Chapter 8 Section 3 Notes
The Reactions of Photosynthesis
Name: ___________________________________ Date: _______________
Period: _____
Objectives:
 Describe the structure and function of a chloroplast.
 Describe what happens in the light-dependent reactions.
 Explain what the Calvin Cycle is.
 Identify factors that affect the rate at which photosynthesis occurs.
Inside a Chloroplast:
 Inside a Chloroplast
 In plants, ________________________ takes place inside chloroplasts.
 Chloroplasts contain _____________________—saclike photosynthetic
membranes.
 The reactions of photosynthesis include: the light-___________________
reactions and the light-____________________ reactions, or _______________
cycle.
 The light-dependent reactions take place within the ____________________
_______________________.
 The Calvin cycle takes place in the _______________, which is the region
________________________ the thylakoid membranes.
Electron Carriers:
 Electron Carriers
 When electrons in chlorophyll absorb _________________________, the
electrons gain a great deal of ___________________.
 Cells use ___________________ ___________________ to transport these
high-energy _____________________ from chlorophyll to other molecules.
 These high-energy electrons are used to help build a variety of molecules the
cell needs, including _______________________ like ___________________.
 One of these carrier molecules is a compound known as __________________ (nicotinamide
adenine dinucleotide phosphate).
 NADP+ accepts and holds _____ high-energy electrons along with a ________________ ion (H+).
 This converts NADP + into ________________.
 NADPH can then ______________ high-energy electrons produced by light absorption in
chlorophyll to chemical reactions elsewhere in the cell.
Light-Dependent Reactions:
The light-dependent reactions produce _______________ gas and convert ADP and NADP+ into
the energy carriers __________ and __________________.
The Calvin Cycle:
The Calvin Cycle uses ATP and NADPH from the ______________-_________________ reactions
to produce high-energy __________________.
Factors Affecting Photosynthesis:
 Many factors affect the rate of photosynthesis, including:
 ___________
 ________________________
 ____________________________________