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Regents Review 2

Regents Review 2 . SUCKAS!!!!!. Movement of water. Name the term that describes the movement of water Osmosis Describe the movement of water Area of high water (%) to an area of low water (%) What determines the percentage of water? Dissolved solute (salt, sugar, protein, etc.).

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Regents Review 2

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  1. Regents Review 2 SUCKAS!!!!!

  2. Movement of water • Name the term that describes the movement of water • Osmosis • Describe the movement of water • Area of high water (%) to an area of low water (%) • What determines the percentage of water? • Dissolved solute (salt, sugar, protein, etc.)

  3. The Effects of Osmosis on Cells • How would a cell (5% salt) placed in a 10% salt solution look like? • Shrivel • Name that solution • Hypertonic • How would a cell (5% salt) placed in a 1% salt solution • Bloat or explode • Name that solution • Hypotonic

  4. Effects of Osmosis Continued • What would happen if the cell was placed in a .9% salt solution? • Nothing • Why? • Name that solution • Isotonic

  5. Animal vs plant cells • How will an animal cell placed in a hypertonic solution look? Plant cell? • How about if they were placed in a hypotonic solution? • Why does the plant cell not burst? • Plant cell has a cell wall

  6. Making Connections in cells • List the different cell organelles • Choose two organelles and state how each works together to maintain homeostasis in the cell

  7. Body Systems • List 7 body systems • Choose two systems and state how they work together to maintain homeostasis in the human • Digestive and circulatory • Endocrine and digestive • Endocrine and circulatory • Circulatory and nervous

  8. Immunity • How does active and passive immunity differ? • Active – have an immune response and generate memory cells (permanent) • Passive – get antibodies from someone else (temporary)

  9. Humoral Vs. Cell Mediated Immune Response • Define humoral response • Which blood cells are involved? • B cells, T Helper and Macrophages • Describe the response • Macrophage ingests pathogen; presents antigen to T helper, T helper activates B cells (into plasma and memory cells) • Plasma cells produce antibodies

  10. Antibodies…what are they and how do they work? • What are they made of? • Protein • How do they work? • Recognizes specific antigen by shape of antigen

  11. Cell Mediated • Summarize cell mediated response • Macrophage ingests infected self cell • Presents antigen to T helper • T helper activates cytotxic T cells • Cytotoxic T cells release enzymes to destroy infected self cells • T suppressor deactivates Cytotxic T cells

  12. Respiration • Why do cells undergo cell respiration? • Release stored energy from food • Where does it occur? • Mitochondria and cytoplasm • What are the reactants? Products? • Reactants – sugar and oxygen • Products – carbon dioxide, water and ATP • Name two body systems that aid cell respiration

  13. Photosynthesis • Give an example of an organism that undergoes photosynthesis • Where does it take place in a plant cell? • Chloroplast • What are the reactants? Products? • Reactants – carbon dioxide and water, light energy needed • Products – glucose and oxygen, some ATP

  14. Light dependent reactions • Name the two light dependent reactions • Photolysis and Photophosporylation • What is photolysis? Which photosystem is it? • Splits water into hydrogen and oxygen(waste), system II • What is photophosphorylation? Which system? • ATP generated here, system 1

  15. Light Independent reaction • What is the product of these reactions? • Glucose • Where does it take place? • Stroma of chloroplast • Does it require light? Explain • Not directly but uses the hydrogen and ATP from the light dependent reactions

  16. Cell Respiration Vs. Photosynthesis • Does cell respiration take place in plant cells? • YES, they have mitochondria

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