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What is Biology?

What is Biology?. Biology is the Study of Life. Biologist study the interactions of life. Entomologist Anthropologist Ornithologist Botanist Zoologist. How does science define life?. There are 8 different Characteristics that an organism must have to be considered. What might these be?

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What is Biology?

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  1. What is Biology?

  2. Biology is the Study of Life • Biologist study the interactions of life. • Entomologist • Anthropologist • Ornithologist • Botanist • Zoologist

  3. How does science define life? • There are 8 different Characteristics that an organism must have to be considered. • What might these be? http://www.youtube.com/watch?v=juxLuo-sH6M • Share with the person next to you and come up with 8 characteristics of all living things.

  4. Cells/Organization • Living things are highly organized: they are all composed of tiny living units called cells. • Cells are the smallest units that are considered alive. • Some organisms consist of only a single cell, others have trillions. • Multicellular • Unicellular Image from: http://www.time.com/time/daily/special/genetics/ethics.html

  5. Obtain and use energy • Living things take in energy to grow, develop and reproduce. • The chemical reactions that build up or break down materials is called metabolism. Image from http://photographytips.com/page.cfm/3575

  6. Reproduction • Individual organisms die, but the species continues because ofreproduction. • Reproduction without genetic contribution from two parents is calledasexual. • Sexualreproduction produces offspring with genetic material from both parents. Imae from http://www.karlloren.com/biopsy/p66.htm Image from http://www.cccturtle.org/contents.htm

  7. Growth and Development • Living things grow over their lifetimes. • Single- celled organisms increase their volume and multicellular organisms add to the number of cells in their body. • Development example: seed to apple tree Image from http://www.sosun.com/company.html

  8. Response to the Environment • When presented with the proper stimulus, a living organism will respond. • Example:chemical produced by a plant to keep caterpillars away. Image from http://greennature.com/gallery/caterpillar-pictures/cinnebar-caterpillar.html

  9. Living things evolve • Groups of organisms will evolve or change over time. • Evidence of these changes can be found in living things and fossils. • Darwin and Natural Selection provide the evidence satorismiles.com/.../

  10. Maintain stable internal environment • Organism must keep their internal environment stable even when the external environment changes. • Maintaining an organisms internal environment is referred to as homeostasis. Ex: humans internal temperature

  11. Universal genetic code • All information needed to live and grow is stored in a genetic code known as DNA. • Information is passed from parent to offspring. http://www.ucmp.berkeley.edu/glossary/gloss3/DNA2.gif

  12. Any Questions?Let’s review….What are the characteristics of life?Write down the characteristics we talked about today

  13. Do scientists consider this living? • Consider all 8 characteristics of life • Do you think a virus is living or not and defend your answer? http://s.hswstatic.com/gif/light-virus-1.jpg

  14. Unity and diversity of life How is the unity of life, the fact that all living things share the same characteristics explained?

  15. Let’s go outside! • Part 1- Collect and/or observe 5 specimens from outside. • They can be anything as long as we are not damaging the ecosystem • Write down observations during your time outside. • You have 10 minutes • You will come back inside and pair up with another person. • Compare your observations. Group your specimens together and indicate why you grouped them that way. • Make a list of similarities and differences.

  16. Unity: due to common ancestry Diversity: having different forms through adaptations in response to different environments http://www.riverdell.org/cms/lib05/NJ01001380/Centricity/Domain/85/evolutionary_tree_of_life.gif

  17. Diversity • Diversity of organisms has occurred through adaptations to different environments. • Which characteristic of life does this connect to? http://www.youtube.com/watch?v=nYBT1pC7uuA http://2.bp.blogspot.com/-1Lq_mfiF1BE/UGM7XK2RtzI/AAAAAAAAA_0/IutmR0TLYfw/s1600/BIOLOGY.png

  18. Taxonomy • Organization of organisms that have similar structures and function. • Why should we classify organaisms? http://www2.estrellamountain.edu/faculty/farabee/BIOBK/kingdoms.gif

  19. Six Kingdoms and 3 Domains http://go.hrw.com/venus_images/science/mbbios02005a.jpg

  20. Classification Carl Linneaus – developed modern taxonomy • Organized organisms based on common structures which reflects evolutionary relationships • Developed two part naming system called Binomial Nomeclature http://media-cache-ak0.pinimg.com/236x/da/83/07/da830730e48278b1393606ce552f8ccc.jpg

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