Photosynthesis - Light-Dependent Reactions & Calvin Cycle (Light-Independent Reactions)
Terms in this set (41)
Glucose (sugar) and Oxygen
Products of photosynthesis
Carbon Dioxide (CO2) and Water (H2O)
Reactants of photosynthesis
Step 1 of Photosynthesis (Light-Dependent Stage)
Chlorophyll located in thylakoid membrane ABSORBS energy from sunlight
Step 2 of Photosynthesis (Light-Dependent Stage)
Enzymes break down water (H2O) molecules & oxygen (O2) is released as a waste product
Step 3 of Photosynthesis (Light-Dependent Stage)
Hydrogen ions are pumped from outside to inside the thylakoid AGAINST a concentration gradient
Oxygen, NADPH & ATP
Products of Light-Dependent Reactions
Byproduct of water splitting
Use energy from first stage to make sugars
The second stage of Photosynthesis is designed to ________________?
NADPH and ATP
The two high energy molecules used to complete a series of reactions in stage two (electron transport) of Photosynthesis
Stacked coin-like structures where Light-dependent reactions take place (water splitting and electron transport chain)
Pigment that absorbs light energy in a chloroplast
Organelle where photosynthesis takes place
Cytoplasm in chloroplast where Calvin cycle (Light-independent reactions) takes place
The second stage of Photosynthesis which is a considered a series of Light-independent reactions where energy is transferred from the photosystems to build sugar molecules from carbon dioxide (CO2)
Step 1 of Calvin cycle
CO2 molecules are added to 5-carbon molecules to form 6-carbon molecule
Step 2 of Calvin cycle
Energy added to split 6-carbon molecule forming 3-carbon molecules & then rearranged
Step 3 of Calvin cycle
The highest energy 3-carbon molecule leaves cycle, most others stay in cycle until but when the second high energy 3-carbon molecule leaves a 6-carbon molecule of sugar is formed
Photosynthetic organisms are considered ________________because they are main source of energy for most organisms on Earth
Captures and transfers energy
The first stage of Photosynthesis is designed to ________________?
Photosystem II & I
Light-dependent reactions are part of which photosystem?
Photosystem II of photosynthesis requires what molecule to function?
Step 4 of Photosynthesis (Light-Dependent Stage)
Energized electrons enter Photosystem I
Step 5 of Photosynthesis (Light-Dependent Stage)
The high energy molecule, NADPH, is formed which functions like ATP and move on to the Light-independent reaction
Step 6 of Photosynthesis (Light-Dependent Stage)
Hydrogen ions (H+) flow through the complex enzyme channel called, ATP Synthase
Step 7 of Photosynthesis (Light-Dependent Stage)
ADP is changed into ATP when the H+ ions flow through the ATP Synthase channel
Step 4 of Calvin cycle
Energy from ATP is used to change the remaining 3-carbon molecules back into 5-carbon molecules then added to CO2 and re-enter the cycle
Sugar, NADP+ and ADP
Products of the Calvin cycle (Light-independent reaction)
The process that uses energy captured from sunlight to change CO2 and H2O into O2 and Sugars
The 1st stage of Photosynthesis
Five-carbon molecules, which start the cycle, are regenerated
Why are the light-independent reactions called a cycle (Calvin cycle)?
Photosynthesis is a two-part process. What is the "photo" part of the process?
To capture energy from sunlight and transfer it to energy-carrying molecules
What is the function of the light-dependent reactions?
A group of molecules that absorb energy from sunlight
What is a photosystem?
Within and across the thylakoid membranes of the chloroplast
Where do the light-dependent reactions take place?
Chlorophyll absorbs some of the energy from visible light
What is the role of chlorophyll in photosynthesis?
In the stroma of the chloroplast
Where do the light-independent reactions take place?
Carbon dioxide (CO2)
What reactant is needed in the light-independent reactions?
What reactant is needed in the light-dependent reactions?
Which molecule is made during the light-dependent reactions?
Glucose (sugar) (C6H12O6)
Which molecule is made during the light-independent reactions?
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