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Stack #4595035

QuestionAnswer
1. What is the main source of energy for most living things on Earth? sun
2. Approximately how long does it take solar energy from the sun to strike the planet? 8 mins
3. What is the basic unit of electromagnetic energy? photon
4. What range of sunlight (electromagnetic energy) do the pigments in the autotrophs collect? visible light range
5. Which type of organism makes organic compounds through the process of photosynthesis? autotrophs
6. In which organelle inside the cell does photosynthesis take place? chloroplast
7. Which molecules collect light energy from the sun? pigments
8. Photosynthesis is broken down into two main processes. What are the two processes? Light capture & Carbon Fixation
9. What is the range of the electromagnetic spectrum where pigment molecules capture photon energy to use in Photosystem II and Photosystem I? Photosystem II = P680 Photosystem I = P700
10. Which pigment molecule is the most efficient for photosynthesis? Chlorophyll a
11. Chlorophyll absorbs red and blue wavelengths and reflects what colors? green and yellow
12. Where do the light independent (dark) reactions of photosynthesis take place in the cell? Stroma
13. Which products of Photosystem II and I are needed to run the Dark Reactions? ATP (system II) & NADPH (system I)
14. Where are the oxygen molecules, a waste product of photosynthesis, created? Light dependent reactions - Photosystem II
15. The Calvin Cycle is the most common form of which process? C3 - Carbon fixation
16. Where does the Calvin Cycle get the carbon atoms it uses to create glucose? Atmospheric carbon dioxide
17. Where does Photosystem II and Photosystem I operate in an autotrophic cell? Thylakoid membranes
18. Sequence the flow of energy through an ecosystem starting with the only energy input to the planet and ending with a heterotroph. Sun → autotrophs (plants) → heterotrophs (animals)
19. Approximately what percentage of the Earth’s atmosphere is composed of oxygen? 21% of atmosphere is oxygen
20. Approximately what percentage of the Earth’s atmosphere is composed of carbon Less than 1% is carbon dioxide
21. What are the three stages of the Calvin Cycle? Carbon fixation - Reduction - Regeneration
22. How do the autotrophs get carbon dioxide from the atmosphere into their chloroplasts? Through their stomata and through their intercellular spaces
23. In an autotroph, what is the function of the organ system known as leaves? Photosynthesis - food production
24. What does the vascular tissue phloem carry? Food - Carbohydrates (glucose)
25. What function does xylem tissue in a plant perform? Carries water from the roots to the rest of the plant
26. What do guard cells guard? Guard cells open and close the stomata regulating gas (oxygen and carbon dioxide) exchange to/from the atmosphere
27. What does graph A demonstrate about the rate of photosynthesis? As light intensity increases so does the rate of photosynthesis up to a point where all pigments are working and the rate is maxed out.
28. What does graph B demonstrate about the rate of photosynthesis? The rate has an optimal temperature range. Too far below or above that optimal range the enzymes cease to function.
29. Taken together, these graphs demonstrate what about the rate of Photosynthesis? Environmental conditions can have major impacts on the rate of photosynthesis.
30. Write the full, correct equation for photosynthesis. 6 CO2 + 6 H2O --sunlight→ C6H12O6 + 6 O2
Created by: torredia1
 

 



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