CHARACTERISTICS OF LIFE

1. CHARACTERISTICS OF LIFE What makes something “living”??

2. What is Biology? • The study of living things (organisms) • The study of the interactions of living things • bio = life • Ology = study of

3. What are the characteristics of life? There are 8 characteristics that all living things have in common.

4. Unicellular 1. Living things are made up of cells Multicellular • A cell is a collection of living material enclosed within a barrier • Cells are the basic unit of life • Unicellular: made up of one cell • Multicellular: made up of many cells

5. Asexual • 2. Living Things Reproduce • produce offspring which resemble parents • asexual reproduction: has only one parent • sexual reproduction: requires two parents Sexual

6. 3. Living Things are based on a genetic code. • Inheritance of traits is carried on through DNA

7. 4. Living things Grow and Develop • GROWTH: increase in size & shape • DEVELOPMENT: mature over time • Living things have a lifespan Growth Development

8. 5. Living Things Use & Need Energy • energy comes from food, used to maintain body • AUTOTROPH: produce own food • HETEROTROPH: must consume food • DECOMPOSER:breaks down dead material for food

9. 6. Living things respond to their surroundings • They react to a stimulus which causes a reaction • The reaction is called a response

10. 7. Living things maintain a stable internal environment • HOMEOSTASIS: internal balance • Examples: sweating, panting, shivering, etc.

11. 8. Living things Evolve • Adapt to long-range changes in environment to better survive in their environment • These changes take place over a long period of time & involve the entire species

12. 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.

13. 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.

14. 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.

15. 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.