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bio exam2 ch7

Terms in this set (17)

what are photoautotrophs ?
kelp
Thylakoids are found in the __________ of the chloroplast.
stomata
Which of the following statements regarding the reduction of CO2 to sugar during photosynthesis is correct?
a)Electrons (with accompanying protons) from water are transferred to CO2 during photosynthesis.
b)Electrons (with accompanying protons) are added to oxygen during photosynthesis.
c)Electrons (with accompanying protons) are added to water during photosynthesis.
a
The light reactions of photosynthesis yield __________. The Calvin cycle produces __________.
O2, ATP, NADPH; sugar, ADP, NADP+
The reduction of NADP+ to NADPH in the light reactions occurs with the assistance of __________.
electrons from water and energy from sunlight
What is the most important function of carotenoid pigments in plants?
protect cells from excess sunlight
Photosystems I and II work together to produce __________.
ATP and NADPH
In the light reactions, __________ and an __________ transform __________ energy into __________ energy of ATP and NADPH.
two photosystems; electron transport chain; light; chemical
What is the final electron acceptor in the light reactions of photosynthesis?
NADP+
Two separate processes occur in the light reactions of photosynthesis. In one, __________ is generated as the result of an electric transport chain. In the other, the high concentration of __________ in the thylakoid space drives the synthesis of __________.
NADPH; H+; ATP
At which step of the 4-step Calvin cycle is G3P produced?
reduction, step 2
How many molecules of ATP and NADPH are required to make one molecule of G3P in the Calvin cycle?
9 ATP; 6 NADPH
Plants remove __________ from the atmosphere and return __________ to the atmosphere. The other product(s) of photosynthesis is (are) __________.
carbon dioxide; oxygen; sugars
About __________ % of the products of photosynthesis are used to power cellular respiration and to make organic molecules that the plant cells need. What happens to the rest of the products?
50%; stored or made into cellulose
Chloroplasts are located in __________ cells. Each such cell contains __________ chloroplasts. Chlorophyll molecules are located on membranes of the __________.
mesophyll; 30-40; thylakoids
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