Name ____________________________
BIOLOGY
CHAPTER 6 REVIEW
PHOTOSYNTHESIS
MATCHING (fill in the blank with the letter of the corresponding word).
A.
B.
C.
D.
E.
grana (granum)
heterotrophs
stroma
thylakoid
cellular respiration
F. carotenoids
G. NADPH
H. chemiosmosis
I. stomata
J. autotrophs
K. energy
L. photosystem II
M. photosytem I
N. ATP
1. In the process called ____________, organic compounds are combined with O2 to
produce ATP and CO2 and water are given off as wastes. This process is the reverse of
photosynthesis.
2. The electrons of photosystem I are eventually replaced by electrons from
_______________.
3. ________are organisms that cannot make their own food, such as humans.
4. The solution surrounding the thylakoids in a chloroplast is called
__________________.
5. _________ is the process by which chemicals (specifically protons) pass through a
membrane resulting in ATP formation.
6. __________is required for a variety of life processes including growth and
reproduction, movement, and transport of certain materials across cell membranes.
7. Stacks of thylakoids are called ____________.
8. The light reactions take place in the ____________membrane of the chloroplast.
9. Accessory pigments such as yellow, orange, and red __________(carotenes plus
xanthophylls combined) absorb colors that chlorophyll a cannot, and enable plants to
capture more of the energy in sunlight.
10. Organisms that manufacture their own food, such as plants, are called
_________________.
11. Most water loss in plants occurs through small pores called ________, found on the
undersides of leaves.
12. Chemiosmosis in the thylakoid membrane is directly responsible for providing the
energy to produce ________.
COMPLETION (Fill in the blanks with the most correct answers)
13. The process by which light energy is transferred to chemical energy is called
_________________.
14. The equation for photosynthesis in CHEMICAL SYMBOLS is
___________________________________________________________.
15. The 2 types of chlorophyll are ____________________ and
_______________________.
16. The colors of light ranging from red to violet that you can SEE is called the
__________________ ___________________________.
17. A _________________________ is a unit of clusters of pigment molecules located
in the thylakoid membrane.
18. If a pigment in an object transmits the color blue, then the object would appear
_______________ (color).
19. The dark reactions do NOT need light to occur, but they DO need the products of the
__________________ __________________.
20. The solution surrounding the thylakoids in a chloroplast is called
__________________.
21. The 2 main products made in the light reactions that will be used in the dark
reactions are _______ and _________.
22. Another name for the dark reactions is the ________________ Cycle.
23. The dark reactions take place in the __________ of the chloroplast.
24. As CO2 diffuses into the stroma to begin the Calvin Cycle, the first compound that it
bonds to is a 5-carbon compound called _________________. (abbreviation)
25. In the _______ pathway, CO2 is bound to an intermediate compound before it
enters the Calvin cycle.
26. During chemiosmosis, a special protein gate called _________ ________________
opens up to allow H+ through to the opposite side of the membrane.
27. In a photosystem, the main place where all energy is transferred to and that contains
a pair of chlorophyll a molecules is called the __________________ ______________.
28. Waves of light are measured in __________________________, the distance
between crests in a wave.
29. The replacement of electrons in photosystem II comes from the splitting of
____________.
30. There are a total of _____ ATPs used to make 1 molecule of glucose in the Calvin
cycle.
31. One plant that uses the C4 pathway is _________________.
32. CAM stands for __________________ ___________________
________________________.
33. Photosynthesis is an example of a __________________ ____________________,
a complex set of reactions in which the product of one reaction is used in the next
reaction.
34. The initial reactions of photosynthesis are called the ________________
___________________.
35. Light from the sun appears white, but can be separated by passing it through a
______________.
36. A compound that absorbs light is called a __________________.
37. A green, light-absorbing pigment called ________________________ is found
inside chloroplasts.
38. Based on the cycle of photosynthesis and cellular respiration, one can say that the
ultimate source of energy for all living things on Earth is the ____________.
39. The role of the green pigment _________________ in photosynthesis is to absorb
light energy from the sun.
40. When light strikes an object, the light may be reflected, transmitted, or
________________.
41. Chlorophyll is green because it ________________ (absorbs or transmits) green
light.
42. The source of oxygen produced during photosynthesis is _______________.
43. The major atmospheric byproduct of photosynthesis is ______________.
44. When electrons of a chlorophyll a molecule are raised to a higher energy level, they
enter an ______________ _____________ chain and eventually are transferred to
NADP+ to make NADPH.
45. The products of the light reactions that provide energy for the Calvin cycle are
__________ and ___________.
46. The ______________ cycle of photosynthesis requires ATP and NADPH, can occur
in either light or dark conditions, and generates glucose.
47. The energy used in the Calvin cycle for the production of carbohydrate molecules
comes from ATP made during the ____________ reactions.
48. Another name for the dark reactions and the Calvin cycle is the _____ cycle.
49. The energy from the sun is converted into chemical energy in the form of organic
compounds in a series of linked chemical reactions called a __________________
pathway.
50. When light energy is passed to chlorophyll a molecules in the reaction center, the
electrons of chlorophyll a become _________________ or energized.
51. C3, C4, and CAM plants differ from each other in that ______ and _____ plants have
their stomata open during the day, and ________ plants have their stomata open only at
night.
52-56. Draw a chloroplast below and label the following structures:
Stroma
Thylakoid
Grana
Inner Membrane
Outer Membrane
57-63. In the following diagram of the Calvin Cycle, label all missing names and
numbers.
57.
61-62.
63.
60.
58.
59.
64-69. In the diagram of the light reactions below, label the following:
Where water is needed and what forms when water splits
Where chemiosmosis occurs
The location of chlorophyll a
The location of accessory pigments
Where NADP+ accepts electrons to become NADPH
The location of the 2 electron transport chains
70-78. In the overview of photosynthesis below, label the missing parts.
70.
78.
77.
72.
75.
71.
73.
74.
76.
SHORT ANSWER- Answer ALL of the following questions:
79-80. Why do we say that all life depends on autotrophs?
81-82. Explain the main reason why the light reactions must come before the dark
reactions.
83-86. In the equation for photosynthesis:
6 CO2 + 6 H2O + light energy  C6H12O6 + 6 O2
explain where CO2 comes from and where it is needed, where water is needed and what
for, what C6H12O6 is and where it is made, and where O2 goes after it is produced.