1. Modeling the Light Reaction
Day 3 Unit 3
Modeling the Light Reaction

2. Warm Up: Sit in groups of 3, with people who you have not worked with in a long while
Which of the following statements is (are) correct about oxidation-reduction reaction?
The molecule that is reduced gains electrons
The molecule that is oxidized loses electrons
The molecule that is reduced loses electrons
The molecule that is oxidized gains electrons
Both A and B are correct
What is the primary function of the light reactions of photosynthesis?
To produce energy-rich glucose from carbon dioxide and water
To produce ATP and NADPH
To produce NADPH used in respiration
To use ATP to make glucose
A plant has a unique photosynthetic pigment. The leaves of this plant appear to be reddish yellow. What wavelengths of visible light are not being absorbed by this pigment?
red and yellow
Blue and violet
Green and yellow
Blue, green and red
Green, blue and violet
1.E
2.B
3.A

3. Agenda
Modeling the Light Reaction Homework: Photosynthesis Packet

4. Unit Three LTs
I can describe why all living systems require a constant input of free energy and matter I can explain how photosynthesis provides living things with matter and free energy I can explain how cellular respiration provides living things with a useable source of free energy I can explain why living things must exchange matter with the environment, and describe how these exchanges take place* *: Winter break LT. . .

5. video
Photosynthesis

6. Pigments form aggregates on the thylakoid membrane called photosystems
Pigments form aggregates on the thylakoid membrane called photosystems. The purpose of these photosystems is to collect energy over a "broad" range of wavelengths and concentrate it to one molecule called a reaction center which uses the energy to pass one of its electrons on to a series of enzymes.
This aggregate of different proteins is called an antennae complex.

7. Life processes are not spontaneous
Life processes are not spontaneous. Life needs a constant input of free energy in order to maintain those processes. Life harnesses energy released in spontaneous processes to make non-spontaneous processes happen

8. Modeling Step 1: Read Handout Step 2: Collect materials, divide labor
Step 3: Assemble model
Step 4: Use the model to demonstrate the events of the photosynthetic light reactions
Resources: videos, pictures of the ETC, list of steps of light reactions, textbook (Chapter 10), notes from last class
Step 5: Get assessed by Ms. Crock

9. Photosystem NADP Reductase Cytochrome Complex ATP Synthase
Plastiquineone Qb
NADP Reductase
Plastocyanin
ATP
Synthase
Cytochrome
Complex
Ferrodoxin