cell biology introduction

11.  Cell biology- cover topics
 1-shape
 2-function
 3-reproduction
 4-chemestry of cell
 Cytology cover topics
 1-shape and structure
 2-chromosome
 3-gene and genetic material

13.  Largest human cell –nerve cell
 Largest plant cell –fibres of ramei

15.  B. Characteristics of cells:
 1) Contain highly organized molecular and
biochemical systems and are used to store
information
 2) Use energy
 3) Capable of movement
 4) Sense environmental changes
 5) Can duplicate (transfer genetic information to
offspring)
 6) Capable of self-regulation

16. Reason 1:
 Limited in size by the RATIO between their Outer Surface Area and
Their Volume.
A small cell has more SURFACE AREA than a large cell for a GIVEN
VOLUME OF CYTOPLASM.
Reason 2:
 THE CELL'S NUCLEUS (THE BRAIN) CAN ONLY CONTROL A CERTAIN
AMOUNT OF LIVING, ACTIVE CYTOPLASM.

19. What Do Those Parts
Do?

24. 1- classification of cell
2-details of prokaryotic cell
and eukaryotic cell
3-structure and function of cell wall
4-cellular organells –cell boundrys
5-plasma membran-and their models and concept