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36 questions
Where is glucose synthesized?
Photosystem II
Photosystem I
Calvin Cycle
Glycolysis
How many glucose molecules are produced from every six molecules of carbon dioxide that enter the Calvin cycle?
1
3
6
12
Which of the following is NOT a limiting factor for photosynthesis?
Light intensity
Concentration of CO2
Concentration of O2
Wavelength of light
Amount of water
Besides ATP and O2, what other compound is produced as a result of the light dependent reactions?
NADPH (reduced NADP)
NADP+
Glucose
ADP
What is produced by chemiosmosis?
ATP
Oxygen
Water
Protons
Where does photoactivation of electrons take place
Photosystems I and II
Photosystem I only
Photosystem II only
Electron Transfer Chain
What is produced by the photolysis of two water molecules?
O2 + 4H+ + 4e-
O2 + 4H+ + 2e-
1/2 O2 + 2H+ + 2e-
1/2 O2 + 2H+ + 4e-
the goal of the light dependent stage of photosynthesis is to convert light energy into...
ATP & NADPH
glucose
G3P
oxygen gas
The creation of ATP in the light dependent reaction is...
oxidative phosphorylation
photophosphorylation
substrate level phosphorylation
Stages of the Calvin Cycle:
A. Regeneration
B. Carbon Fixation
C. Reduction
What is the correct order?
A, B, C
B, C, A
B, A, C
C, B, A
The goal of the reduction phase of the Calvin Cycle is...
to reduce PGA to G3P
to reduce G3P to RuBP
to fix CO2 to PGA
to generate ATP & NADPH
The goal of the regeneration phase of the Calvin Cycle is to
convert G3P to RuBP
convert PGA to G3P
convert G3P to glucose
convert CO2 to PGA
Oxygen gas is produced...
When the water molecule is split
During ATP synthesis
When CO2 is fixed in the Calvin Cycle
What NADP+ is reduced to NADPH
A. Photons excite the electrons of PS I
B. Photons excite the electrons of PSII
C. Electrons travel along the ETC, allowing for the pumping of a proton
D. NADP + is reduced to NADPH
What is correct sequence of events?
A, C, B, D
B, C, A, D
A, B, C, D
C, A, B, D
For every 6 CO2 used in the Calvin Cycle, 12 G3P molecules are made, but only 2 of the G3Ps get used to make glucose. Why?
The other 10 G3P molecules are needed for the regeneration of RuBP
All 12 G3P molecules are used to make glucose
The 10 other G3P molecules are needed to make other molecules
Only 2 of the G3Ps have enough energy to make glucose
The electrons in chlorophyll release energy when...
they become excited by photons of light
they fall from their excited state back to their ground state
reduce NADP+ to NADPH
absorb certain wavelengths of light
Most plants contain more than one type of pigment. Why?
To maximize the wavelengths of light then can absorb
To protect their chloroplasts from unabsorbed light energy
to allow them to do photorespiration
to increase the number of photosystems available to them
The light reactions occur in the ________ and the light independent reactions take place in the ________.
Chloroplast / thylakoid membrane
stroma / thylakoid
mesophyll / stomata
thylakoid membrane / stroma
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