ATP & Photosynthesis Lets....sing Today in class: 1. Finish worksheets on ATP, chloroplast, and mitochondria (finish as homework) 2. Started a more in depth look at the process of photosynthesis (slides 1-14) Homework Assignment: 1. Draw & label or write out step by step what happens on slide 1, A-F.
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ATP & Photosynthesis - Chandler Unified School · PDF fileATP & Photosynthesis ... Homework Assignment: 1. Draw & label or write out step by step what ... • Process....
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As H+ builds inside thylakoid, a gradient builds. H+ ions
move down concentration gradient
We have created an
extra phosphate bond
(stored energy)
ATP is the second
energy storing molecule
made.
Let’s Review • The light reactions convert energy from the sun
to chemical energy
• Light is absorbed by (green structures) chlorophyll.
• Electrons become excited and move like hot potatoes through the electron transport chain.
• At the end of the ETC an energy storing molecule called NADPH is made
• At the same time a concentration of H+ build up in the thylakoid space. This concentration gradient gives energy to the membrane proteins which catalyze the reaction of ADP to ATP
• Electrons are replaced when the water is split into O2 and H+
Now what?
• Why did we “capture” energy from the sun
& make some ATP & NADPH……
• So it can be used in the Dark Reaction
(aka Calvin Cycle) to make SUGAR!!!!
Dark Reactions
Where do the dark
reactions occur?
Stroma
• Uses energy from the light reactions to
change CO2 from the atmosphere into the
sugar glucose
• Energy needed comes from the ATP and
NADPH (made in light reactions)
Dark Reaction/Calvin Cycle
4. Other five
molecules recycle
1. A carbon in the form of CO2 is attached to a 5C compound to form a 6C compound