Essays Tagged: "organelles"

Language of the cell

e everyday functions such as molecule movement, protein synthesis and tissue repair take place. All organelles within the cell are well rehearsed in their operations, but an error on an organelles beh ... ell rehearsed in their operations, but an error on an organelles behalf, can send the cell and it's organelles into panic. The efficiency rate of the cell plummets down to a low level. It does take so ...

(6 pages) 214 1 4.3 May/1996

Subjects: Science Essays > Biology

Inter-organismal Transport in Paramecium. This essay includes a bibliography.

otic cells. They contain membrane bound nuclei, "DNA that is associated with histone proteins " and organelles (, "Paramecium"). All paramecium are composed of only one cell (Encyclope ... only one cell (, "Paramecium"). However that single cell contains several important organelles that contribute to a network of vital processes. Paramecium live in freshwater, typically ...

(6 pages) 43 0 4.7 Feb/2003

Subjects: Science Essays > Biology

Biology notes on genetics.

acterium is a single, prokaryotic cell. It has a cell wall but lacks a nucleus and membrane - bound organelles. A bacterium's single DNA molecule is not coiled around proteins to form chromosomes. Ins ... ic cells must take into account the nucleus with the chromosomes inside and the many other internal organelles, all of which must be strategically maneuvered before the cell can properly divide.A cell ...

(5 pages) 129 2 2.4 Aug/2003

Subjects: Science Essays > Biology

Eukaryotic Cells, all organelles explained with functions.

Eukaryotic Cell vs. Prokaryotic EssayA eukaryotic plant cell consists of many organelles, a cell wall, and a nucleus. Unlike an animal cell, plant cells have cell walls that allo ... toplasm. RNA is also created in the nucleus.A prokaryotic cell has no nucleus and no membrane bound organelles. The DNA of a prokaryotic cell is concentrated in a specific area called the nucleoid, bu ...

(4 pages) 106 0 4.0 Nov/2003

Subjects: Science Essays > Biology

"Describe the theory of endosymbiosis and the arguments for and against this theory"

cells originated as communities of interacting entities a could join together in a specific order. Organelles like mitochondria and chloroplasts were themselves prokaryotic cells before the developme ... es subsequent generations they could also contain the ingested cell. Margulis also predicted if the organelles were really prokaryotic symbionts, they should have their own DNA and also should resembl ...

(4 pages) 64 0 3.0 Dec/2003

Subjects: Science Essays > Biology

Module 1 biology notes

nded by a cell wall and a plasma membrane. Some are surrounded by a capsule. Ribosomes are the only organelles found in their cytoplasm.ľEukaryotic cells have a nucleus that is separated f ... ded by a plasma membrane. Some are surrounded by a cell wall. Their cytoplasm contains a variety of organelles.ľEach organelle has a particular function.MITOCHONDRIA make ATPCHLOROPLASTS m ...

(4 pages) 46 0 3.7 Feb/2004

Subjects: Science Essays > Biology

College lab report on enzymes

Lab Ex#8: "Enzymes: Catalysts of Life"INTRODUCTIONEnzymes are protein organelles where chemical reactions take place to generate energy within our cells. Without the ener ...

(5 pages) 368 0 3.2 Feb/2004

Subjects: Science Essays > Physics

Describe the structure and function of blood and the body fluids - an essay about different components that make up blood.

ratio is very large on the erythrocytes sooxygen can diffuse very quickly into the cell. They lack organelles meaning that there is more room for haemoglobin. They are small and have a flexible membr ...

(2 pages) 47 0 3.0 Mar/2004

Subjects: Science Essays > Biology > Human Biology

What is Mitochondria?

f bacteria but may have different shapes depending on the cell type.Mitochondria are membrane-bound organelles, and like the nucleus have a double membrane. The outer membrane is fairly smooth. But th ...

(2 pages) 64 1 4.0 Mar/2004

Subjects: Science Essays

Biosensor What is a Biosensor?

s:Analytical devices incoporating a biological material or a biomimic (e.g. tissue, microorganisms, organelles, cell receptors, enzymes, antibodies, nucleic acids etc.), intimately associated with or ...

(3 pages) 28 0 5.0 May/2004

Subjects: Science Essays > Biology

Biosensors combine

s:Analytical devices incoporating a biological material or a biomimic (e.g. tissue, microorganisms, organelles, cell receptors, enzymes, antibodies, nucleic acids etc.), intimately associated with or ...

(3 pages) 24 0 5.0 Nov/2004

Subjects: Science Essays > Biology

Skeletal and muscular system

stors of animals had their weight supported by water and were able to move by cilia or other simple organelles. The evolution of large and more complex organisms (animals) necessitated the development ...

(9 pages) 118 0 4.7 Mar/2005

Subjects: Science Essays > Biology > Human Biology

Develop some hypotheses explaining why only eukaryotic cells have evolved into multi-cellular organisms.

cturally simple. They are found only in single-celled and colonial organisms. Eukaryotic cells have organelles with their own membranes. Single-celled eukaryotic organisms are very diverse, but many c ... ht from the beginning. They needed to be larger to hold new parts: a nucleus, gene DNA package, and organelles. Life evolved in the sea. It stayed there for the majority of the history of earth. The f ...

(4 pages) 46 0 5.0 Apr/2005

Subjects: Science Essays > Biology

Cell Biology notes

There are many single cells and many multi cellular organisms like us. Single cells have organelles that help them function Organelles:· Mitochondrion: cell organelle ... ensity which can in turn be interpreted by our nervous system and brain.Many of these cells contain organelles, though after some cells are specialised, they do not possess particular characteristics ...

(4 pages) 52 0 3.0 Apr/2005

Subjects: Science Essays > Biology

Discuss the similarities and differences between prokaryote and eukaryote cells.

an energy release needed to support life and build structures. The cell consists of membrane bound organelles, which are responsible for the division of labour. There are two main classes of cells- P ... ryotes have great differences. Most notably the lack of a nucleus in prokaryotes and membrane bound organelles. The DNA of prokaryotes floats freely around the cell; the DNA of eukaryotes is held with ...

(3 pages) 57 0 3.7 Oct/2005

Subjects: Science Essays > Biology

Cell walls revised.

lasmodesmata.Like other eukaryotes, plants have a nucleus, plasma membrane, mitochondria, and other organelles, but plant cells differ from animal, fungal, and protist cells in a number of important w ... most plant cells are filled with a single large vacuole, such that the nucleus, plastids, and other organelles are all close to the cell membrane. This can be seen in the picture at right. At the far ...

(2 pages) 16 0 0.0 Dec/2005

Subjects: Science Essays > Biology

Experimental design testing antibacterial soap.

Introduction:Bacteria are single celled prokaryotic organisms, that lack organelles and circular DNA. They are much smaller and less complex than eukaryotic cells. They are ...

(5 pages) 86 0 4.6 Dec/2005

Subjects: Science Essays > Microbiology

Neuronal Functions

of these actions is performed.Neurons are just like any other cell in the body in that they contain organelles (i.e. nucleus, mitochondria, endoplasmic reticulum, etc.). What make them special are the ... rts they have that facilitate their duty of communication. As mentioned, all cells are comprised of organelles (minuscule structures that help the cell to work properly). The nucleus (which also conta ...

(7 pages) 54 0 5.0 Dec/2006

Subjects: Social Science Essays > Psychology

Biology Definitions

a.Chloroplasts A group of structures that has the general name plastid. Plastids Are membrane-bound organelles found only in plant cells. Usually plastids are Spherical bodies that float freely in the ... tly in the dividing cell.Cytoplasm The ground substance of the cell that supports all of the cell's organelles. See Cell.Gene Around 1911, Thomas Hunt Morgan introduced the tiny fruit fly Drosophila m ...

(5 pages) 27 0 3.0 Oct/2001

Subjects: Science Essays > Biology

Bacteria In General: Brucellosis

a completely lack or have very few internal membranes, which mean that they do not have some of the organelles like mitochondria or chloroplasts. Most bacteria are benign or beneficial such as the yea ...

(9 pages) 46 0 4.6 Sep/2007

Subjects: Science Essays > Biology