Поиск

Полнотекстовый поиск:
Где искать:
везде
только в названии
только в тексте
Выводить:
описание
слова в тексте
только заголовок

Рекомендуем ознакомиться

Остальные работы->Реферат
Despite the end of the Cold War and the faltering beginnings of the peace process in the Middle East, terrorism still remains a serious threat to many...полностью>>
Остальные работы->Реферат
If a tree falls in the woods and no one is there to hear it, did it make a sound? This saying brings me to my thesis of “Guilt Without Confession lead...полностью>>
Остальные работы->Реферат
William Faulkner’s “Barn Burning” presents a dichotomy of thought. On one hand, it is a heroic tragedy about Sarty Snopes growing into awareness and m...полностью>>
Остальные работы->Реферат
When I was a child,my mother had the most beautiful peony bushes in the county. The huge, superb, pompoms of white, pink, and burgundy, spectacularly ...полностью>>

Главная > Реферат >Остальные работы

Сохрани ссылку в одной из сетей:

Cell Structure Definitions Essay, Research Paper

Definitions:

Cell Wall

A structure made of cellulose that is, in the plant, responsible for many tasks. Firstly, it maintains the shape of the cell, and secondly it protects the cell from external forces. It also serves as a connector between the cell in question and its neighboring cells.

Cell Membrane

A thin and flexible membrane used to hold the cell together (the example given in the text was: ?Like a sausage skin?). Since it is semi-permeable, it prevents unwanted materials from entering the cell and possibly dealing damage to it.

Mitochondrion

The mitochondria could be described as the cell?s ?internal power plants?. Chiefly, they are responsible for turning various particles into adenosine triphosphate, a sort of biological ?energy unit? used by cells.

Chloroplast

Consisting of two chlorophyll-filled membranes (the Thylakoid membrane and the word-that-I-can?t-seem-to-find-in-any-book membrane), chloroplasts are responsible for photosynthesis. Although I will not go into this process in detail, it basically involves the transformation of CO2, H3O and Sunlight into C6H22O6 and O2(better known as glucose).

Cytoplasm

Mainly consisting of water, the cytoplasm is the liquid that all the organelles in the cell float in. On my model, the cytoplasm is depicted by the blue ?liquid? on the bottom of the dish.

Cytoskeleton

The cell?s cytoskeleton is an ?intricate network of fibre-like structures. Acting as sorts of ?pipes?, they stabilize cell shape and provide pathways within which materials can be transported. Father, I have sinned ? looking at my model I realize that there is no cytoskeleton, but I can?t do anything about it now?

Endoplasmic Reticulum

Attached to the nuclear membrane, the endoplasmic reticulum is a complex system of folded and flattened membrane sacs. In their simplest form, these membrane sacs are responsible for the synthesis and transportation of various cellular materials.

Golgi Apparatus

The golgi apparatus, which consists of several folded stacks of membrane, is used as storage, transportation, and modification of cellular materials which were newly synthesized by the endoplasmic reticulum.

Vacuole:

In animal cells, vacuoles sere as simple storage facilities for various foods, fluids, enzymes and the like. Although plant cell vacuoles serve the same purpose, they also provide ?turgor pressure? ? which basically means that the vacuole, when full of material, gives the plant a more strong and rigid form.

Lysosome

Known to some as the ?suicide sac?, a cell?s lysosomes are simply small, membrane-bound packages. Within these packages are several enzymes responsible for the breaking down and destruction of cellular structures.

Ribosome

Ribosomes are made in a cell?s nucleus, and later transported and attached to the endoplasmic reticulum. Their primary function is the synthesis of various proteins that the cell encounters.

Nucleus

Consisting of two parts, the Nucleolus and the Nuclear Membrane/Envelope, the nucleus contains all the genetic material necessary for making the plant in question be the plant in question. The actual nucleolus, which is located in the centre of the nucleus, is responsible for the creation of ribosomes, and the nuclear membrane acts as simple protection for the components within. Nuclear pores, located on the outside of the nuclear membrane, allow ribosomes to exit and connect to the surrounding endoplasmic reticulum.


Загрузить файл

Похожие страницы:

  1. Psychology Terms Definition Essay Research Paper

    Реферат >> Остальные работы
    Psychology Terms Definition Essay, Research Paper 1. Explain the concept of Ambiguity (p. ... their ideas to others, demand, call names. Passiveness ? go along with ... members as equal. 5. Describe the structuration process whereby member communication creates ...
  2. Gender Definition Essay Research Paper When studying

    Реферат >> Остальные работы
    Gender Definition Essay, Research Paper When studying "gender," the ... broad to have one clear definition. It can be studied ... that we separate the family structures that compose it: sexuality, ... an idea, because it would call for a complete reorganization of ...
  3. Genetic Engineering Cloning Essay Research Paper

    Реферат >> Остальные работы
    Genetic Engineering: Cloning Essay, Research Paper Genetic Engineering: Cloning ... cell. Such a clone is made up of groups of identical structures ... on the circumstances, but definitely not after the eighteenth ... years. It is a definite observation that there will ...
  4. Sweetness And Power Essay Research Paper

    Реферат >> Остальные работы
    Sweetness And Power Essay, Research Paper Sweetness and Power is a ... giving the reader the basic definition of sucrose, "an organic ... crushing blow came when Coca-Cola partly replaced sucrose with ... the flaws contained within the structure of the book and ...
  5. Sophocles Oedipus Rex Essay Research Paper

    Реферат >> Остальные работы
    Sophocles Oedipus Rex Essay, Research Paper Tragedy was performed in Athens ... . Classical tragedies were composed within a definite structural framework, although there were occasional ... chorus insist they are without a clue but they suggest Teiresias be ...

Хочу больше похожих работ...

Generated in 0.0026669502258301