1. Where do light-dependent reactions of
photosynthesis occur?
a.
in
the guard cell of the stomata
b.
in
the chloroplast of stroma
c.
within
the thylakoid membranes of the chloroplast
d.
in
the leaf cell cytoplasm
2. The oxygen produced during photosynthesis
comes from
a.
the
breakdown of CO2.
b.
the
breakdown of water.
c.
the
breakdown of both CO2 and water.
d.
the
breakdown of oxaloacetic acid.
3. Photosynthesis is measured in the leaf of a
green plant exposed to different wavelengths of light. Photosynthesis is
a.
highest
in green plants.
b.
highest
in red light.
c.
highest
in blue light.
d.
highest
in red and blue light.
4. Where do the light-independent, carbon-fixing
reactions occur?
a.
in
the guard cell cytoplasm
b.
in
the chloroplast stroma
c.
within
the thylakoid membrane
d.
at
night in the thylakoids
5. Oxygen and carbon dioxide are gases that
cycle out in the ecosystem. Which of the following gases is important to
photosynthesis?
a.
ozone gas c.
oxygen
b. water vapor d.
carbon dioxide
6. The light-dependent reaction of
photosynthesis must come first before the light independent reaction because
its products are important to the fixation of carbon dioxide. Which of the following is/are the product/s
of the light–dependent reaction?
a. ADP only c. ATP
only
b. NADPH only d. NADPH and
ATP
7. Plants are very unique among other organisms
due to their capability to trap sunlight and make their own food. Which of the following enables plants to trap
energy from the sun?
a. epidermis c.
cuticle
b. chloroplast d.
chlorophyll
8. Plants make food by absorbing water and
carbon dioxide. Which of the following substances is the origin of oxygen
released as gas by green plants during photosynthesis?
a. water c. carbon dioxide
b. sugar d.
ribulose-1,5-biphosphate
9. The role of accessory pigment is to
a.
provide
an additional photosystem to generate more ATP.
b.
allow
photosynthesis to occur in the dark.
c.
donate
electrons to cholophyll reaction centers.
d.
capture
additional light energy and transfer it to the chlorophyll reaction centers.
10. The generation of ATP by electron transport in
photosynthesis and cellular respiration depends upon
a.
a
proton gradient across a membrane.
b.
proton
pumps driven by electron transport chains.
c.
an
ATP synthesizing enzymes complex.
d.
a,
b, c, are all required for ATP generation.
11. A farmer is experiencing a problem in growing
his crops. Most of the leaves of the crops are turning yellow. Which of the
following will likely result from the yellowing of the leaves of the crops?
a. It will increase
the production of food.
b. It will decrease
the production of food.
c. The production
of food will remain the same.
d. None
of the above.
12. Which of the following materials are
cycled out by the chloroplast and mitochondrion?
a. Carbon dioxide,
water, oxygen, and ATP
b. Carbon dioxide, water, sugar and
oxygen
c. Sugar, water, oxygen, and ATP
d. Sugar, water, sunlight, and oxygen
13. Where does glycolysis occur?
a.
Cytoplasm
b.
Matrix
of mitochondria
c.
Inner
membrane of mitochondria
d.
Outer
membrane of mitochondria
14. Where does respiratory electron transport
occur?
a.
Cytoplasm
b.
Matrix
of mitochondria
c.
Inner
membrane of mitochondria
d.
Outer
membrane of mitochondria
15. What are the economically important products
of the fermentation of grape juice by yeast that are essential for the
manufacture of champagne?
a.
Lactic
acid and NAD+ c. ATP and CO2
b.
ATP
and ethanol d. CO2 and ethanol
16. The majority ATP produced in aerobic
respiration comes from
a.
Glycolysis.
b.
the
electron transport system.
c.
the
citric cycle.
d.
Fermentation.
17. Pyruvate is the product of glycolysis. If
there is no oxygen available to cells of the human body, what becomes of
pyruvate?
a. alcohol c.
CO2
b. lactic acid d. a and
c
18. How many molecule/s of carbon dioxide is/are
released from one pyruvic acid molecule being oxidized?
a. 1 b. 3 c. 2 d.
4
19. Oxygen is essential in cellular respiration.
What is the role of oxygen in the electron transport chain?
a. It provides a high energy proton. c. It serves as the final
acceptor.
b. It releases
an electron. d.
It forms water.
20. The process that converts glucose into two
molecules of pyruvate is
a.
glycolysis c. the citric acid cycle
b.
fermentation d. electron transport chain
21. What will happen if ATP and NADPH are already
used up at night?
a. Less oxygen will be produced. c. Glucose production will
stop.
b. Less carbon dioxide will be used. d. Water molecule will split to
form
electrons.
22. Which of the following best explains why
planting trees and putting up urban gardens can help prevent global warming?
a. Plants produce oxygen during day time
and perform transpiration.
b. Plants absorb carbon dioxide that
contributes to the rising of earth’s temperature.
c. Plants perform photosynthesis.
d. Plants use up carbon dioxide during
photosynthesis, release oxygen to the environment, and perform transpiration.
23. Sugarcane juice is used in
making table sugar which is extracted from the stem of the plant. Trace the
path of sugar molecules found in the stem from where they are produced.
a. Root ---- stem c. flowers ----
leaf ----stem
b. Leaf ----- stem d. roots ---
leaf ---- stem
24. What happens to the
Hydrogen carried to the electron transport chain?
a. It ends up as water c.
It is recycled to Glycolysis
b. It forms lactate d.
It forms methane
ANSWERS KEY:
1. d
2. b
3. d
4. b
5. d
6. d
7. d
8. a
9. d
10. d
11. b
12. b
13. a
14. c
15. d
16. b
17. b
18. c
19. c
20. a
21. c
22. d
23. b
24. a
Ha
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