PHOTOSYNTHESIS –TUTORIAL
1.
During the light-dependent reactions of photosynthesis, __________ passes
electrons to an Electron Transport Chain.
A.
B.
C.
D.
E.
2.
One important contribution of water to the light-dependent reactions is that it
A.
B.
C.
D.
E.
3.
stroma; thylakoid
stroma; matrix
thylakoid; stroma
matrix; cytoplasm
mitochondria; liposome granules
Photosynthesis occurs most efficiently when plants are exposed to ______ light
A.
B.
C.
D.
E.
5.
provides hydrogen ions to Photosystem I
provides carbon dioxide to Photosystem I
provides photons to Photosystem II
provides electrons to Photosystem II
provides H+ to Photosystem I
The light-dependent reactions occur in the ______; whereas the light-independent
reactions occur in the _______.
A.
B.
C.
D.
E.
4.
chlorophyll a
chlorophyll b
carotenoid
water
stroma
green
orange
yellow
blue
indigo
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.
A.
B.
C.
D.
E.
glucose
oxygen
electrons
protons
water
6.
Electrons that pass down the ETS of both Photosystem I and II are finally picked up
by
A.
B.
C.
D.
E.
7.
Photosynthesis uses sunlight to convert water and carbon dioxide into
A.
B.
C.
D.
E.
8.
in the stroma
outside the chloroplasts
in the thylakoid membranes
only in chlorophyll molecules
inside mitochondria
Which step is the beginning of photosynthesis?
A.
B.
C.
D.
E.
11.
thylakoids.
chloroplasts.
plant cells
microfibril
all of the above
Where do the light-dependent reactions take place?
A.
B.
C.
D.
E.
10.
oxygen
high-energy sugars
ATP and oxygen
oxygen and high-energy sugars
NADH
The stroma is the space that surrounds
A.
B.
C.
D.
E.
9.
glucose
NAD+
NADH
NADP+
glucose-6-phosphate
Pigments in photosystem I absorb light
Pigments in photosystem II absorb light
High-energy electrons move through the electron transport chain
ATP synthase allows H+ ions to pass through the thylakoid membrane
photolysis of water molecules in ribosomes
How does the Calvin cycle differ from the light-dependent reactions?
A.
B.
C.
D.
It takes place in the stroma
It takes place in chloroplasts
It requires light
It takes place in the thylakoid
E. It needs the presence of ribosomes
12.
Photosynthesis consists of two processes: (Fotosintesis mengandungi dua proses)
A. the splitting of water to oxygen which takes place in the dark, and the
production of sugars which requires light
B. the splitting of water to oxygen, which requires light, and the production of
sugars, which takes place in the dark
C. the splitting of water and the production of sugars, both of which require
light
D. the splitting of water and the production of sugars, both of which takes place
in the dark
E. none of the above
13.
The longest wavelength of light that can induce the reactions of Photosystem I is
(Jarak gelombang cahaya yang terpanjang yang boleh mengaruh tindak balas-tindak
balas dalam Fotosistem I ialah)
A.
B.
C.
D.
E.
14.
The Calvin cycle is another name for (Kitaran Calvin adalah nama lain bagi)
A.
B.
C.
D.
E.
15.
light-independent reactions
light-dependent reactions.
photosynthesis
all of the above
photophosphorylation
In the first reaction of carbon dioxide fixation in photosynthesis, CO2 reacts with
______________ (Dalam tindak balas yang pertama dalam pengikatan CO2 dalam
fotosintesis, CO2 bertindak dengan ______________)
A.
B.
C.
D.
E.
16.
870 nm
780 nm
700 nm
680 nm
470 nm
ribulose 5-phosphate
ribulose 1,5-bisphosphate
ribose 5-phosphate
xylulose 5-phosphate
acetyl Co-A
The actual CO2 fixation process in photosynthesis is the incorporation of CO2 to form
(Proses pengikatan CO2 yang sebenar ialah memasukkan CO2 untuk membentuk
____________)
A. ribulose 5-phosphate
B.
C.
D.
E.
17.
Which of the following is NOT an intermediate in the C4 pathway? (Yang manakah
diantara yang berikut BUKAN bahantara tapakjalan C4?)
A.
B.
C.
D.
E.
18.
light dependent
light independent
ATP synthesis
carbon photophosphorylation
glycolysis
When a pigment reflects red light, _____
A.
B.
C.
D.
E.
21.
ribulose-1,5-bisphosphate and carbon dioxide are both substrates
the catalytic site has both carboxylase and oxygenase activity
it is found in the chloroplast stroma
it releases two molecules of glyceraldehydes-3-phosphate as products
it may be the most abundant enzymes in plants
The process of fixing carbon dioxide into carbohydrates occurs in the ____ process
A.
B.
C.
D.
E.
20.
phosphoenolpyruvate
oxaloacetate
malate
fumarate
all of the above
All are correct statements about RUBISCO except (Semua kenyataan berikut
mengenai RUBISCO adalah benar melainkan)
A.
B.
C.
D.
E.
19.
ribulose 1,5-bisphosphate
ribose 5-phosphate
xylulose 5-phosphate
3-phosphoglycerate
all colors of light are absorbed
all colors of light are reflected
green light is reflected, all others are absorbed
red light is reflected, all others are absorbed
red light is absorbed after it is reflected into the internal pigment molecules
The role of NADPH in photosynthesis is to _________
A.
B.
C.
D.
supply hydrogen to the carbohydrate
supply carbon to the carbohydrate
supply energy that can be used to form a carbohydrate
transfer oxygens from the third phosphate group to the carbohydrate
molecule
E. convert RuBP into PGA.
22.
The overall source of energy for photosynthesis is
A.
B.
C.
D.
E.
23.
energy of electron transport in the thylakoid membrane
energy released when water is oxidized and oxygen is produced
energy from the hydrolysis of atp
light energy from the sun
energy from fixation of CO2
The reaction,
Ribulose-5-phosphate + ATP  Ribulose-1,5-biphosphate + ADP is catalyzed by
A.
B.
C.
D.
E.
24.
After the CO2 fixation step in photosynthesis, the production of sugars takes place
A.
B.
C.
D.
E.
25.
thylakoid membranes associated with proteins
thylakoid spaces associated with rubisco
stroma
inner membrane space
Although the ratio of carboxylase to oxygenase activity of rubisco is about ____ to
one, the oxygenase activity diminishes plant productivity because of the loss of ____.
A.
B.
C.
D.
27.
as a reversal of glycolysis
as a reversal of the citric cycle
in the same manner as gluconeogenesis
as a reversal of the pentose phosphate pathway
none of the above
Chlorophyll is located in the ______ of the chloroplast.
A.
B.
C.
D.
26.
phosphopentose isomerase
phosphoribulose kinase
ribulose biphosphate carboxylase
phosphopentose epimerase
transketolase
one; rubisco
two; ribulose-5-phosphate
3-4; ribulose-1,5-bisphosphate
6-8; rubisco
Which of the following are products of the light reactions of photosynthesis that are
utilized in the Calvin cycle?
A.
B.
C.
D.
28.
CO2 and glucose
ATP and NADPH
ADP, Pi, and NADP+
electrons and H+
Where does the Calvin cycle take place?
A.
B.
C.
D.
stroma of the chloroplast
thylakoid membrane
cytoplasm surrounding the chloroplast
outer membrane of the chloroplast