Chemical Energy, ATP, and Photosynthesis
Name: ______________________________
Chapter 4: Sections 1, 2, and 3 (classzone.com 2008 edition)
How do living things get ATP?

ATP is the _________________________________________________________.

ATP stands for ________________________________________.
 Living things get ATP from breaking down _________________________________________.
(carbohydrates & lipids)
4.2 & 4.3 Photosynthesis
 The process of photosynthesis
_______________________________________________________________________________
_____________.
 This process happens in organisms called __________________ or _________________. (Need to
make their own food)
 This process takes place in an organelle called the _________________.
 The chloroplast has a green pigment in it called ____________________ that is responsible for
capturing the light energy.
So How Does Photosynthesis Work?
The first stage of photosynthesis is called the ___________________________________.
Purpose: To capture and transfer energy.
 First, light is captured by the ____________________ in the ___________________.
 Thylakoid:________________________________________________________________.
 Grana: Stacks of thylakoids
 Second, the ___________________________ along the thylakoid membrane and
_______________________________________. ________________ molecules get released at this
point.
 Third, energy is then transferred to _____________ to be used for the second stage of
photosynthesis.
The second stage of photosynthesis is called the ___________________________ /
____________________________ / ________________________.
Purpose: Use energy from the first stage to fix carbon from CO2 into glucose (sugars).
 This process takes place in the ______________.
 Stroma: The fluid outside of the thylakoids.
 First, ___________________________ is added from the atmosphere to help in the chemical
reactions.
 Second, a molecule of a _______________________ (glucose) is formed. This molecule stores some
of the energy captured from the sun.
The Chemical Formula for Photosynthesis
 6CO2 + 6H2O + light
___________________________
( _____________________ )
C6H12O6 + 6O2
_______________________________
( __________________________ )
What energy transformations are taking place in photosynthesis?
_______________(light)___________________
Chemosynthesis
 Some organisms still make their own food, but they
___________________________________________________.
 ___________________________ is the process of using chemical energy to make carbon based
molecules.
 This is because they are found in areas (ex: deep in the ocean)
_______________________________________________________________________________