HOW TO STUDY FOR CHAPTER 4.1-4.3 PHOTOSYNTHESIS BIG QUIZ....
study from pages _____ to ______in binder
At home:
1. Read and study ALL of your notes….your 4.1 and 4.2Power Notes, your 4.3 Class Cornell Notes, your 4.3 Power Notes
2. Re-read your Video Notes
3. Study and KNOW the 7 steps of the light dependent reactions (stage 1) and the 4 steps of the light independent reactions (stage 2 = Calvin Cycle)….you drew these on your Photosynthesis Diagramming…use your finger to trace the sunlight and electrons from step to step…you have to put these is sequential order on the BIG QUIZ
4. Look at your Photosynthetic Energy graphs (with the line and bar graph)
5. Fill in this ENTIRE review sheet……hint hint
6. Go to www.classzone.com and under the Purple Assessment tab, practice with the material by taking the section quizzes (hint hint); also go to the Interactive Review Green tab and practice there too!
Chapter 4.1-4.3 = ATP and Photosynthesis
From 4.1 Power Notes
1. What do the letters ATP mean? What is ATP a synonym for? Adenosine Triphosphate; energy
2. What happens when a phosphate is removed from ATP? What molecule does it now become? Energy is released; It is now ADP then a P is added back to make ATP
From 4.2 Power Notes…this is the BIG picture of what goes into and out of the chloroplast…..
3. What is the photosynthesis equation?
6 H2O + 6 CO2 ® 6O2 + C6H12O6 in sunlight
4. Looking at the picture of the chloroplast from 4.2 Power notes, what are the reactants of photosynthesis?
6 H2O + 6 CO2
5. Looking at the picture of the chloroplast from 4.2 Power notes, what are the products of photosynthesis?
6O2 + C6H12O6
From 4.3 Class Cornell Notes-Remember photosynthesis occurs inside plants only inside plant cells inside the chloroplast
6. What is a pigment? Molecules that absorb a certain wavelength of light
7. Name the 4 colors of the pigments that come from chlorophyll:
a. Chlorophyll a = ______blue green ______pigment
b. Xanthophyll = ______yellow______pigment
c. Carotene = ______orange______pigment
8. Plants absorb mostly ____red_____ and __blue______light and reflect mostly ______green___ light. Your bars are highest on the bar graph that you completed in class because that is the light % that is absorbed.
9. What is the stomata? The openings on the under side of a leaf that allow for oxygen and carbon dioxide to come into and out of the plant cell….like the plant cell’s mouth
10. What is a photosystem? How many photosystems does a thylakoid have? Molecule that contains chlorophyll that absorb light; there are 2 of them and light actually strikes Photosystem II first, then strikes Photosystem I
11. Stage 1 of photosynthesis is called the ______light dependent______reactions
12. Stage 2 of photosynthesis is called the ______light independent______reactions
13. Stage 1 occurs in the ______thylakoid______of the chloroplast
14. Stage 2 occurs in the ______stroma______of the chloroplast
15. Stage 1 has 7 steps: LIGHT DEPENDENT REACTIONS
a. Step 1 = Light strikes Photosystem II which has chlorophyll and is in the ______thylakoid______. Electrons get ______excited______and cause reactions to occur and the electrons move into the electron transport ______chain____.
b. Step 2 = The excited electrons cause water (H2O) to split into __ H+ ions ___ and __ Oxygen____. This is where we get our ______oxygen______to breathe.
c. Step 3 = The H+ ions (that came from water splitting) now diffuse INTO the ______thylakoid______membrane.
d. Step 4 = More ______sunlight_____ strikes Photosystem I which absorbs energy which excites more electrons to have more reactions occur.
e. Step 5 = The excited electrons cause ______NADPH___ to be made (to carry energy)
f. Step 6 = The H+ ions that diffused into the thylakoid now diffuse back out through a ______protein channel_____
g. Step 7 = This causes ADP to be changed into ______ATP____ (to carry energy)
16. SO……in Stage 1, there are 3 products: oxygen (from ______water______splitting), ______ATP_____ and ____NADPH_____ to carry energy to make sugars in Stage 2
17. Stage 2 has 4 steps: LIGHT INDEPENDENT REACTIONS
a. ___ CO2______enters the Calvin Cycle (we have exhaled this)
b. It takes a lot of energy for a plant to make its own sugar so ____ATP ______and _NADPH______(that was JUST made in Stage 1) enter the cycle.
c. A six carbon sugar is make which is ______C6H12O6______(glucose)
d. Plants use the sugar as their ______energy or food______source
18. SO…in Stage 2, there is 1 product: ______C6H12O6 = sugar = carb = glucose = plant food_____. Remember Stage 2 is all about the “C’s…. CO2 enters the Calvin Cycle to make C6H12O6
19. ALSO…in words the equation is:
• 6 H2O + 6 CO2 ® 6O2 + C6H12O6 in sunlight
• Water + Carbon Dioxide YIELDS Oxygen + Glucose
(in soil) + (we exhale) YIELDS (from water + (plant food
splitting) from the C in CO2)