1. LIFE FUNCTIONS

2. You will learn the 10 life functions and their definitions.
MR STRANGER
Meet Mr. Stranger!
You will learn the 10 life functions and their definitions.

3. Life Functions
Life functions are needed to keep a stable or constant environment with in a living thing.

4. Metabolism
All of the chemical activities happening in your body.

5. Obtaining raw materials for….
Nutrition
Obtaining raw materials for….

6. Nutrition
* Nutrition: Activities by which an organism obtains materials from its environment and prepares them for use.

7. energy
growth

8. To get energy
Food
Digestion
growth

9. Heterotrophic Autotrophic
2 Types
Heterotrophic Autotrophic
Photosynthesis
SUN  FOOD
Ingestion =eat
Digestion =break down
Egestion =GET RID OF Feces(POOP)

10. Heterotroph or Autotroph?

11. DIGESTION

12. Heterotroph or Autotroph?

13. Heterotroph or Autotroph?

14. Heterotroph or Autotroph?

15. Heterotroph or Autotroph?

16. Respiration
Turning food into energy

17. Respiration: releases the chemical energy stored in nutrients.

18. Growth
To get larger
(using raw materials to make a larger body).

19. Synthesis Simple substances are combined To form complex substance
Turning the raw materials from your food into needed materials.
Simple substances are combined
To form complex substance

20. This is Synthesis

21. End of Synthesis
Before digestion

22. Absorption
Incorporating the materials from your food into your body parts (in order to grow or heal).

23. Transport
Moving and distributing materials throughout the body.

24. TRANSPORT
Simple organisms: direct exchange with environment.

25. Transport (multicellular)
Complex organisms: all cells are not in contact with the environment. The circulatory system allows blood to carry nutrients , oxygen and wastes.

26. TRANSPORT
Plants: have specialized structures called xylem and phloem to transport substances from the roots to the stems and leaves.
Xylem for water
Phloem for food

27. Reproduction
Making more of your own species.

28. Reproduction: 2 Types:
Sexual Reproduction:
2 parents make a unique individual.
*1/2 genes from mom
*½ genes from dad
Asexual Reproduction:
1 parent copies itself.

29. Asexual reproduction requires one parent cell and offspring are identical to the original.

30. Urea Excretion Carbon Dioxide Expelling toxic wastes from the body.
CO2, URINE, SWEAT
Urea
Carbon Dioxide

31. Paramecium Excretion
Urea

32. Regulation Maintaining Homeostasis An Internal Balance . 37
Temperature
Body
Time

33. 9. Regulation Homeostasis Staying out of danger (reflexes)
Constant body temperature (Nervous system)
Constant water level (Excretory system)
Constant blood sugar level (Endocrine System)
Constant blood pressure (Nervous System)
Homeostasis
Blood Sugar
Time

34. Danger Zone
Homeostasis
TEMPERATURE
Danger Zone
Time

35. MR STRANGER
rowth
ransport
ynthesis
utrition
xcretion
etabolism
egulation
bsorption
eproduction
espiration

36. Which Life Function Is It?
Excretion
Nutrition
Transport
Regulation
Excretion
Reproduction
Nutrition
Synthesis
Assimilation

37. The body temperature of a runner increases
The body temperature of a runner increases. The runner responds by perspiring, which lowers body temperature. This process is an example of….
maintenance of homeostasis
transport
locomotion
reproduction

38. If a human system fails to function properly, what is the most likely result?
a stable rate of metabolism
a disturbance in homeostasis
a change in the method of respiration
a change in the DNA

39. Which life process is classified as autotrophic in some organisms and heterotrophic in other organisms?
hormonal regulation
nutrition
anaerobic respiration
transport

40. When an individual goes without eating for a day, his or her blood sugar level remains about the same throughout the day. This relatively constant condition is maintained by……
regulation
egestion
reproduction
growth of cells

41. Why is this organism considered a heterotroph rather than an autotroph?
It manufactures its own food.
It does asexual reproduction.
It performs photosynthesis.
It absorbs nutrients.

42. Describe the difference:
Sexual and Asexual
Autotrophic and Heterotrophic

43. Test Question