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Photosynthesis

Photosynthesis

Photosynthesis: RuBisCo is NOT a Cookie Company Quiz

Think you’ve got your head wrapped around Photosynthesis? Put your knowledge to the test. Good luck — the Stickman is counting on you!
Q. What causes protons to move into the stroma?


Diffusion causes the protons to move down a concentration gradient.
The protons are pumped into the stroma by the electron transport chain.
The necessary protons already exist in the stroma.
H2O assists the protons in moving into the stroma.
The protons naturally move toward a higher concentration of protons in the stroma.
Q. When is O2 produced during photosynthesis?


During the light-independent reactions, when electrons are pulled from H2O
During the light reactions, when electrons are pulled from H2O
During the light reactions, when carbon is fixed from CO2
During the light-independent reactions, when carbon is fixed from CO2
During cellular respiration in the mitochondria
Q. What type of pigments transfers electrons to the electron transport chain?


Action pigments
Absorption pigments
Action and absorption pigments
RuBisCo
Enzymes
Q. Why are ATP and NADPH such important molecules in the cell for energy?


They are formed from protons and electrons from H2O.
They are formed from protons and electrons from CO2.
They are very strong oxidizing agents.
They are reduced.
They are very strong reducing agents.
Q. What happens to the O2 present in CO2 used in the dark reactions?


It is released as O2.
It is used in the light reactions as O2.
It leaves as H2O.
Animals inhale it.
It is used to convert RuBP to a 6-carbon sugar.
Q. RuBisCo catalyzes the conversion of CO2 to a ____-carbon-containing molecule?


1
2
3
4
5
Q. CAM plants are unique because


they use RuBisCo.
they only open their stomata at night.
they don’t use photosynthesis.
they open their stomata during the day.
they don’t need the light-independent reactions to do photosynthesis.
Q. What other cellular organelle is most like the chloroplast because of its evolutionary roots?


The mitochondria
The nucleus
The endoplasmic reticulum
The lysosome
The Golgi body
Q. Which of the following is NOT a characteristic of a C4 plant?


They are located in hot and dry climates.
CO2 in the plant is fixed in different cells from the light reactions.
CO2 in the plant is pumped into the bundle sheath cells.
They only open their stomata at night.
CO2 in the plant is first attached to a 3-carbon molecule.
Q. Photorespiration


is the process by which light energy is converted to chemical energy.
produces a lot of energy for the cell in the form of ATP and NADPH.
is a process that occurs when the CO2 concentration becomes too low, and RuBisCo begins to use O2 instead of CO2.
describes the process of how the Sun allows animals to breathe.
is also called the Calvin cycle.
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