Flashcards in Chapter 6: Photosynthesis Study Guide Deck (29)
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1
an organism that must get energy from food instead of directly from sunlight or inorganic substances
heterotroph
2
an organism that uses energy from sunlight or from chemical bonds in inorganic substances to make organic compounds
autotroph
3
the process of converting light energy from the sun into chemical energy in the form of organic compounds primarily carbohydrates.
photosynthesis
4
Photosynthesis equation
6CO2 + 6H20 --> C6H12O6 + 6O2
(--> = light energy)
5
The 2 stages of photosynthesis
Light reactions and the Calvin Cycle
6
Where do the light reactions occur?
The thylakoid membrane
7
Where does the Calvin Cycle occur?
The stroma of the chloroplast
8
organelles found in plants and algae where photosynthesis occurs
chloroplast
9
a stack of thylakoids in a chloroplast
granum
10
in plants, the solution that surrounds the thylakoids in a chloroplast
stroma
11
a membrane system found within chloroplasts that contain the components for photosynthesis
thylakoids
12
a compound that absorbs light
pigment
13
The pigments found within thylakoids are __________ and ____________.
chlorophylls and carotenoids
14
What colors of light does chlorophyll absorb?
red and blue
15
What color of light does chlorophyll reflect?
green
16
What colors of light do carotenoids absorb?
yellow, orange, and brown
17
Where do light reactions occur?
in the thylakoids
18
a cluster of pigment molecules and the proteins that the pigment molecules are embedded in
photosystem
19
As electrons move down the electron transport chain they ____ ______.
lose energy
20
The energy the electrons lose as they move down the electron transport chain is used to move ________ (H+) into the _________.
protons, thylakoid
21
The electrons are replaced by electrons that have passed through the electron transport chain from ____________ ___.
photosystem II
22
Products of the light reactions
NADPH and ATP
23
Where do the NADPH and ATP produced in the light reactions go?
They go to the Calvin Cycle to be used for energy.
24
as electrons travel along the electron transport chain, protons move into the thylakoid and build up a concentration gradient. The movement of protons and through ATP synthase results in the synthesis of ATP.
chemiosmosis
25
a series of enzyme-assisted chemical reactions that produces a three-carbon sugar
Calvin Cycle
26
What is produced by the Calvin Cycle?
3 RuBP molecules
27
Leaves take in and release CO2 and release O2 through their ________.
stomata
28
the many openings in a leaf or a stem of a plant that enable gas exchange to occur
stomata
29
