several locations in the nuclear envelope of the nucleus.

Similar Questions

Where is the satellite found?

The terminal end of a chromosome is called

Balbiani discovered a special type of chromosome in the salivary gland of $Chironomus$ larvae,which are recognized by the presence of:

$A$ chromosome having a sub-terminal centromere is called:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$S$ - Statement: $RNA$ and protein molecules move between the nucleoplasm and the cytoplasm.$R$ - Reason: Nuclear pores are present at several locations in the nuclear envelope of the nucleus.