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THE SCIENCE OF LIFE

THE SCIENCE OF LIFE. Unit 1: Ch 1. WHAT IS BIOLOGY???.

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THE SCIENCE OF LIFE

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  1. THE SCIENCE OF LIFE Unit 1: Ch 1

  2. WHAT IS BIOLOGY??? http://www.google.com/imgres?imgurl=http://blogs.panda.org/coral_triangle/files/2009/07/_dsc5137.jpg&imgrefurl=http://blogs.panda.org/coral_triangle/2009/07/15/wwf-malaysia-in-kudat-banggi-priority-conservation-area/&usg=__OfUaJjyofRtWfvYf93uULaOQaBE=&h=300&w=450&sz=55&hl=en&start=71&zoom=1&tbnid=YaZI-rTFBfWZbM:&tbnh=162&tbnw=206&prev=/images%3Fq%3Dmarine%2Bbiologist%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1259%26bih%3D815%26tbs%3Disch:10%2C1834&um=1&itbs=1&iact=hc&vpx=114&vpy=393&dur=1311&hovh=183&hovw=275&tx=150&ty=138&ei=IvB-TIaRJ4KClAel6KjtAw&oei=2e9-TMOBCsH98AaEkO3SAw&esq=6&page=4&ndsp=22&ved=1t:429,r:0,s:71&biw=1259&bih=815 • What is biology? • What do biologists study??? • Do they all study the same thing? http://www.google.com/imgres?imgurl=http://armandfrasco.typepad.com/photos/uncategorized/arp2c.jpg&imgrefurl=http://www.moleskinerie.com/2006/06/tom_fricke_anth.html&usg=__y3iVJbR3BR8N5yP8icmuDdS5o-Y=&h=244&w=350&sz=55&hl=en&start=2&zoom=1&um=1&itbs=1&tbnid=Be4yQaEwUETH2M:&tbnh=84&tbnw=120&prev=/images%3Fq%3Danthropologist%26um%3D1%26hl%3Den%26tbs%3Disch:1 http://www.keweenawnow.com/news/audubon_03_02/images/janet_audubon1.jpg

  3. What is an organism? http://www.bigelow.org/bacteria/kingdom_2.jpg

  4. LIVING VS. NON-LIVING How do we know? http://www.animationlibrary.com/animation/18709/Dolphin_in_frame/ http://www.animationlibrary.com/animation/25626/Fire_burns/

  5. 1. __________ • complete living thing carrying out all life processes • Organisms have 1 or more cells • Cell = basic unit of life • Atoms  biosphere

  6. 2. ___________________ Why is this so important? Plants Responding to Light

  7. 3. _________________ • Maintenance of a constant internal environment. • Ex. body temperature http://images.ask.com/fr?q=shiver+cold&desturi=http%3A%2F%2Fwww.spacedaily.com%2Freports%2FResearchers_Reveal_The_Biology_Of_Shivering_999.html&initialURL=http%3A%2F%2Fwww.ask.com%2Fpictures%3Fchn%3Dretail%26geo%3DUS%26l%3Ddis%26o%3D15527%26prt%3D360%26q%3Dshiver%2520cold%26qsrc%3D168%26ver%3D4&fm=i&ac=114&fsel=1&ftURI=http%3A%2F%2Fimages.ask.com%2Ffr%3Fq%3Dshiver%2Bcold%26desturi%3Dhttp%253A%252F%252Fwww.spacedaily.com%252Freports%252FResearchers_Reveal_The_Biology_Of_Shivering_999.html%26imagesrc%3Dhttp%253A%252F%252Fwww.spacedaily.com%252Fimages%252Fshiver-cold-person-bg.jpg%26thumbsrc%3Dhttp%253A%252F%252Fimgtn4.ask.com%252Fts%253Ft%253D13063948936729781658%2526pid%253D23296%2526ppid%253D13%26o%3D15527%26l%3Ddis%26thumbuselocalisedstatic%3Dfalse%26fn%3Dshiver-cold-person-bg.jpg%26imagewidth%3D200%26imageheight%3D160%26fs%3D12%26ft%3Djpg%26f%3D2%26fm%3Di%26fsel%3D1%26ftbURI%3Dhttp%253A%252F%252Fwww.ask.com%252Fpictures%253Fq%253Dshiver%252Bcold%2526page%253D1%2526o%253D15527%2526l%253Ddis%2526pstart%253D0&qt=0 http://www.medimanage.com/my-worries/more-articles/do-you-sweat-excessively-here-are-the-solutions.aspx

  8. 4. ____________________________ • Both living & non-living things can grow…. • How is it different? • How are growth & development distinct?

  9. 5. ________________ • “Like produces like…” • What does this mean? • How is reproduction unique as a life function?

  10. 6. _____________________________ • - characteristic that makes an individual organism better able to survive in its environment. • Over time, beneficial adaptations are “selected for” & the population or species … • Individual organisms do not evolve!!! • Explains the diversity of life. • Pepper Moth “Game” http://www.techapps.net/interactives/pepperMoths.swf • Principles of Natural Selection "Interactive"

  11. http://www.sciencenewsforkids.org/articles/20031112/a228_2194.running.jpghttp://www.sciencenewsforkids.org/articles/20031112/a228_2194.running.jpg http://psych.fullerton.edu/mbirnbaum/psych466/CSW/growth-chart.jpg http://www.irishcatholicdoctors.com/documents/images/CouplewithbabyWORD.jpg 7. __________________________ • What is energy? • Why is (chemical) energy needed?

  12. Where does the energy come from? • ________________________________________ • ________________________________ • __________________________ ___________ convert light energy to chemical energy  stored in glucose (sugar). • Plants, algae, some bacteria • Summary equation for _______________________: light 6CO2 + 6H2O ------------------ C6H12O6 + 6O2 chlorophyll (glucose) • _________________________________ • requires no light • can occur at extreme temp. & press. • Some bacteria (hydrothermal vents) http://www.bigelow.org/foodweb/chemosynthesis.jpg

  13. Where does the energy come from? (cont.) • _______________________________________ • ___________________________ eat other organisms • ______________ break down dead plants & animals & organic waste (poop) • Fungi & bacteria • Help to ________ inorganic raw materials that organisms need ~ex. nitrogen cycle, water cycle, etc, http://www.google.com/imgres?imgurl=http://www.bigelow.org/bacteria/land.jpg&imgrefurl=http://www.bigelow.org/bacteria/&usg=__NEPfhL0AeB_5ttoD14Dfs_5DyFA=&h=250&w=275&sz=23&hl=en&start=0&zoom=1&tbnid=_3H5lXPqV9gj1M:&tbnh=164&tbnw=179&prev=/images%3Fq%3Dproducers%2Bconsumers%2Band%2Bdecomposers%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1259%26bih%3D815%26tbs%3Disch:1&um=1&itbs=1&iact=rc&dur=265&ei=khl_TMjSIIH68AbopMBW&oei=khl_TMjSIIH68AbopMBW&esq=1&page=1&ndsp=20&ved=1t:429,r:4,s:0&tx=139&ty=91

  14. Where does the energy come from? (cont.) • Consumers and producers extract energy from the chemical bonds in sugar through ________________ ______________________. • What is it used for? • Summary equation for cellular respiration: C6H12O6 + O2 -------- 6CO2 + 6H2O +energy (as ATP) + heat (glucose) • In most ecosystems… _______= ultimate source of energy. • Energy is ___________________, NOT _______________________ • Usually released as heat http://www.google.com/imgres?imgurl=http://4.bp.blogspot.com/_c6wsrQ9xmjg/SUFFm_sVr0I/AAAAAAAABXY/y8kNEUVFBQM/s400/cellular%2Brespiration.BMP&imgrefurl=http://biologyknights.blogspot.com/2008/12/power-point-cellular-respiration.html&usg=__F-qqQmU4ULZR85JYCIABrTQc4dQ=&h=242&w=400&sz=29&hl=en&start=96&zoom=1&tbnid=gbldG9PwDdEDgM:&tbnh=120&tbnw=199&prev=/images%3Fq%3Dcellular%2Brespiration%26um%3D1%26hl%3Den%26sa%3DN%26biw%3D1259%26bih%3D815%26tbs%3Disch:10%2C2954&um=1&itbs=1&iact=hc&vpx=416&vpy=471&dur=827&hovh=175&hovw=289&tx=94&ty=138&ei=9x5_TNCVDMP_lgeW9bQG&oei=uR5_TICXI4O88gbYnqVw&esq=6&page=5&ndsp=24&ved=1t:429,r:20,s:96&biw=1259&bih=815

  15. http://videos.howstuffworks.com/hsw/8490-understanding-cells-the-characteristics-of-life-video.htmhttp://videos.howstuffworks.com/hsw/8490-understanding-cells-the-characteristics-of-life-video.htm

  16. Energy Flow: Food Chains Where do almost all communities get their energy? • Does energy only flow through individual organisms? • Community • Food chains ***Arrow always points toward organism taking in the energy & away from the organism “giving up” the energy.*** http://www.nisd.net/burke/technology/foodchains/images/food_chain.jpg

  17. Energy Flow: Food Chains Fifth trophic level Fourth trophic level Third trophic level Second trophic level First trophic level http://www.cnr.vt.edu/forsite/owlpellet/josh/PICTS/foodchain.jpg

  18. Energy Flow: Food Webs http://usr-lazio.artov.rm.cnr.it/darwin2007/presentazioni/Modulo14_file/slide0242_image272.jpg

  19. A Connecticut Food Web

  20. 10% Rule of Ecological Efficiency Nutrients are recycled Energyisnot. Energy Flow: Energy Pyramids http://www.world-builders.org/lessons/less/biomes/deciduous/decfor/dec-py.gif

  21. Toxins & Food Chains • Bioaccumulation • Individual • Biomagnification • As go up food chain • Examples: • Pesticides • DDT • Metals • Mercury, lead http://www.mhhe.com/biosci/esp/2001_gbio/folder_structure/ec/m3/s4/assets/images/ecm3s4_1.jpg

  22. Green plants are food for ___? Grasshoppers eat ___? Marsh hawks feed on ___? Snails feed on ___? Hawks are not producers or decomposers, so they must be ___? Mice are food for __________? Sparrows are food for _____? Fungi and bacteria are ___? Dead matter is food for ______ and _____?

  23. What chain is most efficient? Why?

  24. Quick Review of Chapter 1 Answer: Development 1. What life process is shown here? 2. The rings of a tree indicate what life process? Answer: Growth 3. What is the formula for photosynthesis? Answer: light 6CO2 + 6H2O -------- C6H12O6 + 6O2 chlorophyll

  25. Review Question Cont…. 4. What role does this organism play in the community? Answer: Decomposer that recycles nutrients back to plants 5. True or False: Only consumers undergo cellular respiration? Answer: FALSE 6. True or False: Energy used for life processes is lost in a community and therefore not be recycled Answer: TRUE !!!!!!!!

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