Organelles within a Prokaryotic Cell Essay

Submitted By jaywainwright3005
Words: 602
Pages: 3
Open Document
Jay Wainwright C12
Forensics Science
Tuesday 1ST October 2013

Organelles within a Prokaryotic Cell

Sources;

http://hyperphysics.phy-astr.gsu.edu/hbase/biology/prokar.html

http://biology.about.com/od/cellanatomy/ss/prokaryotes.htm

http://en.wikipedia.org/wiki/Nucleoid

http://www.biology-online.org/dictionary/Plasma_membrane

Prokaryotic cells are cells that lack a membrane-bound nucleus. The Greek language connotes that the term prokaryotes mean ‘before nuclei’. Prokaryotic cells tend to have very few internal structures, which are distinguishable under the microscope. Cells that are found within the monera kingdom such as bacteria and cyanobacteria (also referred to as being blue-green algae.) are prokaryotes.
Prokaryotic cells differ significantly from eukaryotic cells. They don't have a membrane-bound nucleus and instead of having chromosomal DNA, their genetic information is in a circular loop called a plasmid. Bacterial cells are very small, roughly 1-2µm in diameter and 10 µm long. Prokaryotic cells feature three major shapes: rod shaped, spherical, and spiral. Instead of going through elaborate replication processes like eukaryotes, bacterial cells divide by binary fission.

Image No 1; Diagram of a prokaryotic cell

The following table denotes the following organelles that are featured within a prokaryotic cell;

Organelles that are found within a prokaryotic cell;

Organelle
Function
Capsule
Found in some bacterial cells, the capsules main function is the process in which the outer covering of the cell protects the cell when it is engulfed by other organisms, assists in retaining moisture, and helps the cell holding on to surfaces and nutrients.
Cell Wall
The main occupation of the cell wall is to protect the bacterial cell. The cell wall also helps to maintain the main structures within the cell.
Cytoplasm
The cytoplasm within the prokaryotic cell is a gelatinous substance that consists mainly of water. Additionally, the cytoplasm consists of enzymes, salts, cell apparatus and various other organic compounds.
Flagellum
The flagellum is a long, whip-like protrusion that assists the prokaryotic cell during the process of cellular (locomotor) mobility.
Nucleoid DNA
The nucleoid is an irregularly-shaped region within the cell of a prokaryotic cell that may contains many/most of the genetic material. In contrast to the nucleus of a eukaryotic cell, it is not surrounded by a nuclear membrane. The genome of prokaryotic organisms generally is a circular, double-stranded piece of DNA, of which multiple copies may
Show More

Related Documents: Organelles within a Prokaryotic Cell Essay

Nothing Such as a Typical Cell Essay

essay ‘There is no such thing as a typical cell’. Discuss this statement? There is no such thing as a typical cell. Things can be identical but different in their function, different in their structure and behaviour. For example twins can be identical but they are still two different people. So as for cells there are different types of cells even thought they are all called cells, but this does not necessary means that they are typically the same. Cells may carry out the same function but different…

Words 790 - Pages 4

AP Bio Take Home Essay 3

Eukaryotes contain many unique and different membrane-bound organelles such as the endoplasmic reticulum and lysosomes which are specialized for specific jobs that help the cell survive and operate. One key membrane-bound organelle contained in eukaryotes is the endoplasmic reticulum (ER) which is responsible for the synthesizing and storing of proteins. The endoplasmic reticulum consists of a lattice of membranes that folds upon itself. The folding within the endoplasmic reticulum assists the production of…

Words 539 - Pages 3

Cell and Plant Cells Essay

Plant Cell There are two classes of cells that exist in biology today, there are prokaryotic cells and there are eukaryotic cells. A prokaryotic cell is a cell that has no nucleus which consists of bacteria; a eukaryotic cell is a cell that has a nucleus. There are two types of eukaryotic cells in biology; plant and animal cells. Plant cells have organelles in each cell that helps then function and go through processes such as photosynthesis. Each cell in our body consists of organelles that help…

Words 409 - Pages 2

Science Stuff Essay

Eukaryotic cell Prokaryotic cell Organelle - A structure or part that is enclosed within its own membrane inside a cell and has a particular function. Organelles are found only in eukaryotic cells and are absent from the cells of prokaryotes such as bacteria. The nucleus, the mitochondrion, the chloroplast, the Golgi apparatus, the lysosome, and the endoplasmic reticulum are all examples of organelles. Some organelles, such as mitochondria and chloroplasts, have their own genome (genetic material)…

Words 435 - Pages 2

Chapter 1: What Is Biology? Essay

structure The complexity of life is built in levels. (see fig 1-1) Each level has ingredients or components which interact to make something greater than the sum of the parts. -Subatomic particles -Atoms -Molecules -Organelles (not present in prokaryotes) -Cells -Tissues (present only in multicellular eukaryotes) -Organs (present only in multicellular eukaryotes) -Organ systems (present only in multicellular eukaryotes) -Multicelled organisms -Populations -Community -Ecosystem…

Words 805 - Pages 4

Essay on Biology I Honors Chapter 17

I. Section 1: Biodiversity ­ investigates the variety of organisms considered at all levels from populations to ecosystems A. Taxonomy­ the science of describing, naming, and classifying organisms 1. Taxon­ any particular group within a taxonomic system 2. Aristotle classified organisms into only two taxa: plants and animals. He grouped animals according to whether they lived on land, water, or air and grouped plants based on differences in their stems. B. The Linnaean System 1. Car…

Words 1040 - Pages 5

Questions On Biology

Chapter 3 and 4 1. The cell theory is all organisms composed of one or more cells, the basic living unit of structure and function in organisms. 2. The plasma membrane is a phospholipid bilayer in which protein molecules are either partially or wholly embedded. The phospholipid bilayer has a fluid consistency, comparable to that of light oil. The proteins are scattered throughtout the membrane; therefore they form a mosaic pattern. 3. Integral proteins are embedded within the lipid bilayer. They…

Words 917 - Pages 4

Ap Bio Essay

Chapter 7 Vocabulary List & Study Guide Objectives: 1. Identify cell organelles and explain their functions. 2. Distinguish between prokaryotic and eukaryotic cells. 3. Describe the endomembrane systems within cells. Vocabulary: Magnification- the ratio of an objects image to its real size Resolving Power- an assessment of the clearness of an image (the least distance that two points can be divided but still be noticeable) Light Microscope-…

Words 2032 - Pages 9

The Cell Essay

A Tour of the Cell Overview: The Fundamental Units of Life ¥ All organisms are made of cells ¥ The cell is the simplest collection of matter that can live ¥ Cell structure is correlated to cellular function ¥ All cells are related by their descent from earlier cells ¥ LMs can magnify effectively to about 1,000 times the size of the actual specimen ¥ Various techniques enhance contrast and enable cell components to be stained or labeled ¥…

Words 2003 - Pages 9

UnivBio Lecture4 Essay

Chapter 6 A Tour of the Cell Cellular level of organization • Cell theory: • A unifying concept in biology • Originated from the work of biologists Schleiden and Schwann in 1838-9 • States that: – All organisms are composed of cells – All cells come only from preexisting cells – Smallest unit of life • German botanist Matthais Schleiden in 1838 • German zoologist Theodor Schwann in 1839 • German physician Rudolph Virchow in 1850’s Organisms and Cells 3 Cell Size • Most much smaller than one…

Words 2736 - Pages 11