1. 1.3 Characteristics of Life

2. 1. Living things are made of cells
These units help to organize their materials.

3. Examples of Cells Nerve cell Egg and sperm Red blood cell Fat cell
Cheek cell

4. 2. Living things reproduce
Why is this so important?
How do plants reproduce?
How do animals reproduce?
Egg and sperm
pollen
Euglena separate

5. Types of Reproduction Sexual Reproduction
Two parents unite to form a new organism
Asexual Reproduction
A single parent divides itself two produce offspring

6. 3. Living things are based on a universal genetic code (DNA).
All living things have the same bases (A, T, C, G) in their DNA-they are just in different order

7. 4. Living things grow and develop
Each organism has a pattern of growth and development characteristic of its species.

8. 5. Living things obtain and use materials and energy
Organisms take in energy and transform it to perform all of life’s activities.
-metabolism
-photosynthesis

9. Metabolism
= Combination of chemical reactions through which an organism builds up or breaks down materials.

10. 6. Living Things Respond to Their Environment
Eye spot (responds to light)
All organisms respond to environmental stimuli.
Nikon MicroscopyU Movie Gallery: Paramecium (Protozoan) Video No. 3

11. Stimulus-Response
A stimulus is a signal to which an organism responds.

12. 7. Living Things Maintain a Stable Internal Environment
The environment outside an organism may change, but regulatory mechanisms maintain an organisms’ internal environments within limits that sustain life.
HowStuffWorks "Homeostasis"

13. Homeostasis

14. homeostasis  
The ability to maintain a relatively constant internal environment.
EXAMPLES: body temp.
Blood sugar levels
Water levels pH

15. Kidney used for water regulation
Gets rid of wastes

16. 8. Taken as a group, living things change over time.
Evolution

17. BIG IDEAS IN BIOLOGY Science as a Way of Knowing: Observe Question
Experiment
Research
CHAPTER 1

18. Interdependence in Nature
BIG IDEAS IN BIOLOGY
Interdependence in Nature
All forms of life are connected in the biosphere with the cycling of energy and matter
CHAPTERS 3-6

19. BIG IDEAS IN BIOLOGY
Matter and Energy
Matter needed for nutrients
Energy needed to fuel life’s processes
CHAPTER 2

20. Organisms are made of one cell or many cells CHAPTER 7
BIG IDEAS IN BIOLOGY
Cellular Basis of Life
Smallest units of life
Organisms are made of one cell or many cells
CHAPTER 7

21. BIG IDEAS IN BIOLOGY Information and Heredity
All life has a genetic code in DNA
CHAPTERS 11-14

22. BIG IDEAS IN BIOLOGY Unity and Diversity of Life
All life is made of carbon
All life uses protein to build its structures
All store genetic information
CHAPTER 2

23. BIG IDEAS IN BIOLOGY Evolution Living things change through time
Relationships of living things through 3.5 billion years
CHAPTERS
15-17

24. BIG IDEAS IN BIOLOGY Structure and Function
Structure design enabled function
CHAPTER 7

25. Br-r-r-r-r
BIG IDEAS IN BIOLOGY
Homeostasis
Organisms must expend energy to maintain internal environment in the face of a changing external environment
CHAPTER 35

26. BIG IDEAS IN SCIENCE
Science, Technology, and Society (STS) (‘should we’ questions)
Mad Cow Disease
Chronic Fatigue Syndrome
Genetic Engineering
Cloning
p. 23, p. 253, p. 456, and more

27. BRANCHES OF BIOLOGY

28. PUT IN ORDER LARGEST TO SMALLEST
Biosphere
Ecosystem
Community
Population
Organism
Organ Systems
Organs
Tissues
Cells
Molecules