Study Guide Photosynthesis Unit, Biology Standard 1f

1. What process is shown in the figure to the right?

Photosynthesis

2. What structure (organelle) is shown in the figure to the right?

Chloroplast

3. Where, in the chloroplast, does the light reaction take place?

Thylakoid Membrane, B

4. Where, in the chloroplast, does the light-independent reaction take place?

Stroma, A

5. What are the 3 reactants (inputs) of photosynthesis?

1.Light 2.Water 3.CO 2

6. What are the 2 products (outputs) of photosynthesis?

6. What are the 3 products (outputs) of photosynthesis? 1.Oxygen 2.Sugars

7. What is the overall equation of photosynthesis?

8. What is another name for the Light Phase?

Light Dependent Phase Light Dependent Reaction Light Reaction

9. What are other names for the Dark Phase?

Light INDEPENDENT Phase Light INDEPENDENT Reaction Dark Reaction Calvin Cycle

10. ________________ is the major light- absorbing pigment in plant photosynthesis.

10._CHLOROPHYLL_ is the major light- absorbing pigment in plant photosynthesis.

11. ____________ (autotrophs/heterotrophs) produce the chemical energy they need for metabolism through photosynthesis.

11. _____ autotrophs _______ produce the chemical energy they need for metabolism through photosynthesis.

12. The waste product that is released during photosynthesis into the atmosphere is___________( carbon dioxide/oxygen/nitrogen)

12. The waste product that is released during photosynthesis into the atmosphere is_oxygen

13. A student put together two different experimental setups as shown to the left. What might the student be trying to test? The student is probably trying to test the effect of ____________ dioxide concentration on plants.

13. A student put together two different experimental setups as shown to the left. What might the student be trying to test? The student is probably trying to test the effect of _CARBON__ dioxide concentration on plants.

14. If the student placed the experimental setup in the shade for 2 days, what would happen to the amount of sugar produced?________________________ 14. If the student placed the experimental setup in the shade for 2 days, what would happen to the amount of sugar produced?________________________

14. If the student placed the experimental setup in the shade for 2 days, what would happen to the amount of sugar produced?_DECREASE____ 14. If the student placed the experimental setup in the shade for 2 days, what would happen to the amount of sugar produced?_DECREASE____

Fill-in the following paragraph: Biologists generally agree that the process of photosynthesis can be divided into two major reactions. These are often referred to as the light and dark reactions. During the light reaction molecules of (15)__________ are "split," producing hydrogen atoms and a gas called (16)__________. During this reaction, extra energy is stored in molecules of (17)_____________. The dark reaction requires no light because it is powered by the energy molecules made in the light reaction. A six-carbon compound known as (18)_______________ is formed during this reaction.

Fill-in the following paragraph: Biologists generally agree that the process of photosynthesis can be divided into two major reactions. These are often referred to as the light and dark reactions. During the light reaction molecules of (15)__H2O___ are "split," producing hydrogen atoms and a gas called (16)___O2____. During this reaction, extra energy is stored in molecules of (17)___ATP/NADPH____. The dark reaction requires no light because it is powered by the energy molecules made in the light reaction. A six-carbon compound known as (18)__C6H12O6____ is formed during this reaction.

19. Green plants appear green to human eyes because mainly red and blue wavelengths are ________________ (absorbed/reflected), while green is __________________ (absorbed/reflected).

19. Green plants appear green to human eyes because mainly red and blue wavelengths are ________absorbed________ while green is ______reflected_____

20. What waste product of the light dependent reaction of photosynthesis is released and does not participate further in photosynthesis? ______________ (ATP/ NADPH/ H2O/ O2)

20. What waste product of the light dependent reaction of photosynthesis is released and does not participate further in photosynthesis? O2

21. In the diagram to the right, which letter shows the part of the chloroplast where the Calvin cycle takes place? _________

21. In the diagram to the right, which letter shows the part of the chloroplast where the Calvin cycle takes place? STROMA, A

22. In this diagram of a chloroplast, which letter is pointing to the stroma? _____

22. In this diagram of a chloroplast, which letter is pointing to the stroma? _A_

23. The cells in _____________ (grass / muscles/ apples / potatoes) would have more chloroplasts than cells in the others.

23. The cells in grass would have more chloroplasts than cells in the others.

24. In addition to ATP, _______________ (water/NADPH/glucose) is used as a source of energy in the photosynthesis reaction.

24. In addition to ATP, ____NADPH____ is used as a source of energy in the photosynthesis reaction.

True or False? 25. ________Photosynthesis takes place at a faster rate in green light.

True or False? 25. ____F___Photosynthesi s takes place at a faster rate in green light.

True or False? 26. ________ Photosynthesis converts light energy into chemical energy.

True or False? 26. _T_ Photosynthesis converts light energy into chemical energy.

True or False? 27. __ Photosynthesis converts chemical energy into light energy.

True or False? 27. _F_ Photosynthesis converts chemical energy into light energy.

True or False? 28. ________ Photosynthesis can be performed in total darkness.

True or False? 28. __T/F____ Photosynthesis can be performed in total darkness. This isn’t a fair question, because we know the Calvin cycle happens at night. Plants need some sort of light.

29. ___________________ are organisms that cannot make their own food and must obtain energy from the foods they eat.

29. _HETEROTROPHS_ are organisms that cannot make their own food and must obtain energy from the foods they eat.

30. The figure to the right shows how a student collected the gas produced (given off) from a plant in bright sunlight at a temperature of 27 oC. The gas being collected is probably ________________.

30. The figure to the right shows how a student collected the gas produced (given off) from a plant in bright sunlight at a temperature of 27 oC. The gas being collected is probably ___OXYGEN__.

31. What is a granum?

A stack of thylakoids, B

32. Where in the chloroplast is chlorophyll found?

Thylakoid Membrane

33. In the diagram to the right, the plant was exposed to several different colors of light. If all the light intensities were the same, under which color of light would OXYGEN be produced at the SLOWEST rate?

GREEN Plants mostly REFLECT green light.

STUDY!!