1. The Science of Biology
Chapter 1

2. What is Biology?
The study of life (Greek word bios, meaning life and logos, meaning study

3. What characteristics do living creatures have in common?
Properties of Life
What characteristics do living creatures have in common?

4. Living creatures are ORGANIZED
All made of the same collection of chemicals, but we are organized as…
organelles & cells
plant cells & animal cells
plant cell
animal cell

5. Living creatures are ORGANIZED
All made of the same collection of chemicals, but we are organized as…
organs & organ systems
respiratory, circulatory, digestive, etc.

6. Living creatures RESPOND
Respond to internal changes
Homeostasis
maintaining balanced conditions inside the body
Respond to external changes

7. Living creatures use ENERGY
Metabolism
all the reactions your body performs to make & use energy
eating & digestion & elimination of waste
synthesis = building
cellular respiration = making energy
mitochondria

8. Living creatures GROW & DEVELOP
Change over an individual’s life time
get bigger
mature
so they can reproduce

9. Living creatures REPRODUCE
Make the next generation
Asexual-single parent
Sexual- two parents (sperm and egg)

10. Living creatures EVOLVE
Living things adapt and can evolve (change of time)

11. ORGANIZATION
ORGANISM-anything that possesses all of these characteristics of life.
SPECIES-organism that can interbreed and produce fertile offspring (if not leads to EXTINCTION)

12. Levels of ORGANIZATION

13. Levels of Biological Organization
Biosphere-Earth

14. Scientific Inquiry: Thinking Like a Scientist
Scientists collect data by making careful observations.
An observation is a record or note made by studying something using the senses.

15. Data is information gathered through observations.
An inference is a deduction or assumption based on observations and prior knowledge.

16. Inferences……

18. THE SCIENTIFIC METHOD

19. THE SCIENTIFIC METHOD Observation Hypothesis Experiment Collect Data
Analyze
Conclusion

20. Any Questions?
Quick Review…

21. 1. The process by which organisms keep their internal conditions relatively stable is called
metabolism
a genome
evolution
homeostasis

22. 2. Which sequence illustrates the increasing complexity of levels of organization in multicellular organisms?
(1) organelle → cell → tissue → organ → organ system → organism
(2) cell → organelle → tissue → organ → organ system → organism
(3) organelle → tissue → cell → organ → organ system → organism
(4) cell → organism → organ system → organ → tissue → organelle

23. 3. The diagram below represents levels of organization in living things.
Which term would
best represent X?
human
stomach
(2) tissue
(4) organelle

24. 4. A housefly ingests raw garbage, digests it, and later egests some materials. With which life process are all of these events most closely associated?
growth
nutrition
transport
synthesis