Class: 3
Date: February. Tuesday 16/10
Item: Review the cell
Robert Hooke:
Jean baptiste von helmont: created the first microscope; and saw a drop of water and discover the protist.
Matias Schleiden
= developed the cell theory.
Theodor Schwann
Cell Theory
Its has three postulates.
1. The cell is unity of structure.
2. The cell is unity of function.
3. All the living things are formed by cells.
The Cell
Parts
Nucleus: Is a structure inside
The cell: its function is the control and direction of the cell. The nucleus is formed By:
nucleolus: Its function is to do ribosomes.
Nuclear Membrane: Its formed by phospholipids and proteins.
Its function is give shape to nucleus.
inside of the nuclear membran we can find NUCLEAR JUICE.
The nuclear juice: Its a liquid made by DNA and RNA
Ribosomes: They are in all places of the cell; they was created in the nucleus. The ribosomes produce proteins that are used in the construction of the membranes.
Chromosomes: They are responsible by the genetic information.
Celular Membrane
Is a structure most important; their functions are:
- Protect the nucleus and cytoplasm
- Give form to the cell
-To allow change of nutrients
martes, 16 de febrero de 2010