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:
___________
________________________
____________________________________
0
