1. The 8 Features of Living Things October 5 & 6

2. 1. Living things are made of cells. cell is basic unit of life. unicellular and mulitcellular organisms ex. humans, bacteria cell is basic unit of life. unicellular and mulitcellular organisms ex. humans, bacteria

3. 2. Living things reproduce sexual or asexual reproduction ex. mammals, amoeba sexual or asexual reproduction ex. mammals, amoeba

4. 3. Living things grow increase in SIZE ex. Humans, dogs, elephants increase in SIZE ex. Humans, dogs, elephants

5. 4. Living things develop change in FORM ex. Caterpillar into butterfly infant into adult change in FORM ex. Caterpillar into butterfly infant into adult

7. 5. Living things need food. consumer producers ex. plants, animals consumer producers ex. plants, animals

8. 6. Living things use energy obtain energy(ability to do work) from food ex. process of cellular respiration obtain energy(ability to do work) from food ex. process of cellular respiration

9. 7. Living things respond Respond to changes in the environment An individual responds to a stimulus ex. cold environment causes shivering –Hot causes sweating –Pupils dilate in the shade & constrict in the sun. Respond to changes in the environment An individual responds to a stimulus ex. cold environment causes shivering –Hot causes sweating –Pupils dilate in the shade & constrict in the sun.

10. 8. Living things are adapted to their environment adaptation enables living things to survive in their environment Long-term change over a species ex. white polar bears blending in with the snow –Dandelions spread their seeds in the wind –Animals with bright coloring; frogs, snakes, adaptation enables living things to survive in their environment Long-term change over a species ex. white polar bears blending in with the snow –Dandelions spread their seeds in the wind –Animals with bright coloring; frogs, snakes,

11. Levels of Biological Organization 1.Organism An individual living system Examples: Animals, plants, fungus, micro-organisms (protists or bacteria) 1.Organism An individual living system Examples: Animals, plants, fungus, micro-organisms (protists or bacteria)

12. Example: Human

13. 2. Organ Systems Collection of organs that work together to perform a specific function –Examples of systems: nervous system & digestive system Collection of organs that work together to perform a specific function –Examples of systems: nervous system & digestive system

14. 3. Organ Collection of tissues that perform a specific function –Examples: skin, lungs, stomach Collection of tissues that perform a specific function –Examples: skin, lungs, stomach

15. 4. Tissue A collection of cells that perform a similar function.

16. 5. Cells Basic unit of life – Unicellular vs. multicellular (bacteria vs. humans) Basic unit of life – Unicellular vs. multicellular (bacteria vs. humans)

17. The Discovery of the Cell Robert Hooke – 1665 –1 st viewed cork cells using an early microscope –He saw tiny chambers and called them “cells”. Robert Hooke – 1665 –1 st viewed cork cells using an early microscope –He saw tiny chambers and called them “cells”.

18. 1. ALL living things are composed of cells. Mushroom E. coli The Cell Theory:

19. Amoeba Daisy Tiger

20. 2. Cells are the basic units of structure and function in living things. Organism Organ System Organ Tissue Cells

21. 3. New cells are formed from existing cells.