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Test your basic knowledge |
PCAT Biology Autotrophic Nutrition
Start Test
Study First
Subjects
:
pcat
,
biology
Instructions:
Answer 28 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Fluid matrix of the chloroplast
Photosystem
Photosystem I
Leaves
Stroma
2. Excited e- of P700 move along a chain of electron carriers -reactions are harnessed to produce ATp from ADP and Pi in a process called cyclic photophosphorylation
Cyclic Electron Flow
Photosystem I
Light reactions
Dark Reactions
3. Convert solar energy into chemical energy in the form of ATP (by photophosphorylation) and NADPH and must take place in light
Stroma
Calvin Cycle
Light reactions
Photosystem II
4. Openings in the lower epidermis of a leaf that permit diffusion of CO2 - H2o - and oxygen
Dark REactions
Stomata
Waxy Cuticle
Photoionization
5. 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
Grana
Spongy Layer
Stomata
Photosynthesis
6. Thylakoid stacks
Grana
Calvin Cycle Steps
Guard Cells
Photosystem
7. 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
Veins in leaves
Chloroplast
Dark Reactions
Palisade
8. Bacteria form carbohydrates by Use of chemical energy rather than by using the radiant energy of the sun
Chemosynthesis
Photosystem II
Guard
Stomata
9. Key pathway of light reactions and involves reactions of oth photosystems
Noncyclic Electron Flow
Autotroph
Palisade
Leaves
10. Highly organized plastid containing the chlorophyll pigment that is bounded by two membranes and contains a netowrk of membranes called thylakoid membranes
Dark Reactions
Stomata
Chloroplast
Dark REactions
11. 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
Stroma
Guard Cells
Root
Guard
12. 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
Guard Cells
Spongy Layer
Leaves
Dark REactions
13. Escape of high-energy electrons from chlorophyll molecules
Guard
Ferrodixin
Photoionization
Autotroph
14. Contain xylem and phloem bring water to the leaf from the roots (xylem) and carry manufactured food out of the leaf (phloem)
Stroma
Dark REactions
Chloroplast
Veins in leaves
15. Any organism that manufactures its own organic molecules (glucose - amino acids - and fats) from inorganic materials (CO2 - H2O - and mineral salts).
Autotroph
Photoionization
Photosystem II
Palisade
16. The light capturing unit of the thylakoid membrane which is composed of a number of chlorophyll molecules
Stroma
Grana
Photosystem
Ferrodixin
17. One of the early e- carriers in the cyclic photophosporlylation
Ferrodixin
Light reactions
Palisade
Chloroplast
18. Surround each of the stomata on the lower surface of the leaves
Dark REactions
Guard
Grana
Stroma
19. Special chlorophyll molecule is P680 because it absorbs best at 680 nm
Photosystem II
Guard Cells
Photoionization
Noncyclic Electron Flow
20. Specialized organs that are the principal sites of photosynthesis
Spongy Layer
Ferrodixin
Chemosynthesis
Leaves
21. 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
Veins in leaves
Photosystem
Palisade
Chemosynthesis
22. Stomata open into air spaces that contact an internal moist surface of loosely packed songy layer cells.
Spongy Layer
Photoionization
Veins in leaves
Stomata
23. 6CO2+ 12 H2O + light energy -> C6H12O6 + 6O2 +6H2O
Veins in leaves
Photoionization
Palisade
Net Reaction for Photosynthesis
24. Incorporate CO2 into organi molecules in a process called carbon fixation
Dark REactions
Leaves
Net Reaction for Photosynthesis
Guard
25. 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
Photosystem
Waxy Cuticle
Calvin Cycle Steps
Chemosynthesis
26. Chlorphyll a molecule is called P700 because it absorbed best at 700nm
Photosystem II
Photosystem I
Noncyclic Electron Flow
Calvin Cycle
27. CO2 is the source of carbon for carbohydrate production -product is three-carbon sugar phosphoglyceraledhyde (PGAL) -Similar to Krebs cycle in reverse
Chloroplast
Stomata
Calvin Cycle
Chemosynthesis
28. Reduce transpiration and conserve wtaer
Dark Reactions
Waxy Cuticle
Palisade
Leaves