Gen Bio Unit 4b: Energy Transfer

Theme 4: Energy and Homeostasis

Unit 4b: Energy Transfer (Question-based Objectives)

Keywords: glucose, CO2, H20, ATP, photosynthesis, photosynthetic organisms, chemosynthetic organisms, stomata, mesophyll, air space, electromagnetic (light) energy, chemical energy, thermal (heat) energy, reactants, products, producers, autotrophs, cellular respiration, consumers, heterotrophs, decomposers, heat energy, 10% “rule”


  1. What are the reactants, products, and overall purpose of photosynthesis?
  2. What factors affect photosynthesis, and how can the rate of photosynthesis be determined?
  3. What are the reactants, products, and overall purpose of cellular respiration?
  4. What factors affect cellular respiration, and how can the rate of cellular respiration be determined?
  5. How do cellular respiration and photosynthesis interact as a cycle?
  6. How is energy transferred in a tropical rainforest ecosystem?


  1. Photosynthesis Worksheet
  2. Floating Leaf Disk Assay
  3. Cellular Respiration Worksheet
  4. Yeast Cell Respiration Lab
  5. Watch “Planet Earth: Tropical Rainforest” and write down 10 facts related to the transfer of energy in a tropical rainforest, and write a 1-page reflection on the video.
  6. Photosynthesis & Cellular Respiration Essay Exam Rubric Writing assignment
  7. 50 Winter Observations- focusing on energy needs of organisms seen outside in winter.


  1. Functions of ATP
  2. Functions of light reactions and Calvin Cycle
  3. Functions of glycolysis, Kreb’s Cycle, and Electron Transport
  4. Types and purposes of fermentation

Further Research: calories, glycolysis, Kreb’s cycle, electron transport chain, ATP synthase, light reactions, Calvin Cycle, chlorophyll a, chlorophyll b, photosystems I and II, thylakoids, grana, NADPH, NADP+, enzymes of photosynthesis, oxidation/reduction reactions of photosynthesis



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