1. Tell if the object is living or nonliving.
Let’s Practice
Tell if the object is living or nonliving.
Nonliving
Living
Nonliving
Living
Living
Living

2. Do Now 
A hermit crab is living. Explain how scientist determined that it is a living organism.
2) Is the hermit crab’s shell, living or non-living. Explain why.

3. 5 Characteristics of LIFE

4. What’s the secret recipe to life?
1) Made of cells
2) Obtain & Use ENERGY
3) Reproduction: MULTIPLY
4) RESPOND
Homeostasis: MAINTAIN conditions
Evolve & ADAPT
5) Develop: GROW
Come up with creative way to remember this? HW?

5. 1) MADE OF CELLS/CELLULAR ORGANIZATION
A CELL IS THE SMALLEST LIVING UNIT THAT CAN CARRY OUT LIFE PROCESSES.

6. Single celled (unicellular) organisms makeup most organisms on Earth.
Pro
Paramecium Chlamydomonas Euglena
They have everything they need to be self-sufficient.

7. In multi-cellular organisms, the cells specialize to perform specific functions (bone cells, skin cells, muscle cells, root cells,
leaf cells).
Leaf cell
Smooth muscle
Nerve cell
Red Blood Cell

8. CELLULAR ORGANIZATION Molecules Cells Tissue Organs Organism
A PERIOD START SLIDE
Organism
Organ System

9. 2) USE ENERGY/METABOLISM
The SUN is the main source of energy on Earth!!
END D??
The SUN makes light that is used by plants!
What is the name of this process by which plants convert the energy from the sun into food?

10. 2) USE ENERGY/METABOLISM
Photosynthesis:
trap the energy of the Sun to make organic molecules/nutrients used for food by the organism
convert sun, water, and carbon dioxide into glucose for food and give off oxygen gas

11. 2) USE ENERGY/METABOLISM
Autotrophs/Producers- convert sunlight energy into chemical energy through the process of photosynthesis Heterotrophs/Consumers- ingest or eat other organisms in order to obtain chemical energy

12. 2) USE ENERGY/METABOLISM
Autotrophs (producers)
Make their own food/nutrients from the sunlight (photosynthesis)
Convert the food/nutrients into ATP (energy) through cellular respiration

13. 2) USE ENERGY/METABOLISM
Heterotrophs (Consumers) - can NOT produce their own food/nutrients - get their energy from plants or other organisms - must ingest their food/organism -converts nutrients/food into ATP through cellular respiration

14. 2) USE ENERGY/METABOLISM
F Block Stop

15. 2) USE ENERGY/METABOLISM
Cellular Respiration
produces energy for the organism in the form of ATP molecules
Two types:
1) Aerobic - uses OXYGEN
2) Anaerobic - no oxygen required
(primarily by simple organisms)
Anaerobic bacteria in gastrointestinal tract

16. 2) USE ENERGY/METABOLISM
All living things must have a constant supply of energy and matter
Transformation of energy/matter within the body
Digestion (chemically break down food)
Ingestion (take in food)

17. 3) RESPOND TO A STIMULUS
Living things respond to immediate and long-term changes in their environment (shiver when cold, change fur color, plants bend toward light).

18. 3) RESPOND TO A STIMULUS
Stimulus - change in environment that causes a response
Response - reaction to a stimulus

19. 3) RESPOND TO A STIMULUS
a. dogs pant when hot b. pupils dilate in lower light levels c. humans sweat when body gets too hot d. reflexes – touch hot stove, fight/flight
Last slide A

20. Homeostasis 3) RESPOND TO A STIMULUS
Maintaining stable internal conditions
Organisms utilize a lot of energy to maintain homeostasis
Examples: body temp.
Blood-glucose
pH level: acid/base

21. Evolution/Adapt 3) RESPOND TO A STIMULUS
long term response to environmental stimuli
Species adapt and change in response to challenging environmental conditions

22. Development means to change into an adult form
4) GROW AND DEVELOP
To grow means to get bigger and to get bigger; more cells must be added.
Unicellular - increase in size
Multicellular - increase in number of cells.
Development means to change into an adult form
(mature)
D Block Start

23. Reproduction can be either asexual or sexual.
5) REPRODUCE
Reproduction must occur for a species to survive.
Reproduction can be either asexual or sexual.

24. 5) REPRODUCE ASEXUAL REPRODUCTION one parent No genetic variation
Energetically inexpensive form of reproduction
Budding/binary fission

25. Sexual Reproduction 5) REPRODUCE
Genetic variation as offspring gets traits from two parents
egg and sperm = Fertilization
Genetic variation
Energetically expensive form of reproduction
DNA - carries the genetic code
Gene – DNA segment which leads to trait

26. LETS PRACTICE!!! Which characteristics of life is being described?
Reproduction
Cells
Responds-adaptation
Grow and develop
Energy

27. Give an example of something living, dead and nonliving.
* Living organisms must show ALL characteristics of life.
*Dead organisms ONCE showed ALL characteristics but now do not.
*Nonliving things DO NOT have ALL characteristics.