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GHSGT Review

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GHSGT Review

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    1. GHSGT Review Biology Part #1: Ecology & The Cell

    2. Ecology The study of organisms & their environment. An animal’s habitat is where it lives. An animal’s niche is what it does.

    3. Abiotic or Biotic?

    4. Abiotic or Biotic?

    5. Abiotic or Biotic?

    6. Abiotic or Biotic?

    7. Energy Flow in an Ecosystem Energy in most ecosystems comes from the sun.

    8. Consumers & Their Source of Energy

    9. Name the Producer, Consumers & Decomposers in this food chain:

    10. Food Web

    11. Feeding Relationships Food Chain Simple Energy path through an ecosystem Food Web More realistic path through an ecosystem made of many food chains

    12. Food Web Practice… What would happen to the owl population of all of the mice died? What would happen to the bird population if the snake found another source of food?

    13. Producers (aka autotroph) What is the producer in this food web? What is the main source of energy for producers? Plants make food using the sun’s energy in the process of PHOTOSYNTHESIS.

    14. Symbiotic Relationships Symbiosis: when 2 different organisms live together & one or both are affected Mutualism (+, +) Parasitism (+, -) Commensalism (+, 0) This shows mutualism because both the birds and rhino’s are benefiting. Birds eat bugs off rhino and get food while the rhino has the parasites removed from it’s skin.

    15. Mutualism, Parasitism or Commensalism? Parasitism! Parasites, such as fleas, get their food from host organisms.

    16. Mutualism, Parasitism or Commensalism? Commensalism The air plant lives on the tree but the tree is not harmed.

    17. The Cell Section 2 of Day #1 Review Cells are the basic unit of life Discovery of the cell made possible by the microscope.

    18. Prokaryote vs. Eukaryote Cells can be either “prokaryotes” or “eukaryotes” Prokaryote No True Nucleus Just remember…”pro means NO” Tiny Most are single-celled Eukaryote True Nucleus Nucleus is the control center of the cell Larger More complex Contain organelles Organelles are tiny structures with specific functions

    19. Organelles The most common organelles are… REMEMBER Animal cells DO NOT have chloroplasts, only plant cells have chloroplasts.

    20. Plant Cells Green because they have chlorophyll Pigment that captures sun’s energy for photosynthesis Square because they have a cell wall Large vacuole to store water Also needed for photosynthesis

    21. Animal Cells Circle in shape because they have a plasma membrane that surrounds the cell

    22. The Plasma Membrane

    23. Any Questions?

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