Chapter 10.2 Flashcards
What are the major sites of photosynthesis in most plants?
Leaves
Chloroplast
The eukaryotic organelle that absorbs energy from sunlight and uses it to drive the synthesis of organic compounds from carbon dioxide and water.
Mesophyll
The tissue in the interior of the leaf.
Where is chlorophyll mainly found?
Cells of the mesophyll.
Stomata
Microscopic pores where CO2 enters and O2 exits.
Stroma
A dense fluid in the chloroplast.
*Surrounded by a double membrane.
Thylakoid
Membrane-bound sacs.
Grana/Granum
Columns of stacked thylakoid sacs.
Chlorophyll
The green pigment that gives leaves their color.
Where is chlorophyll found in the chloroplast?
Thylakoid membranes.
Why is photosynthesis a redox process?
- CO2 is reduced to C6H12O6.
- Water is oxidized to O2.
Is photosynthesis an endergonic or exergonic process, and why?
Endergonic; The energy boost is provided by light.
What are the two stages of photosynthesis?
- Light reactions
- Calvin cycle
Where do Light Reactions take place?
Thylakoid
What happens in Light Reactions?
Converts solar energy to chemical energy.
* H2O is split
* O2 is released
* NADP+ is reduced to NADPH (where H is from water)
* ATP is synthesized from ADP + Pi, via phosphorylation
