Term
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Definition
| Site of photosynthesis; primarily in cells of mesophyll |
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Term
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Definition
| transforms light energy trapped by chloroplasts into chemical bond energy and stores it in sugar and other organic molecules |
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Term
| Photosynthesis properties |
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Definition
> Makes energy-rich organic molecules
> Uses CO2 as carbon source and sunlight-energy as energy source
> directly/indirectly supplies energy to most living organisms
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Term
Photosynthesis
vs
Cellular Respiration |
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Definition
> Photosynthesis is the opposite of cellular respiration
> Photosynthesis - glucose are made through process that requires energy from the sun
> Cellular Respiration - energy obtained from glucose
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Term
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Definition
Green pigment that gives a leaf its color. It is also responsible for the absorption of the light energy that drives photosynthesis
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Term
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Definition
| CO2 and H2O enter the leaf through pores called ... |
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Term
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Definition
| water absorbed by roots and transported to leaves through these ... |
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Term
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Definition
| Chloroplasts contain these |
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Term
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Definition
| Flattened membranous sacs inside chloroplast; membrane contains chlorophyll |
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Term
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Definition
| Thylakoids arranged into stacks |
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Term
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Definition
| Where the Light-DEPENDENT reactions occur |
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Term
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Definition
| Consists of 2 different reactions: light-dependent and light-INdependent |
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Term
| Photosynthesis reactions' locations |
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Definition
| different regions of chloroplast |
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Term
| Light-Dependent Reactions |
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Definition
> Sunlight => chemical energy stored in energy carriers called ATP and NADPH
> Oxygen released as by-product
> Occurs in thylakoid membranes |
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Term
| Light-independent reactions |
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Definition
> chemical energy in ATP and NADPH used to make glucose and other stuff
> Take place in stroma |
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Term
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Definition
| fluid-filled space outside thylakoids in chloroplast |
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Term
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Definition
> electromagnetic energy
> Wavelike AND particle-like properties |
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Term
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Definition
> short wavelength = high energy, etc.
> Purple = highest energy |
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Term
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Definition
| discrete particles called photons |
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Term
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Definition
| Substances that absorb visible light (Chlorophyll) |
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Term
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Definition
assemblies that turn light energy into chemical energy in thylakoid membranes;
2 TYPES : PSI and PSII |
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Term
| Components of photosystem |
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Definition
| Chlorophyll, proteins, accessory pigments |
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Term
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Definition
1. Light harvesting complex
2. Reaction-center chlorophyll
3. Electron transport system |
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Term
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Definition
| Light absorbed by PSII; Energized electrons leave reaction center; enter electron transport chain; move along chain, and energy used for ATP; light absorbed by PSI; .... ; energy made into NADPH; initial electrons from PSII replaced by splitting of water |
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Term
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Definition
coupling of electron flow down ECT to ATP production by creation of gradient across membrane.
Drives ATP synthesis
PSII = ATP
PSI = NADPH |
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Term
| Light-Independent Reaction |
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Definition
| Chemical energy stored from light-dependent reaction used to make glucose |
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Term
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Definition
| cycle of reactions in photosynthesis where CO2 (atmospheric carbon) is "fixed" using ATP and NADPH |
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Term
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Definition
> Occurs in chloroplast stroma
> No direct light energy required
> NADPH and ATP provide energy |
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Term
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Definition
| 1. Carbon Fixation 2. G3P synthesis 3. Regeneration of Ribulose Biphosphate; make 3 5-C sugars from 5 3-C sugars |
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Term
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Definition
| acquiring C from atmosphere and incorporating it into larger organic molecule. RuBP => PGA |
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Term
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Definition
PGA => G3P
Energy from NADPH and ATP used |
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Term
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Definition
| 2 G3P molecules made into glucose. Remaining G3P => back to RuBP; requires ATP energy |
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Term
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Definition
| process by which ATP is generated (PSII) |
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