1. Characteristics of Life

2. Vocabulary : Make Flash Cards
Respiration
Aerobic
Anaerobic
Cells
Metabolism
Synthesis
Homeostasis
Organic
Inorganic
Autotroph
Heterotroph
Opening Activity = Set up your flashcard fronts for these 11 vocabulary words.
Do the definitions on the back, for homework

3. Definitions Respiration: Getting energy from food.
Aerobic: Using oxygen.
Anaerobic: Lacking oxygen.
Cells: Living matter enclosed by a barrier. The basic unit of life.

4. More Definitions
Metabolism: Chemical reactions that break down or build up materials to support life.
Synthesis: Making complex molecules from less complex molecules.
Homeostasis: Keeping internal and external conditions balanced. (Thermostat on a furnace – Shivering produces heat)

5. Organic or Inorganic?
Organic means that something has the element carbon in it. Living things have carbon and so they are considered organic.
Inorganic: Nonliving things, generally lack carbon and are considered inorganic. The one exception is carbon dioxide it is inorganic and contains carbon

6. Autotroph and Heterotroph
Autotrophs produce their own food.
Heterotrophs ingest their food.
These methods both provide an organism with the necessary nutrients to live.
Assimilation: is how these nutrients become part of the organism.

7. 8 Characteristics of Life
1. Made of One or More Cells
2. Reproduce
3. Based on Genetic Code (DNA)
4. Grow and Develop
5. Obtain and Use Nutrients and Energy
6. Respond to Environment
7. Maintain Stable Internal Environment
8. Evolve or Change Over Time

8. 1. Made of One or More Cells
A cell is a living unit enclosed by a barrier called a membrane
Unicellular = 1 cell
Multicellular= More than one cell
Some cells are specialized and have specific jobs.
Cells can grow, reproduce and respond to environment

9. 1. Made of One or More Cells
Unicellular
a.) CELL: Collection of living material enclosed within a barrier
b.) cells are basic unit of life
c.) Unicellular: made up of one cell
d.) Multicellular: made up of many cells
Multicellular

10. 2. Reproduce
Sexual – cells from 2 different parents unite to form the first cell of the new organism
Asexual – One parent can divide or bud to form two organisms that are identical

11. Reproduction = produce offspring which resemble parents
Asexual
Reproduction = produce offspring which resemble parents
a.) asexual reproduction: has only one parent
b.) sexual reproduction: requires two parents
Sexual

12. 3. Based on Genetic Code
Inherited traits are carried by DNA – deoxyribonucleic acid
Asexual reproduction provides one set of traits
Sexual reproduction combines the traits of 2 parents

13. 4. Grow and Develop
Growth – Increase in size. Multicellular and unicellular organisms grow
Develop – Changes in shape and structure
Lifespan – How long an organism lives
Life Cycle – Staged of development

14. 4. Grow and Develop a.) GROWTH: increase in size & shape
b.) DEVELOPMENT: mature over time
c.) living things have a lifespan
Growth
Development

15. 5. Obtain and Use Nutrients and Energy
Chemical reactions called metabolism require energy
All organisms take in materials to provide the energy
Sunlight provides energy for producers or autotrophs
Food provides the energy for consumers or heterotrophs

16. 5. Living Things Use & Need Energy
a.) energy comes from food, used to maintain body b.) AUTOTROPH: produce own food c.) HETEROTROPH: must consume food d.) DECOMPOSER: breaks down dead material for food

17. 6. Respond to Environment
Responds to a stimulus or signal
External =light, temperature, gravity
Internal = Blood sugar, CO

18. 6. Respond to their Environment
a.) React to a stimulus
b.) An action causes a reaction
c. ) A reaction is called a response
d.) This involves one individual

19. 7. Maintain Stable Internal Environment
Homeostasis- keeping internal conditions balanced to survive
Examples: temperature and water
How? Feedback mechanisms, like a thermostat on a furnace

20. 7. Living things maintain a stable internal environment
a.) HOMEOSTASIS: internal balance
b.) examples: sweating, panting, shivering, etc.

21. 8. Evolve and Change Over Time
Individuals may experience many changes in their life span but their basic traits are the same.
As a group a species will change over time and the general traits will be different.

22. 8. Evolve and change over time
a.) adapt to long-range changes in environment
b.) change to better survive in environment
c.) these changes take place over a long period of time & involve the entire species

23. Quiz 2: The following are all examples of the characteristics of life
Quiz 2: The following are all examples of the characteristics of life. Identify each one.
Adapt D. genetic code G. Respond to stimulus
Made of cells E. Grow and develop H. Homeostasis
Reproduce F. Use/need energy
You eat a hamburger for lunch.
A baby gains 3 pounds in one week and begins to recognize voices.
A polar bear has white fur to blend in with the snow.
Your start to cry whenever you get a shot at the doctor’s office.
You begin to shiver because it is cold outside.
Red and white particles make up part of your blood.
A chick breaks out of an egg.

24. Levels of Organization
Individual
Population
Community
Ecosystem
Biome

25. Individual
The same species can breed and have fertile offspring

26. Population
Many of the same species living in a specific place

27. Community
The popuations of living organisms that are found in specific area

28. Ecosystems
The Biotic and Abiotic factors found in a given area

29. Biome
A group of ecosystems within a certain climate containing specific dominant species.

30. Biology is the study of_____

31. Biology is the study of_____
The living world.

32. Is photosynthesis required to be considered a living thing?

33. Is photosynthesis required to be considered a living thing?NO

34. Specialized cells allow cells to____________

35. Specialized cells allow cells to____________
Perform different functions

36. What is Homeostasis?

37. What is Homeostasis?
Homeostasis is the process of keeping internal conditions stable.

38. Name two things that are stimuli.

39. Name two things that are stimuli.
Light
Temperature

40. What is metabolism?

41. What is metabolism?
Chemical processes in your body like building up or breaking down nutrients

42. Describe two ways organisms might respond to environment.

43. Describe ways organisms might respond to environment.
Shivering in the cold
Birds fly south
Pupils constrict when exposed to light
Cells shrink when exposed to salt water
Trees drop their leaves in the autumn

44. To be in a community you must live_______

45. To be in a community you must live_______
You must live in the same area.
You cannot be located on the other side of the river or in a distant part of the forest.

46. How would you know if something were a living organism?

47. How would you know if something were a living organism?
Made of One or More Cells
Reproduce
Based on Genetic Code (DNA)
Grow and Develop
Obtain and Use Nutrients and Energy
Respond to Environment
Maintain Stable Internal Environment
Evolve or Change Over Time