Saturday, November 11, 2006

Describe the functions of the organelles found in eukaryotic cells

5 comments:

Anonymous said...

An organelle in Eukaryotes(animal cell) is the cytoplasm. The function of the cytoplasm holds all of the cellular organelles outside of the nucleus and also takes care of the shape and consitency of the cell. The cytoplasm is also a storage place for chemical substances necessary to life.
Another organelle in Eukaryotes is the vacuoles. The functions of the vacuole is to remove unwanted debris in the cell, removing materials that may harm the cell, and to allow the cell to change shape.
Another organelle in Eukaryotes is the nucleus. The function of the nucleus is to provide a compartment separated from the rest of the cell(holds the DNA).
An organelle in Eukaryotes in a plant cell is the golgi apparatus. The function of this organelle is to used for modifying, sorting, and packaging substances for cell secretion.
Another organelle in a plant cell in Eukaryotes is the cytoskeleton. The function of the cytoskeleton is to maintain the cell shape, and structure.

Teodora Prostran

Anonymous said...

The nucleolus, nucleus, chromosome, mitochondrion, cell membrane, cytoplasm, ribosome, endoplasmic reticulum, golgi apparatus, lysosome, centroile, cytoskeletal and vacuole are all organelle in an eukaryotic cell.
The nucleolus is said to make protein for the cell.
The nucleus controls everything the cell does and holds the chromosomes.
The chromosomes hold the genetic information of the cell.
The mitochondrion releases stored enegry
The cell membrane controls what goes in and out of the cell.
The cytoplasm allows transportation throughout the cell and stores waste until the waste is ready to be disposed of.
The ribosome uses information from the nucleus and material from the cytoplasm to create protein
The endoplasmic reticulum carries materials through the cytoplasm.
The golgi apparatus stores protein and packages the protein.
The lysosome keep the cytoplasm clean and break down large molecules.
The centroile helps with mitosis
The vacuole stores water, and other nutrients.
The cytoskeletal holds the cell's shape.

Tara Sadeghieh

Anonymous said...

Amer Almootassem said:The organelles of an eukaryotic cell are similar to the organelles in other normal cells. The eukaryotic cell has a nucleus and a nucleolus. This nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus contains most of the cell's genetic material. The main structural elements of the nucleus are the nuclear envelope which is a double membrane that encloses the entire organelle and keeps its contents separated from the cellular cytoplasm and the nuclear lamina, a meshwork within the nucleus that adds mechanical support much like the cytoskeleton supports the cell as a whole. Also the nucleus acts as the control center, directing all the cell activities. The nucleus is the main organ of the cell. The nucleolus might be involved in the production of proteins. The function of ribosome is to build proteins. These proteins are necessary for cell growth and reproduction. The vesicle has many functions. These vesicles store and transport the cellular products and wastes. The vesicles can also digest the wastes. The endoplasmic reticulum functions are protein translation and folding protiens. The enduplasmic reticulum can also transport protien through out the cell. The golgi apparatus stores protiens and can process primary protiens. The golgi apparatis package the protiens to in able them for release when ever needed inside and outside the cell. The mitochondrion provides the cell with its energy by converting the plant food into energy during a process called oxidative phosphorylation. The vacuole has many functions. The first function is removing unwanted structural debris. The second function is isolating materials that might be harmful to the cell. The third function is storing waste products. The forth function is exporting unwanted substances from the cell. The fifth and last function is enabling the cell to change shape. In the cytoplasm, the cell work is done. The nutrients are absorbed, transported and processed throughout the cell. The lysosome function is breaking the large compounds into smaller pieces. The lysosome digests excess or worn out organelles, food particles and viruses or bacteria. The centriole formes spindle fibers that separates chromosomes during cell division.

Grace said...

Living cells are divided into two types based on its complexity, eukaryotic cells and prokaryotic cells. Eukaryotic cells are divided into two cells, plants and animals. Plant cells tend to be rectangular prism and animal cells tend to be spherical or irregualar. Cells have a limited size and must divide or burst.
The eurkaryotic cells are highly structured, specialized transportation and packaging is necessary, larger size, protoza, higher plants and animals. Prokaryotic cells are single-celled organisms, bacteria, less complex, and divides by mitosis.
In the animal cell, the organelles found cells are: nucleus, nucleolus, ribsome, lysosome, endoplasmic reticulum, golgi apparatus, vacuole, cytoplasm, centrioles, cell membrane, mitochondrion, and chromosomes.
In the plant cell, the organelles found are: nucleolus, nucleus, ribsome, endoplasmic reticulum, vacuole, cytoplasm, cell membrane, cell wall, chlroplast, mitochondrion, and chromosomes.

Cell wall (plant)- supports and protects the cell, controls turgity
Cell membrane (both cells)- supports and protects, controls the movements of materials in and out of the cell, barrier between the cell and its environments, and maintains homeostasis.
Nucleus (both cells)-is like the control center of the cell and mainly controls the cell’s activities (surround nucleolus).
Cytoplasm (both cells)- supports and protects cell organelles.
Endoplasmic reticulum (both cells)-carries materials through the cell, stores, separates, and serves as cell’s transport system.
Ribsome (both cells) -produces proteins and injects them into the cytoplasm.
Mitochondrion (both cells)-breaks down sugar molecules into energy, energy-producing chemical reactions take place, controls level of water and other materials in cell, recycles and decomposes proteins, fats, and carbohydrates, forms urea.
Vacuole (both cells)-stores food, water, waste material (plants need to store large amounts of food).
Lysosme (animal)- breaks down larger food molecules into smaller molecules and digests old cell parts, digestive organelle, transports undigested material to cell membrane for removal.
Chlroplast (plant)-uses energy from the sun to make food for the plant (carries out photosynthesis).
Golgi apparatus (animal)-Packages protein in the cell.
Chromosomes (both cells)-contains genetic information, composed of DNA.
Nucleolus (both cells)-contains RNA for protein maufacture.
Centrioles (animal)-involved in cellular division, composed of nine tubes, each with 3 tubules.

Anonymous said...

In eukaryotic cells there is a nuclear membrane, and within this there are organelles and the cytoplasm.
An organelle in eukaryotic cells is the nucleus. The nucleus contains all of the cell’s genetic information and it directs all of the cell’s activities. The genetic information is held in the chromosomes, which are inside the nucleus.
Branching off from the outside of the nucleus is the endoplasmic reticulum. It crisscrosses through the cytoplasm, and there are two types; smooth and rough. Smooth is often found further way to the nucleus, and this is where chemicals, such as protein, that the cell has made are transferred throughout the cell.
On the rough endoplasmic reticulum, there are small organelles called ribosomes. The ribosomes are involved with the production of proteins.
In plants, there are large storage organelles called vacuoles while the vacuoles in animals are very small. Vacuoles store many sorts of molecules; for example, water molecules, and other nutrients.
Another organelle in eukaryotic cells is the Golgi apparatus. This is where proteins are stored in vesicles and are sent to the surface and all around the cell.
Mitochondrion provides the cell with energy, by combining sugar and oxygen with sugar, to release water, carbon dioxide, and energy.
Plants have chloroplasts which contain chlorophyll, to convert the sun’s energy to food by photosynthesis.
The cytoplasm is a watery fluid in the cell, that where nutrients are absorbed, transported, and processed.
Finally there is a cytoskeleton which is made of special proteins. This helps the cell keep its shape, helps protect the cell, and it helps with transport inside the cell.

Rupali Patel