Biology
NAME: __________________________________________________
Unit 3- Cell Structure & Function
PERIOD: _____________ DATE: ___________________________
Photosynthesis WebQuest
Part 1: Leaf Anatomy
 Go to http://www.biomanbio.com/GamesandLabs/PhotoRespgames/photointeractive.html
 Click on “Start a New Game!” then “Tap/Click Here”
 Double click on “Leaf Anatomy.”
 Use the arrow buttons on your keyboard to pilot your ship to the site of photosynthesis.
Follow the prompts and answer the following:
1. In which type of cells of a plant does photosynthesis primarily occur? ___________________________
___________________________________________________________________________________________________________
2. In which organelle does photosynthesis occur? _____________________________________________________
3. The light-dependent reactions occur in green disks called _________________________________________
and the Calvin Cycle (AKA light-independent reactions) occur in the chloroplast’s fluid space
called the _________________________________________.
 Return to the Main Menu.
Part 2: Light-Dependent Reactions
 Double click on “Light Dependent Reactions.”
Note: This is a complex topic. There is a “back” & “replay” button if you need to go back to
understand the concepts.
Follow the prompts and answer the following:
1. Place the following structures into the correct order in which they appear, from left to right:
Photosystem I
Photosystem II
ATP Synthase
1) ________________________________ 2) ________________________________ 3) ________________________________
2. When light hits Photosystem II, electrons _______________________________ energy.
3. After Photosystem II, the electrons move to the __________________________________________________.
4. Hydrogen ions and oxygen are created when _______________________________ is split.
5. “As electrons travel down the chain, their energy is used to pump _______________________________
across the membrane into the thylakoid space.”
6. Through which protein do the hydrogen ions move using diffusion? _____________________________
___________________________________________________________________________________________________________
7. What molecule does this movement create? _________________________________________________________
8. After the electrons pass through the first Electron Transport Chain, they move to ______________
___________________________________________ and then the ________________________________________________.
9. Electrons help NADP+ become _______________________________.
10. The reason for the light-dependent reactions is to create _____________________________________ and
_____________________________________, which will then be used in the Calvin Cycle.
 Now it’s your turn! Drag and drop the structures on the screen to make the light-dependent
reactions happen. (Use the questions you answered above to guide you through the process.)
 Do the process twice to make a complete oxygen molecule.
11. Which byproduct does water make in the light-dependent reactions? (Hint: we need it to
breathe!) ____________________________
Part 3: Interactive Photosynthesis Lab
 Go to
http://www.glencoe.com/sites/common_assets/science/virtual_labs/LS12/LS12.html
 Read the information on the left and answer the following questions.
1. Plants use the food they make for what? _____________________________________________________________
2. All the colors of the rainbow combine to make what color light? __________________________________
 Follow the procedure in order to carry out an experiment to measure plant growth under
different colors of light.
FOLLOW ALL DIRECTIONS & DO NOT SKIP ANY STEPS
3. Once you have completed the lab, print enough copies of the Journal, Table, and Graph that
you have created so that each group member has a copy.
4. Staple the journal, Table, and Graph to your Photosynthesis WebQuest and turn it in.