1. TOPIC: Life Processes/Functions AIM: What are the life processes?

2. WHAT CHARACTERISTICS OR PROPERTIES SEPARATE THESE ITMES?

3. WHAT CHARACTERISTICS OR PROPERTIES SEPARATE THESE ITMES?

4. WHAT IS LIFE?
There is NO ONE definition of LIFE, so scientists use several functions to describe life.

5. Life Functions GROWTH NUTRITION REGULATION TRANSPORT REPRODUCTION
METABOLISM
HOMEOSTASIS
NUTRITION
TRANSPORT
RESPIRATION
EXCRETION
SYNTHESIS

6. BETTER KNOWN AS ‘EATING’ INVOLVES ALL PROCESSES OF EATING LIKE:
NUTRITION
BETTER KNOWN AS ‘EATING’
INVOLVES ALL PROCESSES OF EATING LIKE:
1. INGESTION
2. DIGESTION
3. EGESTION/ELIMINATION

7. Ingest food = take it in (eat)

10. TRANSPORT
NOT MOVEMENT!!!
ABSORPTION, DISTRIBUTION and CIRCULATION of material throughout the cells

11. INCLUDES THE CHEMICAL ACTIVITIES THAT CREATE AND RELEASE ENERGY
RESPIRATION
NOT JUST BREATHING !!!!
INCLUDES THE CHEMICAL ACTIVITIES THAT CREATE AND RELEASE ENERGY

12. Production of ENERGY
Need nutrients (glucose) to make energy needed perform various activities
Respiration

13. Plants and animals use the oxygen in the air to turn food into energy.

14. Elimination of cellular/metabolic waste
EXCRETION
Elimination of cellular/metabolic waste
CO2, Water, Salts

15. Sweat = water, salt, urea (nitrogen waste)

16. Process by which small molecules combine to form larger molecules
Synthesis
Process by which small molecules combine to form larger molecules

17. An increase in cell size and/or cell number
Growth
An increase in cell size and/or cell number

18. Increase in cell size

19. Bacteria cells dividing

20. Regulation
The control and coordination of various activities, including responses to stimuli

21. Plants grow towards the light.
People react to the temperature around them.

22. Production of new individuals.
Reproduction
Production of new individuals.
NOT NECESSARY FOR THE SURVIVAL OF THE INDIVIDUAL

23. Sum total of all life processes in the body
Every single thing carries out metabolic activities
Metabolism

24. Maintains HOMEOSTASIS
HOMEOSTASIS = maintaining a stable, internal environment