1. Grade 10 Science - Biology

2. What is Life? All Images Courtesy of National Geographic

3. What is Life? All Images Courtesy of National Geographic What are the Characteristics of Living Things?

4. What is Life? All Images Courtesy of National Geographic

5. Characteristics of Life 1.Feed – Ingest solid food, or create own food. 2.Breathe – Exchange of gases between organism and environment. 3.Respire – Utilize energy. 4.Excrete – Expel waste products. 5.Grow – Increase in size. 6.Reproduce – Produce offspring. 7.Respond – React to environmental stimuli. 8.Move – Whole body or parts.

6. Characteristics of Life – Another Opinion 1.Organization – Being composed of cells. 2.Growth – Increases in size. 3.Adaption – Conforming to the environment (evolving). 4.Reproduction – Producing offspring. 5.Metabolism – Transforming and using energy. 6.Homeostasis – Regulating the internal environment. 7.Response – Reacting to environmental stimuli.

7. Scientific Method Question (based upon observations) Hypotheses (possible explanation) Experiment (collect data) Evaluate Data (conclude) Reject/Accept Hypotheses

8. Hypotheses – Testable Predictions If, then statements. Should contain Independent and dependent variables. Be careful not to make it a conclusion statement. -Temperature causes leaves to change color- Be careful about vagueness, your hypotheses should explain how you intend to prove your statement. -UV light may cause skin cancer-