1. CHAPTER 1 BIOLOGY: THE STUDY OF LIFE

2. Section 1.1

3. What is biology? Bio = “life” Biology is the study of life
How do living things interact with the environment?
How do living things interact with other living things?

5. Biologists also find solutions to ecological, environmental, medical problems.

6. Where have all the bees gone?
Farming industry relies on bees to pollinate their crops to generate fruits & vegetables
Farming communities in the U.S. have dropped by 50-70%, colony collapse disorder
Why?
Fungus, weather changes, predation
Radiation

7.  Characteristics of Living Things
Organism = something that displays the characteristics of life, something that’s living

8. Why isn’t a car considered living?
All living things:
Have an orderly structure
Produce offspring
Grow and develop
Adjust to changes in the environment
Why isn’t a car considered living?

9. Living Things Are Organized
Organization occurs inside and outside an organism
Cells = smallest unit that can perform life processes
Unicellular = single celled organism
Multi-cellular = more than one cell

10. Organization goes from simple to complex
Start with the (1) Atom

11. Atoms make up (2) Biomolecules like proteins, fats, carbohydrates, DNA, RNA

12. Biomolecules make up (3) Organelles which make up a (4) Cell

13. Cells come together to form the (5) Tissues of different (6) Organs

14. Organs work together in an (7) Organ System to allow an (8) Organism to function.

15. Living Things Reproduce
Reproduction = production of offspring, necessary for the continuation of a species
Species = a group of organisms that can interbreed and produce offspring that can also breed

16. But what about a mule? But what about a liger?

17. Living Things Grow and Develop
Offspring grow and mature to also be able to reproduce

18. Living Things Can Adjust to Their Surroundings
Homeostasis = organisms can maintain a stable internal environment even though the outside environment is changing
Including obtaining and using energy, gas exchange with the environment, temperature control, and water balance
Stimulus = something that causes the organism to react
Response = the reaction to a stimulus

19. Examples (try to identify the stimulus):
The body shivers when the temperature gets cold
When you turn the lights off your pupils dilate to allow in more light
Your body produces more insulin when there’s more glucose in the bloodstream

20. Baby Akbar grew to 19 pounds at birth b/c mom had gestational diabetes and didn’t have access to medical care. Baby A was exposed to high levels of glucose in the womb which led to his large size.