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PCAT Biology Autotrophic Nutrition
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PCAT Biology Autotrophic Nutrition
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25 Questions

1. Contain xylem and phloem bring water to the leaf from the roots (xylem) and carry manufactured food out of the leaf (phloem)

2. Fluid matrix of the chloroplast

3. Convert solar energy into chemical energy in the form of ATP (by photophosphorylation) and NADPH and must take place in light

4. Escape of high-energy electrons from chlorophyll molecules

5. 6CO2+ 12 H2O + light energy -> C6H12O6 + 6O2 +6H2O

6. Specialized organs that are the principal sites of photosynthesis

7. Bacteria form carbohydrates by Use of chemical energy rather than by using the radiant energy of the sun

8. Metabolic process where solar energy is trapped - converted to chemical energy - and then subsequently stored in the bonds of plant organic nutrient molecules and takes place in chloroplasts

9. Regulate the size of stomata opening - which open during the day to admit CO2 for photosynthesis and close them at night to limit loss of water

10. Reduce transpiration and conserve wtaer

11. Thylakoid stacks

12. Stomata open into air spaces that contact an internal moist surface of loosely packed songy layer cells.

13. Key pathway of light reactions and involves reactions of oth photosystems

14. The light capturing unit of the thylakoid membrane which is composed of a number of chlorophyll molecules

15. Surround each of the stomata on the lower surface of the leaves

16. Incorporate CO2 into organi molecules in a process called carbon fixation

17. CO2 is the source of carbon for carbohydrate production -product is three-carbon sugar phosphoglyceraledhyde (PGAL) -Similar to Krebs cycle in reverse

18. Chlorphyll a molecule is called P700 because it absorbed best at 700nm

19. Use ATP and NADPH produced by the light reactions to reduce CO2 to carbohydrates - primarily glucose (only occur during the day when the light reactions are replenishing the supply of ATP and NADPH -aka carbon-fixation or reduction synthesis reaction

20. Any organism that manufactures its own organic molecules (glucose - amino acids - and fats) from inorganic materials (CO2 - H2O - and mineral salts).

21. One of the early e- carriers in the cyclic photophosporlylation

22. Speicalized epidermal cells with thin-walled rot haris are found in the root and provide an increased surface for absorption of wtaer and minerals by diffusion and active transport

23. Layer of elongated - chloroplast-containing cells spread over a large surface area. they are directly under the upper epidermis and are well expoed to light

24. 1) carbon dioxide is fed into the cycle; in the Krebs cycle it was produce and released 2) reducing power is used during the cycle (NADPH); in the Krebs cycle NADH was removed 3) energy is used in the cycle (conversion of ATP to ADP); in the Krebs cy

25. Openings in the lower epidermis of a leaf that permit diffusion of CO2 - H2o - and oxygen

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