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AP Biology Photosynthesis
Photosynthesis
19
Biology
12th Grade
01/13/2008
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Term
The process in which oxygen, not carbon dioxide, becomes attached to RuBP(fixed) is
a.
the Calvin-Benson cycle.
b.
photolysis.
c.
photophosphorylation.
d.
chemiosmosis.
e.
photorespiration.
 Definition

 

 

e.
photorespiration.

 
Term
Four of the five answers listed below are processes associated with light-dependent reactions. Select the exception.
a.
photolysis
b.
chemiosmosis
c.
fixing carbon dioxide
d.
photosystem I and II
e.
noncyclic ATP formation
 Definition

 

 

fixing carbon dioxide

 
Term
The internal membrane system of the chloroplast is called a
a.
thylakoid.
b.
stroma.
c.
lamella.
d.
mitochondrion.
e.
tracheid.
 Definition

 

 

thylakoid.

Term
Which of the following is most descriptive of an electron transfer chain?
a.
It generates energy from nothing.
b.
It is a mechanism used by cells to dispose of unused electrons.
c.
It utilizes ATP in the synthesis of nutrients.
d.
It transfers energy, stepwise, from one compound to another.
e.
It requires activation by sunlight.
 Definition

 

 

 

d.
It transfers energy, stepwise, from one compound to another.

 
Term
The concept that concentration differences in H+ and electric gradients across a membrane are responsible for ATP formation is known as
a.
the chemiosmotic model.
b.
the photosystem mechanism.
c.
the process of photolysis.
d.
the electron transfer system.
e.
the cyclic pathway.
 Definition

 

 

 

the chemiosmotic model.

Term
In the noncyclic pathways,
a.
there is a one-way flow of electrons from photosystem II to photosystem I.
b.
ATP alone is produced.
c.
hydrogen ions do not accumulate in the thylakoid compartments.
d.
electrons are only transferred to hydrogen acceptors.
e.
water is not involved in any of the reactions.
 Definition

 

 

there is a one-way flow of electrons from photosystem II to photosystem I.

Term
The photosystem with P700 is designated "I" (Roman numeral one) because
a.
it is the first to react.
b.
it is assumed to have evolved first.
c.
it is primary.
d.
a and b are correct
e.
b and c are correct
 Definition

 

 

it is assumed to have evolved first.

 
Term
The enzymes associated with the light-dependent reactions of photosynthesis are located
a.
on the outer membranes of the chloroplast.
b.
in the liquid portion of the chloroplast.
c.
on the thylakoid membrane.
d.
throughout the cytoplasm.
e.
on the plasma membrane.
 Definition

 

 

 

on the thylakoid membrane.

 
Term
The enzyme needed to “fix” carbon in the Calvin-Benson Cycle is known as what?
a.
RuBP
b.
PGA
c.
PGAL
d.
Rubisco
e.
ATP synthase
 Definition

 

 

 

Rubisco 
Term
Hydrogen ion flow in the thylakoid compartments
a.
occurs between photosystems I and II.
b.
is called the hydrogen transfer system.
c.
provides energy to produce ATP molecules.
d.
causes excitation of chlorophyll molecules.
e.
requires the intermediary action of acceptor molecules.
 Definition

 

 

provides energy to produce ATP molecules.

 
Term
Plant cells produce one molecule of O2
a.
by splitting carbon dioxide.
b.
during respiration.
c.
by splitting ribulose bisphosphate.
d.
by splitting two molecules of water.
e.
by breaking down glucose.
 Definition

 

 

by splitting two molecules of water.

 
Term
The carbon dioxide acceptor in the Calvin-Benson cycle is
a.
phosphoglycerate (PGA).
b.
ribulose bisphosphate (RuBP).
c.
phosphoglyceraldehyde (PGAL).
d.
glucose.
e.
phosphoenol pyruvate.
 Definition

 

 

ribulose bisphosphate (RuBP).

 
Term
ctual assembly of sugars during photosynthesis
a.
occurs during light-independent reactions.
b.
takes place in the stroma.
c.
requires chlorophyll.
d.
occurs during light-independent reactions and takes place in the stroma.
e.
occurs during light-independent reactions, takes place in the stroma, and requires chlorophyll.
 Definition

 

 

occurs during light-independent reactions and takes place in the stroma.

Term
ATP is formed when __________ the thylakoid compartment.
a.
hydrogen ions enter
b.
electrons leave
c.
hydrogen ions leave
d.
electrons enter
e.
water is split in
 Definition

 

 

hydrogen ions leave

 
Term
The enzyme utilized in chemiosmosis during the light reactions is?
a.
NADPH
b.
PGA
c.
PGAL
d.
Rubisco
e.
ATP synthase
 Definition

 

 

 

                      ATP synthase
 

 
Term
The final hydrogen and electron acceptor in the noncyclic pathway is
a.
FAD.
b.
PGA.
c.
NADP+.
d.
FMN.
e.
PEP.
 Definition

 

 

NADP+

Term
Where in a plant cell is chlorophyll found?
a.
on the outer chloroplast membrane
b.
inside the mitochondria
c.
in the stroma
d.
in the thylakoids
e.
none of these
 Definition

 

 

in the thylakoids

Term
The first stable compound produced from CO2 in the light-independent reaction is
a.
phosphoglycerate (PGA).
b.
ribulose bisphosphate (RuBP).
c.
phosphoglyceraldehyde (PGAL).
d.
glucose.
e.
phosphoenol pyruvate.
 Definition

 

 

 

phosphoglycerate (PGA)

Term
The oxygen released in photosynthesis comes from
a.
carbon dioxide.
b.
glucose.
c.
ribulose bisphosphate.
d.
water.
e.
atmospheric oxygen.
 Definition

 

 

 

water 
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