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27 Cards in this Set
- Front
- Back
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how does your body get energy? |
eating |
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autotroph |
organism that makes their own food |
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heterotroph |
organism that cannot make its own food (ex: humans) |
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ATP stands for |
adenosine triphosphate |
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ATP molecule is one big molecule made of 5 smaller molecules. these molecules are |
adenine, ribose, and 3 phosphate groups |
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when one phosphate group breaks off from the 3 phosphate groups, what’s created? |
ADP |
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what happens when ATP breaks apart, and energy is released |
an ADP molecule is formed |
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ADP then uses energy and gains an extra phosphate group (by eating). when this happens, what molecule is formed? |
ATP |
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producers |
make energy for themselves |
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consumers |
eat other things such as producers or other consumers |
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what’s the number one source of energy? |
the sun |
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photosynthesis |
when a plant combines with the energy from sunlight with water and carbon dioxide from the water. |
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photosynthesis reaction: |
CO2 (carbon dioxide) + H2O (water) > C6H12O6 (glucose) + O2 (oxygen) |
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stomata |
small openings in the leaves of plants that allows carbon dioxide to enter. |
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photosynthesis takes place in the: |
chloroplasts. and the chlorophyll absorbs the energy from the sun. |
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chlorophyll is a ..? |
pigment. a pigment is a light absorbing and transmitting molecule. |
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chlorophyll is a ..? |
pigment. a pigment is a light absorbing and transmitting molecule. |
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chlorophyll absorbs? reflects? |
absorbs violet, red and blue light. reflects and transmits green light. |
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the chloroplast is surrounded by |
2 membranes |
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thylakoids (in chloroplasts) |
disk-shaped structures in the chloroplasts that contain the pigments |
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stroma (in chloroplasts) |
gel-like substance surrounding the thylakoids |
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stroma (in chloroplasts) |
gel-like substance surrounding the thylakoids |
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grana (in chloroplasts) |
the stacks of thylakoids |
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light dependent reactions- |
occur in the thylakoids require sunlight and water produces ATP, NADPH, & oxygen the “photo” part of photosynthesis purpose: to take sunlight and turn it into chemical energy (ATP) needs chlorophyll 2 steps- photosystem 1 & photosystem 2 |
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photosystem 2 (first step) |
pigment absorb light and transfer it into electrons, which renter the electron transport chain. electron transport chain is a series of molecules that accept/donate electrons easily. at the same time, water is broken down releasing oxygen as a waste. |
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photosystem 1 (second step) |
electrons here are added to the NADPH to form NADPH |
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light independent reactions (dark) |
occur in the stroma require ATP, NADPH, CO2 produces glucose also known as calvin cycle the “synthesis” part of photosynthesis |
