1. Turner College & Career High School  2016
The Study of Biology
Turner College & Career High School  2016

2. What is Biology? Biology is the study of all living things.
Living things are called organisms.
Organisms include bacteria, protists, fungi, plants, & animals.

4. All Living Things Share Common Characteristics
Basic unit is the cell.
They reproduce.
All based on universal genetic code (DNA).
They grow & develop.

5. All Living Things Share Common Characteristics
Obtain & use materials & energy.
They respond to their environment.
Maintain a stable internal environment.
As a group, living things evolve, that is they change over time.

6. 1
Basic Unit is the Cell

7. Facts About Cells Cells are the smallest living unit of an organism.
All cells contain living material called cytoplasm.
All cells are surrounded by a cell membrane that controls what enters & leaves the cell.

8. Organisms are Grouped by the Number of Cells
Unicellular organisms
Living organism made up of one cell.
Multicellular organisms
Living organism made up of many, specialized cells.

9. 2
Organisms Reproduce

10. Types of Reproduction Sexual reproduction Involves two parents.
Egg fertilized by sperm to make a zygote.
Offspring different from parents.

11. Types of Reproduction Asexual Reproduction
Involves a single organism or cell.
Cell divides.
Offspring identical to parent.

12. Cells have a Genetic Code3
Cells have a Genetic Code

13. Genetic Code
Deoxyribose nucleic acid (DNA) carries the genetic code for all organisms.
All organisms contain DNA.
DNA codes for the proteins that make up cells & do all the work.

14. Organisms Grow & Develop4
Organisms Grow & Develop

15. Growth & Development
Organisms grow by producing more cells & by cell enlargement.
Organisms develop as they mature into an adult organism.

16. Cells Need Food & Energy5
Cells Need Food & Energy

17. Food Requirements Autotrophs can make their own food.
Heterotrophs can not make their own food.

18. Metabolism Sum of all the chemical reactions in an organism.
All require energy.
Sunlight is the ultimate energy for life on Earth.

19. Metabolism Cellular Respiration
Cells releasing the chemical energy stored in foods.

20. 6
Respond to Stimuli
Organisms respond to environment (temperature, water, food supplies) in order to survive & reproduce.

21. 7
Homeostasis
Keeping the internal environment of the cell or organism within the ranges required for life.
Stable internal conditions of ph, temperature water balance, etc.

22. 8
Living Things Evolve
Groups of organisms (not individuals) change over time in order to survive within changing environments.
Fossil records show changes in groups of organisms.

23. Life is Organized on Several Levels