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Download Photosynthesis | BIOL - Cell Biology 1 - Introduction and more Quizzes Cell Biology in PDF only on Docsity!
Define Photosynthesis
a process that transforms solar energy into chemical
energy in the form of carbs
TERM 2
Who is Photosynthesis Performed by?
DEFINITION 2
plants
algae
cyanbacteria
TERM 3
What are the Reactants and Products of
Photosynthesis?
DEFINITION 3
Reactants: CO2 + H20 + UV rays
Products: Glucose + O
Opposite Cellular Respiration
TERM 4
How does CO2 enter the plant?
DEFINITION 4
through the STOMA
"mouth"
TERM 5
How does H20 enter the plant?
DEFINITION 5
roots
What high energy activated carriers are
produced by photosynthesis?
ATP
NADPH
TERM 7
Where does photosynthesis take place?
DEFINITION 7
inside chloroplasts
TERM 8
What is Chlorophyl?
DEFINITION 8
inside chloroplasts
this is the green pigment that captures light
TERM 9
What colors do chlorophyl absorb & what do
they reflect?
DEFINITION 9
absorb: reds and blues
reflect: green
TERM 10
What organelle do chloroplasts resemble?
DEFINITION 10
Mitochondria
What are the 2 components of chlorophyl and
what are their functions?
porphyrin ring: has a mg ion, absorbs light, resembles a
hemoglobin
hydrophobic tail: holds chlorophyl in thylakoid
membrane
TERM 17
What are photosystems, how many are there
& what are their 2 components?
DEFINITION 17
large multiprotein complexes containing chlorophyl that
capture light energy
there are 2 photosystems
they have a set of antenna complexes and a reaction
center
TERM 18
What does a antenna complex
do?
DEFINITION 18
capture light energy
TERM 19
What does a reaction center
do?
DEFINITION 19
converts light energy into chemical energy
TERM 20
What is a special pair and where is
it?
DEFINITION 20
chlorophyl dimer
located in the reaction center
What is the main goal of light
reactions?
to produce ATP and NADPH
TERM 22
Where do light reactions
occur?
DEFINITION 22
thylakoid membrane
TERM 23
What is the main goal of dark
reactions?
DEFINITION 23
CO2 is used to produce sugar using the ATP and NADPH
produced by light reactions
TERM 24
Where do dark reactions occur?
DEFINITION 24
stroma
TERM 25
What is the pathway of e through the light
reactions?
DEFINITION 25
PS2 -> ETC -> PS
What enzyme reduced NADP+ to NADPH?
ferredoxin=NADP reductase (FNR)
TERM 32
What is the final e acceptor of the
ETC?
DEFINITION 32
FNR
TERM 33
How are PS 1 e replaced?
DEFINITION 33
Plastocyanin
TERM 34
Write out the movement of e along the ETC
beginning with water splitting..
DEFINITION 34
water splitting in PS2plastoquinoneproton
pumpplastocyaninPS1 ferredoxinFNR
TERM 35
Where are there a lot of protons
initially?
DEFINITION 35
thylakoid space
What does the thylakoid membrane contain?
PS
ETC
PS
ATP synthase
TERM 37
What kind of gradient is created?
DEFINITION 37
H+ (proton) pump
TERM 38
In what direction do ions want to
move?
DEFINITION 38
areas of high concentrations to low concentrations
TERM 39
Flow of
H+
DEFINITION 39
protons flow from the thylakoid space to the stroma
through the enzyme ATP synthase
TERM 40
ATP synthase functions to do what?
DEFINITION 40
make ATP
What 5-C compound does each CO2 bind to in
the first step?
RuBP
TERM 47
What is RuBP carbozylase?
DEFINITION 47
enzyme
TERM 48
What are the products of CO
fixation?
DEFINITION 48
6 C molecules
TERM 49
What are the reactants and products during
CO2 reduction & what E carrier is used?
DEFINITION 49
Reactants: NADPH, ATP
Products: 6 G3P
Energy carrier: 3-PG
TERM 50
During the final step of the dark cycle, what
molecule is regenerated?
DEFINITION 50
RuBP
What can G3P
become?
amino acids
fatty acids
glycerol
glucose
sucrose
starch
cellulose
TERM 52
What pigments reflect orange/yellow? +
Examples
DEFINITION 52
carotenoids
ex) carrots
TERM 53
What pigments reflect red/purple/blue? +
Examples
DEFINITION 53
anthocyanins
ex) blueberries
TERM 54
Why do leaves change color?
DEFINITION 54
chlorophyl breaks down, unmasking carotenoids
