1. Chapter 1- Scope of Biology Text- Biology, Exploring Life
Biology I- CP
Chapter 1- Scope of Biology
Text- Biology, Exploring Life

2. What is Science? Scientia (latin) - to know. Definition-
A branch of knowledge or study dealing with a body of facts systematically arranged.
What is Biology?
Bios- life; logos-study
Study of living things and their interactions.
Characteristics of life-
Movement, growth, reproduce, breathe, response to stimuli, change shape, excretion.

3. What are characteristics of all living things?
What are characteristics of a burning candle?

4. Biologists use 6 characteristics to classify something as living or “alive”
All Living Things:
1. Are made of cells
A cell is the basic unit of structure and function in living things
“building blocks of life”
2. Use energy
Plants use the sun energy (sunlight) to produce their own food (producers).
Animals (consumers) get energy by eating plants or other animals.
3. Have features that help them to adapt to their surroundings
Camouflage, blend in with surroundings, ability to store water

5. 6 Characteristics of Living Things (Continued)
4. React to changes in their surroundings
Living things react to stimuli (light, sounds, etc.)
5. Change or develop during their lifetimes
Changes in appearance or size (grow)
6. Reproduce
Produce more organisms of their own kind
Allows each kind of organism to continue living on earth

6. 1.1 Biology is studied from Global Microscopic Scale
Organizational levels of life:
Biosphere
Ecosystem
Organism
Cells
DNA &
Genes

7. Biosphere All parts of the planet with living things.
Includes water bodies
Land masses
Extends several kilometers above Earth

8. Ecosystem
Includes all living (biotic) things and all nonliving (abiotic) features in an environment.
What things are in the example above?
Can you list some other examples of ecosystems?

9. Organism Individual living things Can be large- such as…
or Microorganisms-
Too small to see with our eyes.
Need a microscope.
Ex- Bacteria
Remember ecosystems are dynamic- constantly changing because of interactions of all organisms and the environment.

10. Cells The basic unit of structure and function. A microscopic room
What does that mean?
A microscopic room
Nucleus- control center; directs activities of the cell.
Cell theory: 3 parts
The basic unit of structure and function in all living things.
All organisms are composed of one or more cells.
Cells come from existing cells.

11. DNA & Genes Inheritance
DNA- Deoxyribonucleic Acid
The code of life ; instructions for making needed molecules.
Found in the nucleus of the cell.
Genes- units of inherited information.
Many genes are on one length of DNA.
What are some Examples of genes?
Human Genome Project.

12. Concept 1.2 Biology explores diverse life forms
Textbook- pp. 7-10

13. More than 1.5 million species.
SPECIES - A distinct form of life that can reproduce with each other and produce fertile offspring
More than 1.5 million species.
Species diversity – variety of species in a given area
Insects- most diverse group
Tropical rain forests- most diverse ecosystem. – thousands of species/acre.

14. CLASSIFICATION
A strategy for putting organisms in categories based on similar characteristics.
How to remember?
                                                                                                                                                                                                                                                                      

15. How do we remember?
Domain- Kingdom-Phylum- Class- Order-Family-Genus- Species.
Help Aid:
Do Keep Penguins Cold Or Find Good Shelter.

16. 3 DOMAINS OF LIFE
Domain – broadest (largest)category in classifying life forms
Eukarya
Bacteria
Archaea

17. Eukaryotic Vs Prokaryotic Organisms
Contain nuclei in their cells
Complex organisms
Many are multicellular (many-celled); but not all
Prokaryotic –
No nucleus.
Simple organisms
All are unicellular (1-celled)

18. Domain Eukarya Eukaryotic organisms More complex
4 kingdoms-Plants, Animals, Protists, & Fungi
Plants and Animals –multicellular- many-celled
Fungi and Protists can be multicellular or unicellular.

19. Domain Bacteria Tiny, Single cell, simple, prokaryotic organisms
Has 1 kingdom- Bacteria
Example: Streptococcus (bacteria that causes strep throat)

20. Archaea Tiny, unicellular, prokaryotes
“Extreme” bacteria; the “x games” bacteria
Live in (v.hot, salty, v cold) places;
Examples?

21. 1.3 Ten Themes of Biology
Basic ideas/themes apply to all levels of biology and all organisms.
Help us connect what we will learn.

22. 1. Biological Systems
A system is a combination of parts that makes a complex organization.
The properties are based on the arrangement of the parts and how the parts interact.
All living things are biological systems.
Examples-
human body
ecosytems

23. 2. Cellular Basis of Life All organisms are made of cells
Multicellular organisms have many levels of organization.
Levels of organization:
Cell- basic unit of structure and function
Tissue- group of similar cells that perform a specific function.
Organ- Made up of several types of tissue.
Organ system- several organs that together carry out a major body function.
Organism- has many organ systems that carry out life processes.

24. Cellular Level of Organization-Example

25. 3. Form & Function
The form or structures living things have allow them to perform certain functions or tasks.
Can you come up with some examples?
Form
Function
Bird’s wing
Fly

26. 4. Reproduction & Inheritance
Organisms have the ability to reproduce their own kind.
Genes are responsible for the passing on of traits.
Genes are made up of sections of DNA
DNA contains the information for all characteristics.
Each cell in your body contains a copy of the DNA you inherited from your mother and father.
When a cell divides, it copies its DNA and passes this genetic information on to each of the two cells it produces.

27. 5.Interaction with the Environment
No organism is completely isolated.
In ecosystems, each organism interacts continuously with its environment
Plants make food through photosynthesis
Equation of photosynthesis-
6CO2 + 6H2O C6H12O6 + 6O2
Plant roots break up rocks and release chemicals- acids into the soil.

28. 5. Interaction with Environment continued
Transfer/ recycling of chemicals is key between organisms and their environment in ecosystems.
Can you come up with some examples?
Just as you are constantly sensing and responding to changes in your environment, so are all other organisms.
Some examples?

29. 6. Energy and Life
Life processes such as moving, growing, reproducing require organisms to perform work.
To work there must be a source of energy.
Energy flows into an ecosystem as sunlight and exits in the form of heat.
In an ecosystem energy is converted from one form of energy to another.

30. Energy Pyramid

31. Plants and other photosynthetic organisms are producers in an ecosystem
Producers produce the food in photosynthesis.
The plants use some of the food they produce for their own fuel and building material.
Consumers, are animals and other organisms that eat (consume) the food made by the producers.
The heat is released to the environment
Ecosystem cannot recycle energy.
Life on Earth depends on a continuous supply of energy from the sun.

32. 7. Regulation
Definition- the ability of organisms to regulate their internal conditions.
homeostasis, or "steady state.“
organisms regulate their internal environment, despite changes in their external environment.
Examples?
Sweating helps cool your body.
Panting- cooling mechanism-
Panting causes moisture on the surface of the animal's lungs to evaporate, cooling the body as a result.

33. 8. Adaptation and Evolution
An adaptation-an inherited trait that helps an organism to survive and reproduce in its environment.
What are some examples of adaptations?
A population - a group of organisms of the same species in a defined area.
Individuals of a population vary in their traits.
In natural selection -nature selects individuals with certain traits best suited in environments. They live longer and produce more offspring with these traits.

34. Evolution evolution means "a process of change.“
evolution -a generation-to-generation change in the proportion of different inherited genes in a population.
The above beetle population is evolving.

35. 9. Biology & Society The impact biology has on the life of humans
Examples?
Make a list

36. 10. Scientific Inquiry Asking questions about the natural world.
Using observations & experiments to find answers to the questions.