ch7 photosynthesis Flashcards
Which of the following are produced by reactions that take place in the thylakoids and are consumed by reactions in the stroma?
ATP and NADPH
Of the following metabolic processes, which one is common to photosynthesis and cellular respiration?
reactions that store energy by pumping H+ across membranes
The Calvin cycle requires ______ and ______ from the light reactions in order to operate.
ATP… NADPH
What is one reason why plants have accessory pigment molecules, like chlorophyll b and carotenoids?
to absorb energy in parts of the electromagnetic spectrum that chlorophyll a cannot
______ is the source of the oxygen gas released by a photosystem.
h2o
If you provided your shade-tolerant plants with their preferred wavelength of light, but only minimal amounts of water, which of the following would you expect to occur?
decreased amounts of ATP being produced by the plants
what is the equation of photosynthesis?
6 CO2 + 6 H2O → C6H12O6 + 6 O2
In photosynthesis, redox reactions ultimately transfer electrons from ______ to ______.
H2O… CO2
Red and blue light support the highest rates of photosynthesis because:
chlorophyll absorbs these wavelengths more than other wavelengths
C4 (desert) plants conserve water by ______.
keeping their stomata closed when the weather is hot and dry
Where does the Light Reaction of photosynthesis take place?
Thylakoid discs (the pancake like things)
What does the Photosystems consists of?
Antenna complex and a reaction center
What are the products of Photosystem I & Photosystem II?
ATP, O2, and NADPH are the products
What products of the light reaction are used by the Calvin cycle?
ATP and NADPH are used in the calvin cycle ot make sugar
How many molecules of carbon dioxide are required for synthesis of glucose?
6 molecules of carbon dioxide are needed to make glucose
