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Biology- The Study of Life

Biology- The Study of Life. A Martian was sent to Earth to bring back something biotic (living) versus something abiotic (nonliving). In your group of four, list characteristics the Martian should be looking for. You have 5minutes. Characteristics of Living Things.

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Biology- The Study of Life

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  1. Biology- The Study of Life A Martian was sent to Earth to bring back something biotic (living) versus something abiotic (nonliving). In your group of four, list characteristics the Martian should be looking for. You have 5minutes.

  2. Characteristics of Living Things • 1. Made of Cells (the building blocks or basic unit of structure and function of living things) • Prokaryote- pro=before and kary=nucleus • First cells on Earth (cyanobacteria) • Eukaryote- eu=true and kary=nucleus

  3. Prokaryote- pro=before and kary=nucleus • First cells on Earth (cyanobacteria) • Eukaryote- eu=true and kary=nucleus • Unicellular-uni=one, single cell • Multicellular-multi=many cells

  4. Prokaryotes

  5. Eukaryotes

  6. 2. Reproduce • Survival of the species preventing extinction • Individuals do not have to reproduce • Asexual- single parent through mitosis Child is identical to parent • Sexual- two parents through meiosis gamete formation

  7. 3. Contain Genetic Information • DNA-deoxyribonucleic acid found in the nucleus of the cell • Controls the cell • Identical twins have the same DNA

  8. 4. Grow and Develop • Single cell- grow only • Develop-cells multiply and differentiate as in fertilize egg zygote fetus infant

  9. 5. Obtain and Use Energy • Metabolism- all chemical reactions that occur within the cell • Autotrophs- auto=self and troph=feed These are the producers. Convert abiotic factors into biotic factors through photosynthesis

  10. Heterotrophs- hetero=other and troph= feed • Primary consumer= herbivore-plant eater • Secondary consumer=carnivore-meat eater and/or omnivore-eat both plants and meat • Decomposer-obtain energy from dead organisms remains (bacteria and fungi)

  11. Cellular Respiration- cell breaks down glucose releasing energy (ATP) in the mitochondria

  12. 6. Respond to Their Environment • Stimulus- a signal to which an organism responds • Organisms that adapt to changes in their environment have a higher survival rate

  13. 7. Homeostasis- Maintain a stable internal environment • Body temperature 98.6°C (sweat and chills) • CO2 level high, breathing rate increases • 8. Evolve or change

  14. Did the Martian make a good choice?

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