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Chromosomes with kinetochores

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Directs Protein Synthesis

1) Synthesizes mRNA (instructions from DNA).

2)mRNA transported to cytoplasm via nuclear pores

3)Once mRNA reaches cytoplasm, ribosomes translate mRNA's genetic message.
=>creates primary structure of a specific polypeptide (transcribing and translating)

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Chromosome with kinetochore

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Nucleolus

-round body located inside the nucleus

-Uses instructions from DNA to synthesize Ribosomal RNA (rRNA) [essential to protein synthesis]

-ALSO proteins imported from cytoplasm are assembled with rRNA into subunits (large and small) of ribosomes

=>subunits exit nucleus through nuclear pores to cytoplasm in order to assemble into a full ribosome

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Chromatin

The complex of DNA and proteins making up chromosomes

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Chromosomes

-carry genetic information (DNA)

-contains one long DNA molecule
associated with many proteins [help to coil up DNA to fit in nucleus]

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Nuclear Lamina

-netlike array of proteins that maintains shape.

-Mechanically support nuclear envelope

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Pore Complex

-protein structure lines each pore

-plays a role in regulation of movement of proteins and RNA's

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Nuclear envelope

-"membrane"

-double lipid bilayer (inner and outer)

-seperates the nucleus from cytoplasm

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The nucleus has 2 primary functions:

It is responsible for storing the cell’s hereditary material or the DNA.

It is responsible for coordinating many of the important cellular activities such as protein synthesis, cell division, growth and a host of other important functions.

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Chromosome

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Every chromosomes essentially has a primary constriction or the centromere on the sides of which disc shaped structures called kinetochores are present.

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Histones

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Nucleus

contains most of the genes in the cell

-some in mitochondria

-some in chloroplasts

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Centromere

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A nucleus is a membrane bound organeele that contains the cells chromosomes pores in the nucleus  the nucleus is an organeele genetic Material DNA.

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There are four types of chromosomes based on the position of centromere
* Metacentric
* Sub-metacentric
* Acrocentric
* Telocentric

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• Nucleus consists of one or more spherical bodies called nucleoli.
• Nucleus is surrounded by the nuclear membrane.
• Nucleus regulates the metabolism of the cell by synthesizing various enzymes.

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Kinetochores

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The chromosomes in which the centromere is present in the middle and divides the chromosome into two equal arms is known as a metacentric chromosome. During anaphase, they appear V-Shaped. The chromosome in which the centromere is slightly away from the middle region is known as a sub-metacentric chromosome.The chromosomes in which the centromere is present in the middle and divides the chromosome into two equal arms is known as a metacentric chromosome. During anaphase, they appear V-Shaped. The chromosome in which the centromere is slightly away from the middle region is known as a sub-metacentric chromosome.The chromosomes in which the centromere is present in the middle and divides the chromosome into two equal arms is known as a metacentric chromosome. During anaphase, they appear V-Shaped. The chromosome in which the centromere is slightly away from the middle region is known as a sub-metacentric chromosome.

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Nucleus is a membrane bound organelle that contains the cell's chromosome

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Kinetochores are a complex of proteins associated with the centromere of a chromosome during cell division, to which the microtubules of the spindle attach

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Chromosome

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The plant cell nucleus is present inthe centre of the cell but the animal cell nucleus is present at  teh leaft side of the cell .

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Nucleus

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DNA and some basic proteins are known as Histone

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The nucleus matrix is also known as nucleoplasm it contains nucleoloous and chromatic

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1. Nucleis contain nearly all pf the cells DNA.
2. Nucleur envelope seprates the fluid inside the nucleus called NUCLEOPLASM..
3.Nuclear envelope consist of two membranes ( INNER AND OUTER)
4. Nuclear pores provide aqueous channels..
5.Nucleus controls and regulates the activities of the cells and carries the genes structure that carry the heridity information..
6.Nucleus ia considered as the most important  structure of eukaryotic cells .
7.Nucleus serves function of information storage retrieval and duplication of genetic information.
8. It is a double membrane bound organelles that herbours the genetic material in the form of chromatin..
9.Nucleus is the collection of particles called protons and neutrons .
10.it synthesis various enzymes

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Fuction-The key function of the nucleus is to control cell growth and multiplication. This involves regulating gene expression, initiating cellular reproduction, and storing genetic material necessary for all of these tasks. In order for a nucleus to carry out important reproductive roles and other cell activities, it needs proteins and ribosomes.The key function of the nucleus is to control cell growth and multiplication. This involves regulating gene expression, initiating cellular reproduction, and storing genetic material necessary for all of these tasks. In order for a nucleus to carry out important reproductive roles and other cell activities, it needs proteins and ribosomes.

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Nucleus plays a central role in cellular reproduction

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Loose and indistinct network of nucleoprotein fibres in nucleus is called chromatin

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• Nucleus covers the most part of the cell as compared with other organelles.
• During cell division the nucleus divides itself first of all other organelles.
• Gell like matrix in nucleus is called nucleoplasm.
• All nuclear components are suspended in nucleoplasm.
• Nucleolus is the largest structure in nucleus.
• Nucleolus produce and assemble ribosomes of cell.

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nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.

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Nucleus is the most important part of the cell.

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It contains the hereditary information of the cell.

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Palak Mungali
1.Nucleus is a cell organelle present in centre of the cell.
2. It was firstly discovered by Robert Brown in 1831.
3.It is found in eukaryotic cells .
4.It consists of genetic material Called Genes organised as DNA molecules.
5.It also controls and regulates growth and metabolism type activities of the cell.
6. Small bodies called nucleoli are present inside it.

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The structure of nucleus is given below with parts mentioned on it.

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A nucleus is a membrane-bound organelle that contains the cell's chromosomes. Pores in the nuclear membrane allow for the passage of molecules in and out of the nucleus.

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The Size of DNA is around 6 feet in each cell pf human which is tightly packed with proteins.

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sandeep kaur
Nucleus is a cell organelle.
It was discovered by Robert brown in 1831.
Nucleus is composed of Nucleoplasm, Nucleolus, Nuclear pore and Nuclear membrane.
Nucleus has a loose and indistinct network of nucleoprotein fibres called chromatin.
At a number of places the nuclear envelope is interrupted by minute pores.
Larger and more numerous nucleoli are present in cells actively carrying out protein synthesis.

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1.The most integral component of the cell is the nucleus
2.It was discovered by Robert brown.
3.The nucleus is an organelle that is present in most eukaryotic cells.
4.
Its structure consists of the following important parts:
The nuclear membrane
Chromosome
Nucleoplasm
Nucleolous
5. It controls the functions of the cell by regulating gene expression

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It is site for active ribosomal RNA synthesis

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It is bound by a rigid nuclear envelop.

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Nucleus is the central part of the cell. It controls the functioning of the cell.

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Nucleoli has spherical structure

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Nucleus was discovered by Robert Brown in 1831

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The nuclear matrix contains nucleus and chromatin

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KASHISH GUPTA..

The nucleus has been clearly explained as a membrane-bound structure that comprises the genetic material of a cell.

It is not just a storage compartment for DNA, but also happens to be the home of some important cellular processes.

First and foremost, it is possible to duplicate one’s DNA in the nucleus. This process has been named DNA Replication and produces an identical copy of the DNA.

Producing two identical copies of the body or host is the first step in cell division, where every new cell will get its own set of instructions.

Secondly, the nucleus is the site of transcription. Transcription creates different types of RNA from DNA. Transcription would be a lot like creating copies of individual pages of the human body’s instructions which may be moved out and read by the rest of the cell.

The central rule of biology states that DNA is copied into RNA, and then proteins.

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Contain nuceousplasm ,nucleolus , nuclear pore ,nuclear membrane.

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Space between parallel membrane is called perinuclear space

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the nucleus is the site of transcription. Transcription creates different types of RNA from DNA. Transcription would be a lot like creating copies of individual pages of the human body’s instructions which may be moved out and read by the rest of the cell

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Nucleus Function

Following are the important nucleus function:

It contains the cell’s hereditary information and controls the cell’s growth and reproduction.

The nucleus has been clearly explained as a membrane-bound structure that comprises the genetic material of a cell.

It is not just a storage compartment for DNA, but also happens to be the home of some important cellular processes.

First and foremost, it is possible to duplicate one’s DNA in the nucleus. This process has been named DNA Replication and produces an identical copy of the DNA.

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Nucleus is covered by dual layer called nuclear membrane

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KASHISH GUPTA..
A nucleus is defined as a double-membraned eukaryotic cell organelle that contains the genetic material.
the nucleus is found only in eukaryotes and is the defining characteristic feature of eukaryotic  organisms.

It contains the cell’s hereditary information and controls the cell’s growth and reproduction.

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Structure Of Nucleus

Typically, it is the most evident organelle in the cell.

The nucleus is completely bound by membranes.

It is engirdled by a structure referred to as the nuclear envelope.

The membrane distinguishes the cytoplasm from the contents of the nucleus

The cell’s chromosomes are also confined within it.

DNA is present in the Chromosomes, and they provide the genetic information required for the creation of different cell components in addition to the reproduction of life.

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The nuclear matrix or the nucleoplasm contains nucleolus and chomatin .the nucleoli are spherical structure present in the nucleoplasm

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The nucleus was the first organelle discovered by scientists.It usually takes 10% of cell volume.The nuclear envelope breakdown during cell division but reform after two cells separate.The important function of the nucleus is to secure the genetic material in the form of DNA.

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A nucleus is defined as a double-membraned eukaryotic cell organelle  that contains the genetic material.

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Nucleus has highly extended nucleoprotein fibers known as chromatin

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Nucleus was discovered by Robert Brown in 1831

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It was first discovered by robert brown in 1831.

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The nucleus is a pivotal organelle responsible for regulating almost all forms of cellular activities. Mostly, every type of cell that exists is categorized on the basis of the absence or presence of the nucleus within its cell (categorized either as a prokaryotic or eukaryotic cell.)