Nucleus Organelles

Improved Essays
The nucleus, controlling all of the cell's activities and containing its genetic information, remains the most important organelle of the cell today. Although the first observations of the nucleus can be dated back to the 1700s, Robert Brown is often the man given credit for its discovery. In 1831, he noticed an opaque mark in a plant cell. Brown was not aware at the time, but he had sparked thought for many scientists. Soon it was discovered that the nucleus could be found in more than just plant cells. To this day, the nucleus is praised for being the “CEO” of the cell.
The main function of the nucleus is to control the cell's activities. The nucleus is responsible for controlling the cell’s growth, intermediary metabolism, protein synthesis (or the formation of RNA), and reproduction/cell division. The nucleus is also responsible for containing the cell’s genetic information in the form of DNA, or deoxyribonucleic acid. At least 6 feet of DNA can be found within the nucleus. DNA is divided into molecules where chromosomes can be found. In order for DNA to function, it has to have a precise order inside the nucleus.
…show more content…
It is coated with nuclear pores that allow some materials inside the nucleus, while not permitting access to others. Eukaryotic cells only contain one nucleus that appear to have a rounded or oval like structure. It is found inside the cytoplasm of eukaryotic cells. Animal and plant cells fall under the category of eukaryotic cells. Prokaryotic cells, such as bacteria, do not contain a nucleus. As shown under the transmission electron microscope, the nucleus is located towards the center of the cell and can be identified as the large dark

Related Documents

  • Decent Essays

    Science Assignment: Q2 Part: Acrosome Function: The acrosome is the part on the head of the sperm. It is located on the tip and it is made of chemicals. The function of the acrosome is to dissolve the membrane of the egg so the sperm can fertilize it.…

    • 299 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Biology Unit 4 Lab Report

    • 543 Words
    • 3 Pages

    b-The nucleus is an organelle found in eukaryotic cells. Inside its fully-enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes. The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle.…

    • 543 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Its size is 0.025 µm in diameter. 5) Nucleus: - Contains the cell’s genetic material (DNA) and controls all the cell’s processes. - Its size is 5-10 µm in…

    • 152 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    There are many organelles in the animal cell. There is the nucleus, endoplasmic reticulum, cell membrane, vacuoles, lysosomes, mitochondria, cytoplasm, ribosomes, & golgi apparatus. The nucleus directs all the cells activities,including reproduction. Endoplasmic Reticulum is a network of membranous tubules within the cytoplasm continuous with the nuclear membrane;It usually has ribosomes attached The cell membrane protects the cell and regulates what substances can enter and leave. Some animal cells have vacuoles that store food, water, & waste.…

    • 238 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    Synthesis Of Dna Lab

    • 137 Words
    • 1 Pages

    A cell is made up of many parts which include the cell membrane, organelles, and cytoplasm. DNA, which stands for deoxyribonucleic acid, is also found inside of a cell. DNA is found in the nucleus of plant and animal cells. DNA contains the blueprint for development, survival, and reproduction. It is made of nitrogen containing bases which are paired through hydrogen bonds; adenine, thymine, cytosine, and guanine.…

    • 137 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    Prokaryotes are single cell organisms that do not have organelles or any internal membrane-bound structures, due to that they do not have a nucleus however they instead have a single chromosome. Unlike prokaryotes, eukaryotes have nucleus which are surrounded by a membrane and its DNA is bound together by proteins into chromosomes.…

    • 52 Words
    • 1 Pages
    Decent Essays
  • Improved Essays

    Ap Biology 3.1.3

    • 634 Words
    • 3 Pages

    3.2 1. The cytoskeleton provides support for the cell and helps the organelles in the cell move. 2. The nucleus is protected by a double membrane which has pores that provide a pathway to the cytoplasm. 3.…

    • 634 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Eukaryotic Cells

    • 1006 Words
    • 5 Pages

    Introduction: Prokaryotic cells are cells that do not have membrane bound organelles, such as ribosomes and include organisms such as bacteria. In contrast, eukaryotic cells contains organelles and are often more complex organisms (Karp, 2010). These cells have some similar features such as the plasma membrane and the use of ribosomes to make proteins. However, there are also significant differences between prokaryotic and eukaryotic organisms.…

    • 1006 Words
    • 5 Pages
    Improved Essays
  • Decent Essays

    Mutations are good? How could anyone say this?!?! Mutations are what cause Cancer. Mutations are what cause Alzheimer's and other horrible diseases. Today we’re going to talk about exactly why mutations in the DNA are bad for humans and living organisms.…

    • 124 Words
    • 1 Pages
    Decent Essays
  • Decent Essays

    The Synthesis Of RNA

    • 274 Words
    • 2 Pages

    A. RNA doesn’t have thymine. RNA uses Uracil. RNA can leave the nucleus. B. mRNA- mRNA is called the messenger DNA. This RNA can leave the nucleus and delivers information to other parts of the cell.…

    • 274 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    The cri du chat syndrome is a rare hereditary disease that is characterized by the fact that the affected child, baby, have a cry similar to a cat's meow (cry of a cat = cri du chat). According to the ¨Cri-Du-Chat Syndrome: Clinical Profile and Chromosomal Microarray Analysis¨ article journal by Espirito Santo and partners, the cri du chat syndrome is caused by a specific alteration of genetic material: the loss of a part of the filiform structures in the nucleus of the cell that carry the genetic material (one of the arms of one of the chromosomes: the short arm of chromosome 5). This genetic modification is usually occur spontaneously after fertilization in cell division of the egg, that is to say, as a spontaneous mutation. The cri du chat…

    • 595 Words
    • 3 Pages
    Improved Essays
  • Great Essays

    Essay On Eukaryotic Cells

    • 956 Words
    • 4 Pages

    It manages the cells activities for reproduction, growth and metabolising processes. Nucleolus situated internally…

    • 956 Words
    • 4 Pages
    Great Essays
  • Improved Essays

    Unit 18 - Genetics (Assignment 1) Task 1. Deoxyribonucleic acid (DNA for short) is genetic material that carry’s the majority of information for development growth and many other functions. DNA is located in the nucleus of a cell. DNA has a double helix structure and is formed by a series of bases these are Adenine , Cytosine , Guanine and Thymine.…

    • 782 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    B) Compare & contrast: Plant & Animal cells. Although plant and animal cells contain numerous similarities, they also feature prevalent significant differences. Animal and plant cells not only have functional differences but also have structural differences. Plant and animal cells both have a nucleus which is the control centre of the cell, it controls how the cell develops and how it reproduces. DNA is the genetic makeup of a cell, organ and body systems, the DNA in a cell is held and organised into discrete chromosomes by the nucleus.…

    • 1334 Words
    • 6 Pages
    Improved Essays
  • Great Essays

    To start off, I am going to start with the one in charge of the whole cell or town. The one that is in charge of the cell is the nucleus. In a town it is the mayor or the town hall. There is a reason why I way that is because the mayor makes the laws in the town hall, so basically the mayor is the nucleolus and the town hall is the nucleus.…

    • 1237 Words
    • 5 Pages
    Great Essays