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Have-a-Java Quiz 3 - Photosynthesis
During the light-dependent reactions of photosynthesis, __________ passes electrons to an Electron Transport Chain.
A) chlorophyll a
B) chlorophyll b
A chlorophyll "a" molecule consists of all the following structural components except:
A) alternating single and double bonds
B) phytol tail
D) central magnesium atom
One important contribution of water to the light-dependent reactions is that it:
A) provides hydrogen ions to PI
B) provides carbon dioxide to PI
C) provides photons to PII
D) provides electrons to PII
The major product(s) of the light-independent reactions is/are:
A) NADPH, ATP
B) NADP+, ATP, oxygen
C) water, H+
C4 plants utilize the enzyme ______________ to initially fix carbon dioxide in the__________ cells.
A) PEP carboxylase; mesophyll
B) RuBP carboxylase; bundle sheath
C) ATP synthase; stroma
D) PEP carboxylase; matrix
During cyclic photophosphorylation:
A) no oxygen is produced
B) no ATP is produced
C) no NADPH is produced
D) A and C
The light-dependent reactions occur in the ______; whereas the light-independent reactions occur in the _______.
A) stroma; thylakoid
B) stroma; matrix
C) thylakoid; stroma
D) matrix; cytoplasm
The first stable 3-carbon organic molecule produced by the C3 (Calvin) cycle is:
How many carbon dioxide molecules must be "fixed" in the C3 cycle to produce 1 molecule of glucose?
Photosynthesis occurs most efficiently when plants are exposed to ______ light.
The major pigments responsible for photosynthesis in green plants are:
The electron transport chain in the thylakoid membrane passes electrons from carrier to carrier. In the process, energy is released and is used to pump _________ from the stroma to the thylakoid interior.
Electrons that pass down the ETS of both Photosystem I and II are finally picked up by:
Stomata open to allow carbon dioxide into the leaf. The stomata open when surrounding guard cells fill with _____ and bend allowing a space (the stoma) to form between them.
Glucose produced by photosynthesis can be saved by the plant as _____ (for food storage) and _______ (for structural material).
A) protein; starch
B) cellulose; sucrose
C) starch; cellulose
D) glycogen; lipid
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