Chapter 7 Quizzes
Which of the following conditions favors photorespiration?
A hot, dry environment
Which of the following does NOT occur in the Calvin cycle?
ADP is phosphorylated to ATP
The Calvin cycle of photosynthesis uses up ____ provided by the light reactions.
ATP and NADPH only
Which of the following is produced during both noncyclic AND cyclic electron flow?
ATP only.
Which of the following is the very next event that occurs when a chlorophyll molecule absorbs light?
An electron is boosted to an excited state.
Which of the following is most likely to occur in a leaf cell of a CAM plant during the day?
Decarboxylation of malic acid to form CO2
Compared with a C3 plant, a C4 plant ____.
It enters the Calvin cycle via the Rubisco reaction.
Which of the following statements about photorespiration is FALSE?
It yields ATP but not NADPH.
Rubisco can use ______ or CO2 as a substrate.
O2
In photophosphorylation, protons flow through the ATP synthase complex back into the _____.
chloroplast stroma
The Calvin cycle takes place in the _____.
chloroplast stroma
The synthesis of sucrose from glyceraldehyde 3-phosphate (PGAL) takes place in the ____.
cytosol
Under extremely ______ conditions, CAM plants would most likely grow ______ C3 and C4 plants.
dry; more rapidly than
Which of the following statements about an antenna complex is FALSE?
Which of the following statements about an antenna complex is FALSE?
The REAL end product of photosynthesis in algae and green plants is _____.
a three-carbon sugar
How many carbon atoms are in a molecule of Ribulose 1,5-bisphosphate (RuBP)?
five
How many photons are required for the photolysis of water at photosystem II to yield one molecule of O2 gas?
four.
The energy-transduction reactions of photosynthesis are also called the ______ reactions.
light-dependent.
Compared with a C3 plant, a C4 plant ____.
needs more ATP to fix CO2
The O2 evolved in photosynthesis comes from ______.
water.
Most of the glyceraldehyde 3-phosphate produced in photosynthesis is either exported to the cytosol and converted to ______ for transport to other cells or stays in the chloroplast and is converted to ______ for storage.
sucrose; starch
The role of Rubisco is to catalyze the conversion of ____.
CO2 and RuBP to an unstable six-carbon compound.
Which pigment occurs in ALL photosynthetic eukaryotes?
Chlorophyll a
Most of the glyceraldehyde 3-phosphate (PGAL) not exported to the cytosol is converted to ______ and stored in the chloroplasts.
starch