Presentation about the levels of organisation: cells, tissues, organs,etc.

1. UNIT 1: THE ORGANISATION OF
THE HUMAN BODY
Learning objectives:
• Understand the levels of organisation of the human body.
• Recall the parts of a cell
•Recognise the main human tissues and their function
• Relate the different systems to their vital functions

2. 1. ORGANISATION OF LIVING MATTER
1.2 LEVELS OF ORGANISATION

3. IN GROUPS OF 4
1. Take a piece of paper and design your diagram including
the following sections:
• Subatomic level
• Atomic level
• Molecular level
• Cellular organelles
• Cellular level
• Tissues
• Organs
• Systems
• Human body
2. Cut and paste the drawings provided on your diagram
3. Explain one of the levels to the rest of the class.
GROUP ACTIVITY 15 MINUTES

5. DEFINITIONS (PAGE 7)
Cells are the basic structural and functional units that form our organism.
A tissue is a group of cells of the same type and origin, which perform the
same function.
An organ is formed by different tissues that perform a particular function.
A system is a group of organs that participate in one or more specific functions.
An organism is formed by the ensemble of systems
that function in a coordinated way.
células
tejido
órgano
sistema

6. 1.1 DEFINITION OF HUMAN BEING (PAGE 6)
 They are living things:
 They are composed of biomolecules.
 They are made up of cells.
They perform the three vital functions
(nutrition, interaction, reproduction).
 They are animals:
 Multicellular.
 They are eukaryote cells.
 They are heterotrophic.

7. 2. CELL STRUCTURE
Cells are the basic structural and functional units that form our organism.
YOUR TASK!!!
Build your own model animal cell.
Names on the notebook

8. IDEAS FOR YOUR MODEL ANIMAL CELL
Jello cell
Clay cell
http://www.wikihow.com/Make-a-Model-Cell
Pizza cell
crafts
Label
Organelles!!

9. 2.2 EXCHANGE WITH THE ENVIRONMENT
The cell membrane is
semipermeable
It only allows
the passage
of certain
substances.
Activity 7 page 8 in class

10. MECHANISMS FOR GOING THROUGH THE MEMBRANE
A. Diffusion  free passage of small molecules. BUT:
ALWAYS following the concentration gradient:
from higher concentration to lower concentration

12. B. Osmosis  passage of water from the more diluted to the more
concentrated medium
Water molecules
Any type of substance,
such as glucose or salt
Watch the animation:
http://www.stolaf.edu/people/giannini/flashanimat/transport/osmosis.swf

13. solution solutionsolution

14. hypertonichypotonic isotonic

15. C. Active transport  if the concentration of a substance is less
in the exterior, but the cell needs it, the cell can use energy in order to bring
it in.
ATP = energy

16. D. Endocytosis and exocytosis for incorporating or putting out
big subtances that cannot go through the cell membrane. Small vesicles are formed.
Activities 8, 9, 10 and 11 page 9

17. Exocyticvesicle
Endocytosis

18. 3. TISSUES AND ORGANS
In the human body there are different types of cells.
Cells specialise so that they can perform different tasks
and different types of cells are created.
DIFFERENTIATION: Process by which cells specialise.

19. Differentiation involves
changes in:
• Cell shape
• Function
• Activity of the cytoplasmic
organelles
Activities 12 and 13 page 10
Why do muscle cells have many mitochondria?
Why do glandular cells have a very developed Golgi apparatus?
Why do red blood cells do not have any organelles?
5 minutes to answer these questions in pairs:

20. 3.2 TYPES OF TISSUES
Epithelial tissue

21. Connective tissue
Bone tissueCartilaginous tissue
Adipose tissue

22. Muscle tissue Nervous tissue
Activity 17 page 11
Activities 20 and 21 page 12
Activity 23 13 page 13

23. 3.3 ORGANS

24. 4. SYSTEMS
ON YOUR NOTEBOOK: Classify the following systems depending on
the vital function (reproduction, nutrition or interaction)
they are involved with.

25. Nutrition
Excretory system
Digestive system
Circulatory system
Respiratory system
Reproduction
Male reproductive system
Female reproductive system
Interaction
Nervous system
Sense organs
Skeletal and muscular system
Endocrine system
ALL THESE SYSTEMS INTERACT AND WORK TOGETHER
IN A COORDINATED WAY

26. Glossary:
• Tissue
• Epithelial tissue
• Bone tissue
• Rough endoplasmic
reticulum

27. Pages 18 and 19:
38
40
41
42
45
50
52
READ AND UNDERSTAND SCIENCE
ON YOURNOTEBOOK
INPAIRS