1. Photosynthesis Review Chapter 8

2. Plants “look green” because they
_____________ green wavelengths of light.
absorb reflect
reflect
Photosynthesis in plants takes place
inside which organelle?
chloroplasts

3. A _________________ is a molecule (like chlorophyll or carotinoids) that absorbs energy from light
Name the green pigment used by plants for photosynthesis
pigment
Chlorophyll

4. Blue-violet and red wavelengths
Absorption of Light by
Chlorophyll a and Chlorophyll b
© Pearson Education, Inc. Publishing as
Pearson Prentice-Hall. All rights reserved.
Which wavelengths
of light do
chlorophyll a and
chlorophyll b
absorb best?
Chlorophyll b
Chlorophyll a
Blue-violet and red wavelengths

5. Name the 2 energy and electron carriers
From where to land plants get the carbon dioxide needed for photosynthesis?
atmosphere
Name the 2 energy and electron carriers
produced during the light dependent
reactions.
NADPH & ATP

6. Which wavelength of light does Chlorophyll a and chlorophyll b
Absorption of Light by
Chlorophyll a and Chlorophyll b
© Pearson Education, Inc. Publishing as
Pearson Prentice-Hall. All rights reserved.
Which wavelength
of light does
Chlorophyll a and
chlorophyll b
absorb the least?
Chlorophyll b
Chlorophyll a
They do not
absorb green light.

7. Use chemical symbols and numbers to write the chemical equation for photosynthesis
___________+___________ __________ + __________
C6H12O O2
6 CO H2O

8. This organism is a _____________.
heterotroph
This organism is a _____________.
autotroph heterotroph
Image from:

9. #2 is called ________________.#1
Photosynthesis #2
Name the 2 sets of reactions that make up photosynthesis:
#1 is called ___________________.
Light-Dependent Reactions
#2 is called ________________.
Calvin Cycle
(or Light-independent Reactions)

10. Label the reactants and products for the Light dependent reactions #1 #3
Photosynthesis #2
Label the reactants and products for the Light dependent reactions
#1 = __________________
#2 = __________________
#3 = __________________
SUNLIGHT and WATER
ATP and NADPH
Oxygen

11. Label the reactants and products for the Calvin cycle
Photosynthesis #1
Calvin CYCLE #2 #3
Label the reactants and products for the Calvin cycle
#1 = __________________
#2 = __________________
#3 = __________________
ATP & NADPH
carbon dioxide
Sugars

12. Where does the Calvin cycle happen?
The clusters of proteins in the thylakoid membrane that collect light are called ________________
Where does the Calvin cycle happen?
PHOTOSYSTEMS
In the stroma

13. The Calvin cycle requires light.
TRUE or FALSE
The Calvin cycle requires light.
FALSE: It is light INDEPENDENT
A protein that helps chemical reactions
happen faster in living things is called an _______________
enzyme

14. This stack of membrane sacs is called a ________________
Which part of photosynthesis happens here?
granum
Light dependent reactions

15. Which part of photosynthesis happens here?
This space around the
grana is called
the _____________
Which part of photosynthesis happens here?
stroma
Calvin cycle

16. An organism that can make its own food like a green plant is called an
Carotenoids
______________ are
plant pigments that
are orange or yellow
instead of green
An organism that can make its own food like a green plant is called an
_______________
autotroph

17. Molecules that interact in a chemical reaction that are written on the left side of a chemical equation are called ________________
An organism that CAN’T make its own food and must get its energy from consuming other organisms
reactants
heterotroph

18. Reactions of photosynthesis that use light energy to produce ATP and NADPH
Large protein that adds a P to ADP to make ATP
Light-dependent reactions
ATP synthase

19. An organism like a green plant that can make its own food
Molecule made of ribose, adenine, and 3 phosphates used by living things to store and release energy
AUTOTROPH
ATP

20. Pigments that are yellow or orange not green
Clusters of light collecting
proteins found in the thylakoid
membrane
Space surrounding the thylakoids
inside a chloroplast
carotenoids
photosystems
stroma

21. Stack of thylakoid membranes
Process by which plants use sunlight to convert water and carbon dioxide (CO2) into oxygen (O2) and glucose
Stack of thylakoid membranes
PHOTOSYNTHESIS
GRANUM (pl. GRANA)

22. The change in shape of a protein at extremes of temperature or pH
6 carbon sugar molecule that is
the main product of photosynthesis and is used as the fuel burned by cells
denaturing
glucose

23. Negatively charged particle found circling the nucleus of an atom
Reactions of photosynthesis in which energy from ATP and NADPH is used to build high energy sugar molecules
Negatively charged particle found circling the nucleus of an atom
Calvin cycle
electron

24. In which part of photosynthesis is oxygen produced?
Cell organelle containing thylakoid stacks where photosynthesis happens
In which part of photosynthesis is oxygen produced?
chloroplast
Light-dependent reactions

25. Another name for the Calvin cycle
Molecules that are produced during a chemical reaction that are written on the right side of a chemical equation
Another name for the Calvin cycle
products
Light independent reactions

26. Which gas that we need is given off during photosynthesis?
Where do the carbon atoms come from that end up in glucose made by the Calvin cycle?
Which gas that we need is given off
during photosynthesis?
Carbon dioxide
oxygen

27. Where does the OXYGEN come from that ends up in glucose after the Calvin cycle?
Where to does the ATP and NADPH produced during the light-dependent reactions go next?
Carbon dioxide
They are used by the Calvin cycle to make sugar

28. This organism is a(n) _____________.
autotroph heterotroph
Heterotroph
Fungi get their energy
by absorbing nutrients
from dead organisms.

29. Name 2 factors that can affect the rate of photosynthesis.
What do you think would happen to the rate of photosynthesis on a cloudy day?
Temperature, availability of water,
and light intensity
It would be slower than on a sunny day

30. How many phosphate groups are in a molecule of ADP?
Write the equation for changing ADP into ATP. 2
ADP + P + energy → ATP

31. What compounds are formed from carbon dioxide during the Calvin cycle?
Which part of photosynthesis can continue at night?
sugars (glucose)
Calvin cycle

32. This organism is a(n) _____________.
autotroph heterotroph
autotroph

33. Comes from H2O when water is split
Tell which molecule the H in NADPH originally comes from.
NADPH
Comes from H2O
when water is split

34. Animal cells store their glucose as _______________ glycogen
Animal cells store their glucose
as _______________
Starch Glycogen
glycogen
Image from: BIOLOGY by Miller and Levine; Prentice Hall Publishing©2006
This reaction shows how cells
_______________ energy
STORE RELEASE
RELEASE

35. Label the parts of this chloroplast
A (individual membrane sac) = _________________
B (space inside the sac) = _____________________
C (stack) = __________________
D (space surrounding the sacs) = ________________
E (space outside the chloroplast) = ________________
thylakoid
Thylakoid space
Granum (pl. grana)
stroma
cytoplasm
Image from: BIOLOGY by Miller and Levine; Prentice Hall Publishing©2006

36. Plant cells store their glucose as _______________ starch
Starch Glycogen
starch
Image from: BIOLOGY by Miller and Levine; Prentice Hall Publishing©2006
This reaction shows how cells
_______________ energy
STORE RELEASE
STORE

37. Label the parts of this molecule A = ______________________
Name this molecule used to store and transport energy
ATP-adenosine triphosphate
Label the parts of this molecule
A = ______________________
B = ______________________
C = ______________________
adenine
Ribose sugar
Phosphate groups
Image from: BIOLOGY by Miller and Levine; Prentice Hall Publishing©2006

38. Tell which molecule each of the atoms that end up in glucose originally came from:
_______ ________ _________
CO2
CO2
H2O

39. What are the reactants in the LIGHT REACTIONS?
Which TWO high energy carriers are produced in the LIGHT REACTIONS?
WATER
ATP & NADPH

40. What are the reactants in the LIGHT INDEPENDENT REACTIONS?
What are the products of the LIGHT REACTIONS?
ATP & NADPH & CO2
ATP & NADPH & O2

41. What are the products in the LIGHT INDEPENDENT REACTIONS?
How many phosphates are attached to
an ATP molecule?
glucose 3

42. This T-shirt looks blue because it is __________ blue light.
reflecting absorbing
reflecting