science biology about nucleoplasm , what is nucleoplasm

1. NUCLEOPLASM

2. WHAT IS NUCLEOPLASM OR
NUCLEAR MATRIX ?
•IT IS A TRANSPARENT SEMI-FLUID
AND COLLOIDAL SUBSTANCE WHICH
FILLS THE NUCLEUS.
•IT CONTAINS THE NUCLEOLUS AND
CHROMATIN.
•SOME OF THE PROTEIN IN
NUCLEOPLASM ARE ESSENTIAL FOR
SPINDLE FORMATION.

3. NUCLEOLUS
• NUCLEOLI ARE SPHERICAL STRUCTURES PRESENT IN THE
NUCLEOPLASM.
• IT IS A NON MEMBRANE BOUND STRUCTURE.
• SITE OF ACTIVE RIBOSOMAL RNA SYNTHESIS.
• NUCLEOLUS STORES NUCLEOPROTEINS.

4. DIFFERENCE BETWEEN
NUCLEOPLASM AND CYTOPLASM
cytoplasm nucleoplasm
• It lies outside the nucleus. • It lies inside the nucleus
• Single membrane envelope • Double membrane envelope.
• Possesses cell organelles • Possesses chromatin , matrix and nucleolus.
• Contains Endomembranes. • Endomembranes are absent

5. CHROMATIN
• NUCLEUS HAS A LOOSE AND INDISTINCT
NETWORK OF NUCLEOPROTEIN FIBRES CALLED
CHROMATIN.
• CHROMATIN OCCURS IN THE FORM OF FINE
OVERLAPPING AND COILED FIBRES WHICH
APPEAR TO PRODUCE A NETWORK CALLED
CHROMATIN RETICULUM.
• CHROMATINS ARE OF TWO TYPES
EUCHROMATIN AND HETERO CHROMATIN.

6. CHROMOSOME
.
• CHROMOSOMES ARE THREAD LIKE
STRUCTURES MADE UP OF DNA AND
HISTONES PROTEINS.
• DURING DIFFERENT STAGES OF CELL
DIVISION, CELLS SHOW STRUCTURED
CHROMOSOMES IN PLACE OF THE
CHROMATIN
• A HUMAN CELL HAS 23 PAIRS OF
CHROMOSOMES.

7. DIFFERENCE BETWEEN CHROMATIN AND
CHROMOSOMES
Chromatin chromosomes
• Uncondensed • Condensed
• Observable in the interphase
nucleus.
• Observable during nuclear
division.
• It is active in controlling
metabolism and other activities
of the cell.
• Chromosomes are mainly
meant for distribution of
genetic information to the
daughter cells.