Cell Diversity
By Naomi Keddy
Tissue is a group of similar cells modified to carry out the same
function
Types of plant tissues:
·
Dermal
tissue: surrounds and protects the plant. Eg Epidermis
·
Vascular
Tissue: transports minerals in the plants. Eg Xylem; transports water and
dissolved minerals and Phloem transports food.
Four Types of animal tissues:
·
Connective
tissue: consists of cells dispersed in a matrix and surrounds its and
supports the body.
Types of connective tissue
-Dense
Connective tissue
-Adipose tissue
-Areolar tissue
-Compact bone
-Blood
Examples of connective tissue:
1.
Cartilage: Provides strength and flexibility
2.
Bone: Allows movement, Stores calcium and
contains forming blood cells
3.
Blood: Transports oxygen and carbon dioxide.
Tissue Culture: is the growth of
cells in sterile nutrient medium outside the body.
In vitro means outside of the
body
Micropropagation: is the growth of large numbers of cells of a
parent plant.
Monoclonal antibodies: combine with a specific type of antigen,
this may be used to attach to and show the presence of antigens on cancer
cells.
Growth of Skin: Patients skin grown outside of the body and new
skin is grafted onto the wound, this is called a skin graft and is often used
on badly burnt patients due the fact the their skin tissue too bad damaged to
repair itself.
Conditions necessary for Tissue growth
• Oxygen
• Nutrients
• Growth
factors and hormones
• Correct pH
• Optimum
temperature
• Sterile
conditions
• Freedom
from competition
An Organ: is made up of a number of tissues working together to
carry out the same function.
An Organ System: contains a number of working organs working
together to carry one or more functions.
