Exam 5: Photosynthesis (PP questions) Flashcards
An organism that makes its own food, as in photosynthesis is called a(n):
Autotroph
What are the 3. end products of photosynthesis?
water, oxygen and glucose
What 2 inorganic molecules are required for photosynthesis?
CO2, and water
The oxygen we breath originates from what molecule?
water
The colors of light most used by plants in photosynthesis is/are?
violet, blue and red
P700 and P680 are reaction center molecules in photosystems. There two molecules are special molecules of the pigment?
Chlorophyll a
Gas exchange in a leaf occurs through tiny openings called?
Stomates
What tissue functions to carry out photosynthesis?
Mesophyll
The pigment molecules that carry out the light reaction of photosynthesis are embedded in membranes of the:
Chloroplast thylakoid
What happens in the light reaction when energy is transferred to the reaction center molecules (P700 and P680)?
P700 and P680 are oxidized
As electrons are passed through the ETS, energy is released and used to:
pump H+ into the interior of the thylakoid
As H+ diffuses through the big enzyme complex in the thylakoid membrane, what is produced?
ATP
Which of the following represents electrons flow during the light reaction?
water, P860, P700, to NADP
In the Calvin Cycle, carbon dioxide is fixed by bonding it to:
RuBP
Two products of the light reaction are needed for the Calvin cycle to produce PGAL (G3P) They are:
ATP and NADPH
C4 plants are adapted to hot and dry conditions because they:
Accumulate carbon dioxide in bundle sheath cells where they run the calvin cycle
The main reservoir of carbon on the Earth is as:
Carbon dioxide in the atmosphere
Which of the following does not return CO2 to the atmosphere?
photosynthesis
The chief greenhouse gas that is increasing in the atmosphere due to burning fossil fuels and deforestation
carbon dioxide
