Customer center

We are a boutique essay service, not a mass production custom writing factory. Let us create a perfect paper for you today!

Example research essay topic: Endoplasmic Reticulum Golgi Apparatus - 1,120 words

NOTE: Free essay sample provided on this page should be used for references or sample purposes only. The sample essay is available to anyone, so any direct quoting without mentioning the source will be considered plagiarism by schools, colleges and universities that use plagiarism detection software. To get a completely brand-new, plagiarism-free essay, please use our essay writing service.
One click instant price quote

Damn Near Everything There Is To Know About Cells: Biology Cell Report There are many parts of a cell, they all have specific duties, and are all needed to continue the life of the cell. Some cells exist as single-celled organisms that perform all of the organisms metabolism within a single cell. Such single-celled organisms are called unicellular. Other organisms are made up of many cells, with their cells specialized to perform distinct metabolic functions. One cell within an organism may be adapted for movement, while another cell carries out digestion. The individual cells no longer carry out all life functions, but rather depend on each other.

Many-celled organisms are called multicellular. When a group of cells function together to perform an activity, they form a tissue. The cells of a human are organized into tissues such as muscle and nerve tissues. Plant tissues include those of the stem and root.

Many cells in tissues are linked to each other at contact sites called cell junctions. Cell junctions help maintain differences in the internal environment between adjacent cells, help anchor cells together, and allow cells to communicate with one another by passing small molecules from one cell to another. Groups of two or more tissues that function together make up organs. An organ system is a group of organs that work together to carry out major life functions. Eukariotic Cell Structure: Boundaries and Control: Plasma Membrane The plasma membrane is sometimes called the cell membrane, or the cellular membrane.

It is the outermost part of the animal cell, and its purpose is to enclose the cell, and change shape if needed. The cell membrane is capable of allowing materials to enter and exit the cell. Oxygen and nutrients enter, and waste products such as excess water leave. The plasma membrane helps maintain a chemical balance within the cell. Cell wall The cell wall is an added boundary to the cell.

It is relatively inflexible, and surrounds the plasma membrane. The cell wall is much thinker than the plasma membrane and is made of different substances in different organisms. The cells of plants, fungi, almost all bacteria, and some protists have cell walls. Animal cells have no cell walls. Plant cells contain cellulose molecules, which form fibers. This fibrous cellulose of plants provides the bulk of the fiber in our diets.

Chitin, a nitrogen-containing polysaccharide, makes up the cell walls of fungi. Nucleus The nucleus of the cell is the organelle that manages cell functions in a eukaryotic cell. The nucleus contains DNA, the master instructions for building proteins. DNA forms tangles of long strands called chromatin, which is packed into identifiable chromosomes when the cells are ready to reproduce. Also within the nucleus is the nucleolus, a region that produces tiny cell particles that are involved in protein synthesis These particles, called ribosomes, are the sites where the cell assembles enzymes and other proteins according to directions of the DNA.

Assembly, Transport, and Storage: Cytoplasm The material that lies outside the nucleus and surrounds the organelles is the cytoplasm, a clear fluid that is a bit thinner than toothpaste gel. It usually constitutes a little more than half the volume of a typical animal cell. Endoplasmic Reticulum The endoplasmic reticulum (ER) is a folded membrane that forms a network of interconnected compartments inside the cell. The ER membranes contain the enzymes for almost all of the cells lipid synthesis, they serve as the site of lipid synthesis in the cell.

The ER functions as the cells delivery system. Some parts of the ER are studded with ribosomes. In the cell, the sites of protein assembly are the ribosomes. Golgi Apparatus The Golgi apparatus main purpose is to store materials.

The Golgi apparatus is a series of closely stacked, flattened membrane sacs that receives newly synthesized proteins and lipids from the ER and distributes them to the plasma membrane and other cell organelles. Proteins are transferred from the ER to the Golgi apparatus in small, membrane-bound transport packages. These packages, called vesicles, have pinched off from the membrane of the ER and contain proteins. The Golgi apparatus modifies the proteins chemically, then repackages them in new vesicles for their final destination in the cell. They may be incorporated into the cell structures, expelled, or remain stored for later usage. Vacuole A vacuole is a sac of fluid surrounded by a membrane.

Vacuoles often store food, enzymes, and other materials needed by cells, and some vacuoles store waste products. A plant cell has one large vacuole that stores water and other substances. Lysosomes In addition to the assembly and storage of macromolecules, cells also can disassemble things. Lysosomes, organelles that contain digestive enzymes, digest excess or worn out cell parts, food particles, and invading viruses or bacteria. Mitochondria Mitochondria are organelles in which food molecules are broken down to release energy. This energy is then stored in other molecules that can power cell reactions easily.

A mitochondrion has an outer membrane and a highly folded inner membrane. As with ER, the folds of the inner membrane provide a large surface area in a small space. Energy is produced on the inner folds. Chloroplasts Chloroplasts transform light energy directly into usable chemical energy and store that energy in food molecules. These foods include sugars and starches. Chloroplasts contain the molecule chlorophyll, a green pigment that traps the energy from sunlight and gives plants their green color.

The chloroplast belongs to a group of plant organelles called plastids, which are used for storage. Some plastids store starches or lipids, whereas others contain pigments, molecules that give color. Structures for Support and Locomotion: The cytoskeleton is a network of thin, fibrous elements that act as a sort of scaffold to provide support for organelles. It also helps maintain cell shape in a manner similar to the way poles maintain the shape of a tent. The cytoskeleton is usually composed of microtubules and micro filaments.

Microtubules are thin, hollow cylinders made of protein. Micro filaments are thin, solid protein fibers. Microtubules and micro filaments make up most of the sytoskeleton. Cilia Cilia are only contained in some cells.

They are short, numerous, hairlike projections out of the plasma membrane. Cilia tend to occur in large numbers on a cells surface, and their beating activity is usually coordinated. Flagella Flagella are longer projections that move with a whip like motion. Cells that have flagella only have one or two per cell.

In single-celled organisms, cilia and flagella are the major means of locomotion. Sperm cells of animals and some plants move by means of flagella. Organisms that contain many cells, including humans, have cilia that move fluids over a cells surface, rather than moving the cell itself.


Free research essays on topics related to: endoplasmic reticulum, golgi apparatus, single celled, plasma membrane, cell walls

Research essay sample on Endoplasmic Reticulum Golgi Apparatus

Writing service prices per page

  • $18.85 - in 14 days
  • $19.95 - in 3 days
  • $23.95 - within 48 hours
  • $26.95 - within 24 hours
  • $29.95 - within 12 hours
  • $34.95 - within 6 hours
  • $39.95 - within 3 hours
  • Calculate total price

Our guarantee

  • 100% money back guarantee
  • plagiarism-free authentic works
  • completely confidential service
  • timely revisions until completely satisfied
  • 24/7 customer support
  • payments protected by PayPal

Secure payment

With EssayChief you get

  • Strict plagiarism detection regulations
  • 300+ words per page
  • Times New Roman font 12 pts, double-spaced
  • FREE abstract, outline, bibliography
  • Money back guarantee for missed deadline
  • Round-the-clock customer support
  • Complete anonymity of all our clients
  • Custom essays
  • Writing service

EssayChief can handle your

  • essays, term papers
  • book and movie reports
  • Power Point presentations
  • annotated bibliographies
  • theses, dissertations
  • exam preparations
  • editing and proofreading of your texts
  • academic ghostwriting of any kind

Free essay samples

Browse essays by topic:

Stay with EssayChief! We offer 10% discount to all our return customers. Once you place your order you will receive an email with the password. You can use this password for unlimited period and you can share it with your friends!

Academic ghostwriting

About us

© 2002-2024 EssayChief.com