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Biology 11/12

Biology 11/12. Warm up: Draw and name each shape of bacteria below:. Today’s activities: Introduction to online testing environment Students log on to online testing environment Students complete online practice test.

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Biology 11/12

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  1. Biology 11/12 Warm up: Draw and name each shape of bacteria below: Today’s activities: Introduction to online testing environment Students log on to online testing environment Students complete online practice test. For those without log in: p.493 #1-11 for review of concepts is the replacement assignment.

  2. Biology 11/6 Warm up: What is an endospore? Today’s activities: Bacteria video/discussion/Mini quiz Due today: -Warm up questions -Notes -Poster -p.477 #1-6 -Define all bold terms in pages 471-477

  3. Biology 11/5 Warm up: What is a saprobe (saprophyte)? Today’s activities: Prokaryotic cells video/discussion Mini quiz p.477 #1-6 due Wed Define all bold terms in pages 471-477 due Wed

  4. Biology 11/4 Warm up: Write down everything you know about prokaryotic cells. Today’s activities: Prokaryotic cells video/discussion Mini quiz Poster assignment

  5. Biology 10/31 Warm up: No warm up sheet needed this week Today’s activities: Revisit old test Video: Mythbusters “Fright Night” episode https://www.youtube.com/watch?v=9YwPngnOyUE

  6. Biology 10/25 Warm up: What are the benefits and challenges of the “green revolution”? (see page 142) Today’s activities: Video Natural resources Work time on assignments (packet due today)

  7. Biology Assignments Due 10/25 • Warm up questions / Score sheet • Study Guide packet • P.127 #1-5 (periods 1 and 3 only…per 6 turned this in last week) • P.135 #12-23 (periods 1 and 3 only…per 6 turned this in last week) • Read pages 139-143 write a 3 sentence summary of each subsection (9 subsections)

  8. Biology 10/24 Warm up: What are 3 things that humans can do to reduce CO2 in the atmosphere? Today’s activities: Standards test After test: -Read page 139-143…write a 3 sentences summary of each subsection (9 subsections). Due Friday

  9. Biology 10/23 Warm up: In ecosystems, why does just a small percentage of plant biomass get converted into animal biomass? Today’s activities: Practice test (mini-quiz) Yesterday:Work time on study guide (you can use this on the test)

  10. Hawk Woodpecker Grass Hopper Grass Practice question #1 • Which organisms are : • Primary Consumers (1st order) • Primary producers • Tertiary Consumers (3rd order) • Secondary Consumers (2nd order)

  11. Hawk Woodpecker Grass Hopper Grass Practice question #2 • Label each organism as one of the following categories: • herbivore • autotroph • carnivore

  12. Practice Question #3 How much energy/biomass is available at each level compared to the producers? • Explain why there is less energy/biomass stored in each trophic level as you move “up” the energy/biomass pyramid. • Hint: Why isn’t it all converted into new biomass?

  13. Practice Question #4 • From the food web above, place each organism into the correct category: • -carnivores • -herbivores • -omnivores • -parasite • -autotrophs

  14. Practice question #5

  15. Practice question #6 • 5.)   Describe 1 example (from nature) of each of the following relationships (discuss which organism(s) gain benefit/harm) •  Mutualism: • Commensalism: • Parasitism: • Competition • Predation

  16. Practice question #7 • Humans affecting ecosystems: • Choose one organism in this ecosystem to be harmed by a human action. (hunting, pollution, habitat destruction, etc.) • Explain how other organisms will be affected by lack of competition, lack of predation, etc. Which organisms are helped, which are hurt? (include discussion of at least 2 other organisms in this ecosystem)

  17. Practice question #8 Using the information in the diagram, explain 3 things humans could do to reduce CO2 in the atmosphere.

  18. Practice question #9 • Using the information from the diagram, describe 2 natural ways to add nitrogen in the soil without using man-made fertilizer.

  19. Biology 10/22 Warm up: Describe 1 density-dependent limiting factor for a population and Describe 1 density-independent limiting factor for a population. Today’s activities: Work time on study guide (you can use this on the test) Yesterday: p.127 #1-5 p.135 #12-23 due Friday

  20. Biology 10/21 Warm up: Choose a biological cycle and explain at least 5 parts of the cycle and how they are connected in the cycle. (you may draw/label this if you wish) Today’s activities: Work time on review questions p.127 #1-5 p.135 #12-23 PERIOD 6: Final day to type cycles project.

  21. Biology Assignments Due 10/18/13 • Warm up sheet • Notes • P.80 #1-6 • Page 127 #1-5 (6th period only) • Page 135 #12-23 (6th period only) • Ecology project (due Friday 1,3 period)

  22. Biology 10/18 Warm up: Explain one way that humans are affecting ecosystems. Today’s activities: Video clips (cycles, carrying capacity, etc.)/ notes p.80 #1-6

  23. Biology 10/17 Warm up: no warm up Today’s activities: 1,3 periods: Work time on project Period 6: p.127 #1-5 and p.135 #12-23 due Friday (6th period will have one more day of work time on project on Monday)

  24. Biology 10/16 Warm up: no warm up Today’s activities: Work time on project

  25. Biology 10/15 Warm up: no warm up Today’s activities: Work time on project

  26. Biology 10/14 Warm up: Why does the energy in food webs become reduced in higher trophic levels? (Why doesn’t it all get converted into biomass?) Today’s activities: Mini-quiz: review of last week’s topics Notes + practice mini-quiz

  27. Review Mini-Quiz 10/14 • 1. Define “primary producer” • 2. Define “omnivore” • 3. Define “detritivore” • 4.Which level of the energy/biomass pyramid contains the most energy/biomass? • 5.) Which level of the energy/biomass pyramid contains the least energy/biomass?

  28. Community interactions

  29. Community Interactions: Symbiosis • A close and permanent association between organisms of different species • Commensalism – a relationship in which one organism benefits and the other is not affected • Example: Barnacles on a whale

  30. Community interactions • Mutualism – a relationship in which both organisms benefit from each other • Example: Birds eating pest off a rhino’s back • Parasitism – A relationship in which one organism benefits and the other is harmed • Example: Ticks on a dog

  31. Community interactions • Competition - a relationship where both organisms compete for the same energy source • Example: a rabbit and a deer competing for grass, plants competing for light • Predation - a relationship where one organism preys upon another • Example: a wolf hunting a rabbit

  32. Table 53.1 • Community interactions summary

  33. Notes Mini-Quiz 10/14 • 1. Give an example of organisms who engage in mutualism. • 2. Give an example of organisms who engage in commensalism. • 3. Give an example of organisms who engage in parasitism. • 4. Give an example of organisms who engage in competition. • 5. Give an example of organisms who engage in predation.

  34. Biology 10/10 Warm up: In ecology, what does it mean if an organism is a consumer? Today’s activities: Notes + practice mini-quiz Read page 63-73 Food web posters due Today

  35. ECOLOGICAL PYRAMIDSand the Transfer of Energy in Ecosystems Which animals are at each level? What type of ecological niche do they each belong to?

  36. Ecological Pyramids: graphs which illustrate the trophic levels in a community.

  37. Less Energy More Energy Most ecological pyramids are large at the base and narrow at the top. This is because every time that an organism is eaten by the next trophic level, some of the energy is lost as heat.

  38. 3 TYPES OF PYRAMIDS: • Pyramid of Biomass • Pyramid of Energy • Pyramid of Numbers

  39. Pyramid of Biomass: • Illustrates the amount of biomass in each trophic level • Biomass weight is determined after dehydration • Shows the amount of matter lost between trophic levels. • Measured in Kg, grams or pounds

  40. Pyramid of Biomass Pyramid of Biomass

  41. Pyramid of Energy: • Shows the energy available at each trophic level. • The size of the blocks represents the proportion of productivity • Measured in Joules or Calories

  42. Pyramid of Energy: • Most of the energy available to the community is in the 1st trophic level. • Only 10-20% of the energy is available to the next trophic level (≈ 90% lost)

  43. Pyramid of Numbers: • Illustration of the number of organisms at each level

  44. What kind of Pyramid is this? Energy, the trophic levels are measured in Kilocalories

  45. Human Population Growth How can more people be supported on Earth when there is a limited supply of resources? It depends on what they are eating…

  46. Mini-Quiz 10/10 • 1. What does a biomass pyramid illustrate? • 2. If a 150 pound animal ate nothing but plants, estimate how many pounds of plant material it takes to build 150 pounds of animal biomass. • 3. If a 150 carnivore ate nothing but herbivores, estimate how many pounds of plant material it takes to build 150 pounds of carnivore biomass. • 4. Which category of organisms contain the most biomass on a biomass pyramid? • 5. Which category of organisms contain the least biomass on a biomass pyramid?

  47. Biology 10/9 Warm up: In ecology, what does it mean if an organism is a producer? Today’s activities: Notes + practice mini-quiz Read page 63-73 Food web posters due Thursday

  48. Food Chains and Food Webs

  49. What is a food chain? A food chain is “a sequence of organisms, each of which uses the next, lower member of the sequence as a food source”

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