Unit 4 Cells
PPT #2 Cellular Energy Production
Name:_________________________
Thacker Biology
Q: How do Cells, and therefor organisms make the energy they need to thrive?
It depends upon if you can use the sun or not  What organisms use the sun as an energy source?_________________
____________-do these plants actually use the sun as a nutrient source?__________________________. ________
The Sun powers only the first step!
Cell Energy
---All nutrients that are used by cells must be broken down into their monomers. _________________is the monomer
of Carbohydrates. Breakdown of nutrients to glucose is done by ______________________.
Plants
Make glucose through ______________
Animals
Get glucose from food sources
Both organisms take this glucose and get ENERGY
From it through __________________________
Which produces ________________
Photosynthesis __________________________________________________________________
Where does this happen in a plant cell?_______________________________
What happens?_____________________________________________________________________________________
When does this happen? _____________________________________________________________________________
This is the ONLY organism that can make _________________________ (C6H12O6) from
_______________________________________(CO2 and H2O)
This begins ALL ___________________________ which support all life above it.
This also results in the production of __________________________.
This is an _____________________________Process only!!! Plants and plant-like organisms like some bacteria and
algae can perform photosynthesis. These organisms store the glucose (C6H12O6) as ___________________________
(starch) in their leaves and bodies.
Total Photosynthesis Chemical Reaction Equation=
_________________________________________________________________________
___________________________________________________________________________
However, the above reaction actually happens in two distinctly different steps.
These 2 steps happen within the _____________________________.
STEP 1: Light Reaction, Light Dependent Reactions ( Water splitting in thylakoids)
Happens in the ______________________________________________
Thylakoids are flattened sacks that have _______________________(a pigment that captures light energy wavelengths)
Write RNX: ______________________________________________________________________________
1. Light is absorbed by ________________________________________________________
2. Light Energy ________________________________________________________________
3. Oxygen is “leftover” and diffuses out of the leaf through the ______________________________________________
4. A tiny bit of _______________________is created from splitting the water.
This ATP Energy molecule is used in the 2nd step (dark Rnx) to make _____________________________.
Step 2: Dark Reactions; Light Independent Reactions, Calvin Cycle (making glucose)
Happens in the _______________________ of the chloroplasts (the cellular spaces between thylakoids)
Write RNX: _______________________________________________________________________________
1. A tiny bit of energy (____________) from splitting water is used to Split CO2 and combine with the H2, to create
________________________ in the stroma.
Did the combine process of photosynthesis Create any ENERGY?___________________________
What was created?________________________________________________.
Summary of the 2 reactions of Photosynthesis:
Highlight reactants in yellow, Highlight products in
another color.
1. ________________________________________________________________________________________________
__________________________________________________________________________________________________
RNX:
______________________________________________________________________________________________
2. ________________________________________________________________________________________________
__________________________________________________________________________________________________
RNX:
_________________________________________________________________________________________________
Oxygen is released through the stoma in what reaction?_________________________
Glucose is made in what reaction?_________________________________________
CO2 is split in the ___________________reaction using the energy created in the _____________________reaction.
What combines with CO2 in the ______________________reaction to make glucose?____________________
If you put a plant in the dark, what process will NOT occur?____________________________________________
In the dark for a certain time what process WILL occur?_______________________________________________
Why do plants eventually die if left in the dark?_________________________________________________________
Would our world be the same if the chemistry of photosynthesis were interrupted or destroyed?___________________
What are some things that could destroy the photosynthesis process?_________________________________________
_________________________________________________________________________________________________
__________________________________________________________________________________________________
Please draw the light and dark reactions using the appropriate formulas, reactants and products to show your
understanding of the steps of photosynthesis. Again highlight reactants a different color from products.
Photosynthesis concept map:
Overall Photosynthesis Reaction equation:
__________________________________________________________________________________________________
1. Light Reaction equation:___________________________________________________________________________
Summary: ________________________________________________________________________________________
_________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
2. Dark Reaction equation: __________________________________________________________________________
Summary: ______________________________________________________________________________________
_______________________________________________________________________________________________
_______________________________________________________________________________________________
_______________________________________________________________________________________________
________________________________________________________________________________________________
_______________________________________________________________________________________________