Bio 116 Exam 2 Photosynthesis
Questions and Answers
inner membrane - ANSWER-The membrane of the mitochondria that is the site of
electron transport and chemiosmosis.
Photosystem II - ANSWER-light-harvesting units of a chloroplast's thylakoid
membrane; Main product is ATP.
Photosystem 1 - ANSWER-a light reaction in which ATP and NADPH are formed
(comes 2nd)
Electromagnetic spectrum - ANSWER-All of the frequencies or wavelengths of
electromagnetic radiation
Why are most plants green? - ANSWER-Chlorophyll reflects green light
carotenoids pigment (Fall leaves) - ANSWER-gives plants the yellow/orange
Reaction center - ANSWER-reaction centre contains pigments such as chlorophyll
and phaeophytin
Waste products of photosynthesis - ANSWER-oxygen
ATP production in photosynthesis - ANSWER-Light is absorbed and the energy is
used to drive electrons from water to generate NADPH and to drive protons across a
membrane. These protons return through ATP synthase to make ATP.
Cyclic electron flow - ANSWER-Only photosystem I is used-Only ATP is produced
noncyclic electron flow - ANSWER-electrons are removed from water and passed
through PSII and PSI before ending up in NADPH. This process requires light to be
absorbed twice, once in each photosystem, and it makes ATP .
Calvin cycle - ANSWER-The Calvin cycle uses ATP and NADPH to convert CO2 to
sugar. Occurs in the stroma
Calvin Cycle 3 Phases - ANSWER--Carbon fixation
Reduction
Regeneration of the CO2 acceptor
Carbon Fixation - ANSWER-the process by which CO2 is incorporated into organic
compounds. Takes place stroma. Forming glucose
Questions and Answers
inner membrane - ANSWER-The membrane of the mitochondria that is the site of
electron transport and chemiosmosis.
Photosystem II - ANSWER-light-harvesting units of a chloroplast's thylakoid
membrane; Main product is ATP.
Photosystem 1 - ANSWER-a light reaction in which ATP and NADPH are formed
(comes 2nd)
Electromagnetic spectrum - ANSWER-All of the frequencies or wavelengths of
electromagnetic radiation
Why are most plants green? - ANSWER-Chlorophyll reflects green light
carotenoids pigment (Fall leaves) - ANSWER-gives plants the yellow/orange
Reaction center - ANSWER-reaction centre contains pigments such as chlorophyll
and phaeophytin
Waste products of photosynthesis - ANSWER-oxygen
ATP production in photosynthesis - ANSWER-Light is absorbed and the energy is
used to drive electrons from water to generate NADPH and to drive protons across a
membrane. These protons return through ATP synthase to make ATP.
Cyclic electron flow - ANSWER-Only photosystem I is used-Only ATP is produced
noncyclic electron flow - ANSWER-electrons are removed from water and passed
through PSII and PSI before ending up in NADPH. This process requires light to be
absorbed twice, once in each photosystem, and it makes ATP .
Calvin cycle - ANSWER-The Calvin cycle uses ATP and NADPH to convert CO2 to
sugar. Occurs in the stroma
Calvin Cycle 3 Phases - ANSWER--Carbon fixation
Reduction
Regeneration of the CO2 acceptor
Carbon Fixation - ANSWER-the process by which CO2 is incorporated into organic
compounds. Takes place stroma. Forming glucose
