1. Biology and the study of Life

2. Objectives Define biology
Identify possible benefits from studying biology
Summarize the characteristics of life

3. What do we study in biology???

4. Biology—the science of life
Chapter 1
The Study of Life
1.1 Introduction to Biology
Biology—the science of life
origins and history of life and once-living things
structures of living things
how living things interact with one another
how living things function

5. What is Life????

6. 1. Living things are made of one or more cells.
Chapter 1
The Study of Life
1.1 Introduction to Biology
1. Living things are made of one or more cells.
Cells are the basic unit of structure and function in all living things.
Unicellular
Multicellular

7. Activity
List a many types of cells that you can think of on your paper.

8. A cell is the smallest unit capable of all life functions.
The Study of Life
Living Things Display Organization
A cell is the smallest unit capable of all life functions.

9. All organisms grow and develop(change over time)
The Study of Life
Grow and Develop
All organisms grow and develop(change over time)

10. All living things reproduce in one of the following ways:
The Study of Life
4. Reproduces
All living things reproduce in one of the following ways:
Asexual reproduction - Producing offspring without the use of gametes.
Sexual reproduction - Producing offspring by the joining of sex cells.

11. A behavior is a complex set of responses.
The Study of Life
Responds to Stimuli
Living things will make changes in response to a stimulus in their environment.
A behavior is a complex set of responses.
Venus flytrap

12. What ways do we respond to stimuli
What is stimuli?
What is your response to stimuli when…….
You are going to have a pop quiz right now?

13. Homeostasis and metabolism
Living things take in energy and use it for maintenance and growth and to maintain homeostasis (the tendency of a cell or organism to maintain its internal environment)
Metabolism is the sum of all the chemical reactions that take place in an organism.