Campus – Ryan Hall. Student Life on Campus Studying in the Library.
Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied...
-
Upload
bartholomew-small -
Category
Documents
-
view
213 -
download
0
Transcript of Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied...
![Page 1: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/1.jpg)
Studying LifeSection 1-3• Identify characteristics of living things.
• Explain how life can be studied at different levels.
![Page 2: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/2.jpg)
Brainstorm Characteristics of Living Things
Made up of cellsReproduceGrow and developObtain and use materials and energyRespond to stimuli (or environment)Maintain a stable internal environment
(homeostasis) As a group, change over time (evolve)Based on a universal genetic code
![Page 3: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/3.jpg)
1. Made Up of Cells
Describe a cell.Def: Living matter enclosed in a
barrier that separates it from its surroundings
The smallest units of an organism that can be considered to be alive!
What characteristics of life do cells exhibit?
![Page 4: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/4.jpg)
2. Reproduction
2 types:
1. Sexual reproduction – cells from 2 different parents unite to form the first cell of a new organism (example?)
2. Asexual (“a” = “not”) – single parent (example?)
Which type do you think is most common?
![Page 5: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/5.jpg)
3. Grow and Develop
Define “growth”.What is the difference between
“growth” and “development”?Do all organisms exhibit BOTH?Can nonliving things exhibit growth
and development?You are actually at one of the biggest
development stages in your life.When does growth and development
stop?
![Page 6: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/6.jpg)
4. Obtain and Use Materials and Energy
What is the purpose of this?It is like building a house with materials
gathered and energy used. (And there are always waste products left over!)
Organisms gather materials, break them down and make new materials through chemical processes. The combination of all these processes is called metabolism.
So where do we get these materials and energy?
![Page 7: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/7.jpg)
5. Respond to Stimuli (or Environment)
Stimulus: a signal to which an organism responds (examples?)
![Page 8: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/8.jpg)
6. Maintain a Stable Internal Environment (Homeostasis)
Examples: temperature, respiratory rate
![Page 9: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/9.jpg)
7. As a Group, Change Over Time (Evolve)
What do we mean when someone says you’ve adapted to your new situation (i.e., city, school, teacher, break-up)?
How can a plant become adapted to changing environmental conditions?
In biological terms, “adaptation” is a long-term process of change. Individuals don’t adapt; a group of organisms changes over time.
How does this type of adaptation occur?
![Page 10: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/10.jpg)
8. Based on a Universal Genetic Code
Back to reproduction – organisms inherit DNA from their parent(s), which can cause different traits to be passed along. “Only the strong survive”
![Page 11: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/11.jpg)
Branches of Biology
2 main categories:
1. Theoretical science Build on the science knowledge base
Examples: microbiologists, botanists, paleontologists, ecologists
2. Applied or Practical science USE the knowledge of theoretical
science to improve life
Examples: physicians, medical researchers, wildlife managers, foresters
![Page 12: Studying Life Section 1-3 Identify characteristics of living things. Explain how life can be studied at different levels.](https://reader036.fdocuments.us/reader036/viewer/2022082818/56649f165503460f94c2c8a3/html5/thumbnails/12.jpg)
Levels of Organization1.Molecular – groups of atoms (water, DNA,
proteins, etc)
2.Cells – plant, nerve, bacteria
3.Groups of cells – tissues, organs
4.Organism – individual living thing
5.Population – group of organisms of ONE TYPE that live in the same area
6.Community – all populations that live together in the same area
7.Ecosystem – a community and its nonliving surroundings
8.Biosphere – the part of Earth that contains all ecosystems