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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Photoautotroph |
Autotrophs that rely on photosynthesis for both energy and carbon compounds |
How they create their food and energy. |
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Chemoautotrophs |
Autotrophs that obtain energy by oxidizing inorganic substances such as iron, sulfur, etc. |
Creating energy from not the sun |
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Photosynthesis |
Absorption of light energy; conversion of energy into chemical energy; storage of chemical energy into sugars |
Processing all the energy |
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Chlorophyll |
Green pigment in thylakoids that photosynthesis depends on |
What makes plants appear green |
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Light Reactions |
Pigment molecules in the thylakoids absorb light and convert it into chemical energy |
Taking in the light and converting it |
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Calvin Cycle |
The cycle that incorporates carbon dioxide in sugars during photosynthesis; uses chemical energy previously converted from light energy |
3+ carbon sugars being used |
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Chloroplast |
Oraganized structure where the thylakoids are stacked; separates thylakoids from cytoplasm; where photosynthesis occurs |
"action site" for photosynthesis |
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C4 plants |
Plants that have two systems of carbon dioxide fixation that occur in different parts of the leaves; 4-carbon acid |
4-carbon acids |
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Thylakoids |
Light absorbing pigments that function in photosynthesis are embedded in membrane walls; form little sacs |
Embedded in the membrane; absorb color |
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Grana (granum) |
Flattened sacs in the thylakoids that increase amount of surface area chloroplast can hold; form stacks |
The pancake stacks in the thylakoids. |
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Stroma |
Area surrounding the thylakoids; enzymes catalyze here and form sugar from carbon dioxide and water |
Surrounds the pancakes stacks |
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Saturation Point |
Point in photosynthesis where light no longer increases the rate of photosynthesis |
Breaking point of light absorption |
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Stomates |
Openings in leaf tissues on the surface of the leaf that allow gases to move into and out of the tissue |
Stomates are like the pores on your face, except on a leaf |
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Photoinhibition |
Damage to the light gathering process in photosynthesis; occurs when a chloroplast has absorbed too much light energy |
When chloroplast absorbs too much, this is the result. |
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Photorespiration |
A metabolic pathway in plants that consumes oxygen, produces carbon dioxide, generates no ATP and reduces photsynthesis |
Seemingly the opposite of photosynthesis |
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Aerobic Cell Respiration |
Respiration that requires oxygen |
Respiration in need of another compound |
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PGAL |
Two enzymatic steps reduce each molecule of PGA to the 3-carbon sugar phosphate, phosphoglyceraldehyde; these become rearranged, eventually producing a 5-carbon sugar-phosphate |
i dont really know |
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NADPH |
When electrons, along with protons from water, combine with NADP+, it is reduced to NADPH; provides protons and electrons needed to reduce carbon dioxide in the Calvin cycle |
needed to reduce carbon dioxide; provides + and - |
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Rubisco |
Enzyme that catalyzes the reaction that incorporates carbon dioxide into the Calvin cycle |
Brings carbon dioxide |
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Limiting factors |
The factors in shortest supply have the most effect on the rate of photosynthesis |
LESS IS MORE |
