1. Characteristics
of living things

2. Take a close look at the next slide and
try to spot all the living things in the picture. 1

3. 2

4. some examples of living things in the picture below are trees , grass, birds, a farmer, a dog and a cow .
Although they look and behave differently they all have one thing in common .
Being alive !

5. There are 5 main characteristics of living things4

6. 1- Made of cells 5

7. All living things are made of cells. What is a cell
All living things are made of cells. What is a cell? A cell is the smallest unit of living things. A cell is the building block of living things. The cell is a membrane like structure that contains all the materials necessary for life . 6

8. Even You are made of small building blocks called cells7

9. Some organisms are composed of only ONE CELL
These organisms are called UNICELLULAR OEGANISMS .
They can only be seen with a microscope .
Examples of these organisms are : Amoeba and Bacteria 8

10. Multicellular organisms
Some organisms like Humans are made of trillions of cells.
Any organism that is composed of more than one cell is called Multicellular organism. ! 9

11. .
Each group of cells in a multicellular organism has its own shape , size , and function. Different groups of cells work together to keep the organism .alive
I’m a Prison Cell! 
Group of skin cells
Group of muscle cells ! 10

12. 2-Respond to stimuli 11

13. If the flash of a camera Goes off near your eyes
You will respond (react) to the bright light by blinking .
The flash of light stimulated your blinking 12

14. Click on the button to learn more about stimulus and response
What is a stimulus?
It’s any change that affects the living organism
A reaction towards this change is called Response .
Click on the button to learn more about stimulus and response 13

15. Click on the picture to learn more about homeostasis
Maintaining stable internal conditions to survive .
Example : Body Temperature and Heart beats
Click on the picture to learn more about homeostasis 14

16. 3- Reproduction 15

17. 3-Reproduction
The process of making new copies of an organism through passing copies of all or part of the parents’ DNA to their offspring (children). 16

18. DNA, or deoxyribonucleic acid, is the genetic material that controls the structure and function of cells. 17

19. Types of reproduction Sexual Reproduction 1-Two parents are involved .
(Male and female )
2-Offsprings receive part of
The DNA from each parent
3-Most animals and plants
Reproduce by sexual reproduction
Asexual Reproduction
1- Only One Parent
2-Offsprings receive the same exact copy of DNA from their parent.
3-Offsprings look exactly like their parent
Ex: Amoeba by Binary Fission
Hydra by Budding 18

20. Hydra 19

21. Most Unicellular organisms and some plants reproduce Asexually
Hydra : it’s a simple multicellular animal that lives in sea water .
Hydra Reproduces by “Budding:
1- A small bud appears on the side
2-The bud grows looking exactly like its parent
3-The bud breaks off
4-The new offspring separate and get carried By the water where it settles some
Place else 20

22. Binary Fission
Amoeba and Bacteria reproduce asexually by a process called Binary Fission In Binary fission the cell grows and then splits into two identical cells 21

23. 4- Need energy 22

24. Living things need energy to
1-carry out the activities of life.
2- make or break down food.
3- move materials into and out of cells
4- build and repair cells.
5- move and to interact with each other.

25. BUT HOW DO ORGANISMS GET THEIR FOOD ?
All living things need to get energy
Food
BUT HOW DO ORGANISMS GET THEIR FOOD ? 23

26. 1-Producers 2-Consumers 3-Decomposers
Living things are divided into three groups according to how they obtain nutrients
1-Producers 2-Consumers 3-Decomposers 24

27. 1-Producers
Producers : they (produce) make their own food using the sun’s energy.
A producer could be a plant or green algae. 25

28. 2-Consumers Consumers : They (Consume) Take in food.
A consumer could be
Herbivore
Carnivore
Omnivore 26

29. They break down dead plants and animals into simple useful materials that the soil can use.
Examples: Bacteria ,Fungi and some Worms.
3-Decomposer 27

30. 28

31. 5-Grow and Develop 29

32. All living things grow during some period of their lives.
When a unicellular organism grows, it gets larger and then divides, forming two cells. 30

33. Can you guess who this is ?31

34. When a multicellular organism grows, the number of cells in its body increases, and the organism gets bigger. 32

35. Credits https://www.youtube.com/user/AmoebaSisters
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