what makes something a living thing?
DESCRIPTION
Biology:. The study of life . What makes something a living thing?. Canis lupis familiaris . . Why is one living and the other is not? . Cells/Organization . Cell -Smallest unit capable of all life functions . Unicellular - one cell ex. Bacteria - PowerPoint PPT PresentationTRANSCRIPT
Whatmakes
something a living thing?
Canis lupis familiaris.
Biology:The study of life
Why is one living and the other is not?
Cells/Organization Cell-Smallest unit capable of all life functions
Unicellular- one cell ex. Bacteria
Multicellular- organism made of many cells
DNA/Heredity• Deoxyribonucleic acid - carries
the code for all organisms
Reproduction
Sexual reproduction - involves 2 parents
Is it essential for an individual to reproduce?
Asexual reproduction - involves a single parent
Grow and Develop
Organisms develop as they mature into adult organisms
Organisms grow as they produce MORE CELLS
Obtain and use Energy/Metabolism
Why do organisms need energy?
How do organisms obtain energy?
What reactions are going on in our body?
Metabolism = the total of all chemical reactions in an organism
Energy Use/Metabolism
• Autotrophs( plants) – use energy from the sun to make their own food “glucose”
• Heterotrophs- ingest food for energy
Where does all energy come from?
Energy/Metabolism Contd.
• Catabolism- The process of breaking down complex substances into simpler substances
• Release energy –Digestion
Energy/Metabolism cont.
• Anabolism- the process of building complex substances from simpler substances – Requires energy – Building up cells
How do humans do this?
Respond to Stimulus
• Light • Temperature • Odor • Sound • Pressure• Gravity • Heat • Water
Stimulus- anything that causes an organism to react
Evolution/Adaptation• Evolution- Groups of Organisms will change
over time in order to survive with changing environments
• Adaptation- characteristics that improves organisms ability to survive and reproduce
Homeostasis
Homeostasis- the ability of an organism to maintain its internal environment despite conditions in the external environment.
Human body temperature is………if body temperature rises, you sweat.if body temperature lowers, you shiver.
Giant tortoise- life span = 150 years
Limited Life Span
"It's older than the great pyramids, older than Stonehenge”
4,770-year-old "Methuselah" bristle-cone pine.
"When Christ walked the earth it was already 2,700 years old."
California, USA
Mayfly – life span = one day!
A Lesson in the Art of Enjoying Life!
http://www.youtube.com/watch?v=fFnAdeaoG74
Alive or Not?
Is a virus living?
1. Made up of one or more cells2. Have DNA3. Can reproduce4. Grow and develop5. Obtain and use energy6. Respond to their environment 7. Can change over time(evolve)8. Maintain Stable Internal environment 9. Limited life span
All Living things share these characteristics.