country
$20 Bonus + 25% OFF
Securing Higher Grades Costing Your Pocket? Book Your Assignment at The Lowest Price Now!
Add File

Error goes here

Nucleus, Its Function And Structure

Referencing Styles : APA | Pages : 1

Nucleus, Its Function And Structure

The cell is the functional unit of life. The cell consist of various functional organelles, nucleus is one of the organelle having multiple function in the cell. It is present in most of the cell but there are exceptions like blue-green algae and bacteria. Nucleus is known as the “control center” of the cell. It was discovered by Robert Brown in the year 1831. In the year 1774, the nucleolus was discovered by Felice Fontana in eel cell. The nucleus is basically a membrane bound organelle found in eukaryotic cells. Most of the eukaryotes have single nucleus but very few cell such as red-blood cell of mammalian have no nuclei and others like osteoclasts have many nuclei. The nucleus contains cell genome, except for small fraction of mitochondrial DNA, which is organized as multiple long linear DNA molecules.

Structure of the Nucleus

It is the largest organelle embedded inside the cell. It is typically round and tube-like structure which is bounded by double membrane known as nuclear membrane. Each layer of membrane contains plasma-membrane like structure which is 4 nanometer to 6 nanometer in width. The membrane contains tiny gaps which are known as nuclear pores. The space between the double membranes is particularly known as nuclear pore which is semi-permeable in nature.

The membrane forms a continuous network with the endoplasmic reticulum of the cell. The membrane acts as a barrier between the contents of the nucleus and the cytoplasm. The nucleus consists of nucleoplasm, the nucleolus and chromatin fibers. Usually a cell contains one nucleus, but under some condition the nucleus tends to divide but the cytoplasm does not. The division produces a multinucleate cell called syncytium. The substances present in the nucleus other than the chromatin is called as nucleoplasm. It usually contains enzymes and complexes which are necessary for synthesis of RNA molecule and DNA synthesis. There are one or more than one nucleoli present in the nucleus. The nucleolus consists of proteins associated with RNA. The nucleus is responsible for all the genetic activities of the cell. 


 Function of nucleus


The main function of nucleus is to store the hereditary material, or DNA, and it is responsible for carrying out the cell activities including intermediary metabolism, growth, protein synthesis and reproduction that is division of cell.

Nucleus contains of all the genetic information in its chromatin. The genetic information is maintained in the form of spirally arranged strands called as DNA; this DNA is arranged in the form threads called as chromatin. The chromatin threads of DNA are wrapped around a set of histone proteins. The chromatin condenses into chromosomes as the DNA can be transported to daughter cells, when the cell undergoes division. The DNA replication takes place inside the nucleus.

The nucleus is also responsible for transcription; this is the most important process which occurs in the nucleus. The genetic information present on DNA is transcribed in a molecule which is known as messenger RNA which provides the genetic information required in order to form protein.

The nucleolus is responsible for making ribosomal subunits from proteins and ribosomal RNA. The nucleolus sends the subunits to the rest of the cell where they can combine into complete ribosomes. The ribosomes synthesis proteins and therefore, the nucleolus are responsible for synthesizing proteins in the cell.
The nucleus helps in maintaining, cellular metabolism. It is done by controlling the synthesis of particular types of enzymes.

Due to structural proteins, synthesized by the nucleus, helps the newly formed cells to grow in size.

The difference between Chromosomes, Chromatids and Chromatin.

The DNA is the blueprint of life and is organized into structures called the chromosomes. Well in prokaryotic cells the chromosomes are in circular shape but in case of eukaryotic cells these are in linear strands. The number of chromosomes differs from organism to organism.

When all the chromosomes are add up, each cell contains 2m of DNA and this DNA needs to be fit into the nucleus of cell. It is like trying to stuff a piece of string into a tiny bead which is smaller than 1cm. In order to make this possible the cells are featured by ingenious packaging system. The DNA is wrapped around special proteins called histones and it forms into DNA-protein complex known as chromatin.

During cell division in S-phase, the replication of DNA takes place which produces two identical copies of DNA, connected to each other at the centromere. This X-like structure is known as sister chromatid pair or each as chromatids.



The above picture showing chromosomes, chromatin and chromatids

Solutions

OR

MyAssignmenthelp.com has gained the status of premier assignment help provider in USA. The combination of highly qualified experts, wide range of service and affordable price play a significant role behind our overwhelming popularity among the students in USA. Some of our popular writing services include Marketing assignment help, mechanical engineering assignment help, English assignment help, taxation assignment help, electrical engineering assignment help.

Save Time & improve Grade

Just share requirement and get customized Solution.

watch
question
We will use e-mail only for:

arrow Communication regarding your orders

arrow To send you invoices, and other billing info

arrow To provide you with information of offers and other benefits

Add File

Error goes here

1,543,628

Orders

4.9/5

Overall Rating

5,108

Experts

Our Amazing Features

delivery

On Time Delivery

Our writers make sure that all orders are submitted, prior to the deadline.

work

Plagiarism Free Work

Using reliable plagiarism detection software, Turnitin.com.We only provide customized 100 percent original papers.

time

24 X 7 Live Help

Feel free to contact our assignment writing services any time via phone, email or live chat. If you are unable to calculate word count online, ask our customer executives.

subject

Services For All Subjects

Our writers can provide you professional writing assistance on any subject at any level.

price

Best Price Guarantee

Our best price guarantee ensures that the features we offer cannot be matched by any of the competitors.

Our Experts

Assignment writing guide
student rating student rating student rating student rating student rating 5/5

1265 Order Completed

97% Response Time

James Cook

Masters in Management

Wellington, New Zealand

Hire Me
Assignment writing guide
student rating student rating student rating student rating student rating 5/5

2279 Order Completed

97% Response Time

Zachary Perez

PhD in Computer Science and Information System

Washington, United States

Hire Me
Assignment writing guide
student rating student rating student rating student rating student rating 5/5

234 Order Completed

100% Response Time

Samantha Ji

PhD in Chemistry with Specialization in Organic

Singapore, Singapore

Hire Me
Assignment writing guide
student rating student rating student rating student rating student rating 5/5

2632 Order Completed

100% Response Time

Albert Ambrosio

MSc in Nursing

London, United Kingdom

Hire Me

FREE Tools

plagiarism

Plagiarism Checker

Get all your documents checked for plagiarism or duplicacy with us.

essay

Essay Typer

Get different kinds of essays typed in minutes with clicks.

edit

GPA Calculator

Calculate your semester grades and cumulative GPa with our GPA Calculator.

referencing

Chemical Equation Balancer

Balance any chemical equation in minutes just by entering the formula.

calculator

Word Counter & Page Calculator

Calculate the number of words and number of pages of all your academic documents.

Refer Just 5 Friends to Earn More than $2000

Check your estimated earning as per your ability

1

1

1

Your Approx Earning

Live Review

Our Mission Client Satisfaction

Able to get my work done after few changes, which were done as per suggestion provided by us. Appreciate their positive approach for this

flag

User Id: 361833 - 15 Jan 2021

Australia

student rating student rating student rating student rating student rating

Amazing experience with you guys. I got 20/20. You are the best in the market i tried multiple sites but you guys gave best output.

flag

User Id: 427239 - 15 Jan 2021

Australia

student rating student rating student rating student rating student rating

good paper, thank you very much. i am looking forward to working with you. Recommended

flag

User Id: 536208 - 15 Jan 2021

Australia

student rating student rating student rating student rating student rating

thanks a lot thanks a lot thanks a lot thanks a lot thanks a lot thanks a lot thanks a lot

flag

User Id: 553562 - 15 Jan 2021

Australia

student rating student rating student rating student rating student rating
Nucleus, Its Function And Stru... has been added in your library.
callback request mobile
Have any Query?