|
|
|
|||||||||||||||||||
| Have you ever wondered about cells?? About what they look like? Or even the different parts? Well if you have, then this website is for you!! The Cell Theory: *All living things have cells (even plants) *Cells are the basic unit of structure and funtion in all living things *All cells are produced form other cells Cells have lots of different parts. Under this peice of writing; there are some of the parts and description of a plant and animal cell: Cell Wall - Like their prokaryotic ancestors, plant cells have a rigid wall surrounding the plasma membrane. It is a far more complex structure, however, and serves a variety of functions, from protecting the cell to regulating the life cycle of the plant organism. Chloroplast - The most important characteristic of plants is their ability to photosynthesize, i.e. make their own food by converting light energy into chemical energy. This process is carried out in specialized organelles called chloroplasts. Endoplasmic Reticulum - The endoplasmic reticulum is a network of sacs that manufactures, processes, and transports chemical compounds for use inside and outside of the cell. It is attached to the double-layered nuclear envelope, providing a connection between the nucleus and the cytoplasm. In plants, it also connects between cells via the plasmodesmata. Golgi Apparatus - The Golgi apparatus is the distribution and shipping department for the cell's chemical products. It modifies proteins and fats built in the endoplasmic reticulum and prepares them for export as outside of the cell. Nucleus - The nucleus is a highly specialized organelle that serves as the information and administrative center of the cell. Peroxisomes - Microbodies are a diverse group of organelles that are found in the cytoplasm, roughly spherical and bound by a single membrane. There are several types of microbodies but peroxisomes are the most common. Plasmodesmata - Plasmodesmata are small tubes that connect plant cells to each other, providing living bridges between cells. Plasma Membrane - All living cells have a plasma membrane that encloses their contents. In prokaryotes and plants, the membrane is the inner layer of protection surrounded by a rigid cell wall. These membranes also regulate the passage of molecules in and out of the cells. Ribosomes - All living cells contain ribosomes, tiny organelles composed of approximately 60 percent RNA and 40 percent protein. In eukaryotes, ribosomes are made of four strands of RNA. In prokaryotes, they consist of three strands of RNA. Vacuole - stores compounds, helps in plant growth, and plays an important structural role for the plant. |
 Sign Guestbook |
 View Guestbook |
 rebellove_23@hotmail.com |
|
. |
| Visitors: 00197 |