Department of Education
Division of Cebu Province
BORBON NATIONAL HIGH SCHOOL
Poblacion, Borbon, Cebu
SENIOR HIGH SCHOOL
2nd DISTRICT SUMMATIVE ASSESSMENT
GENERAL BIOLOGY 1
Instruction: Read carefully the questions and choose the best answer. Utilize the answer sheet provided
by shading the letters of your chosen answers. Do not forget to indicate and shade your ROLL NUMBER.
No ROLL NUMBER means your scores will not be RECORDED.
1. The rate of photosynthesis is affected by all of the following except:
A. the amount of salt
B. light intensity
C. the availability of water
D. levels of CO2
2. What is the final electron acceptor during the light reaction?
A. ATP
C. FADH2
B. GDP
D. NADP+
3. Which of the following processes is directly driven by light energy?
A. ATP synthesis
B. reduction of NADP+ molecules
C. removal of electrons from chlorophyll molecules
D. creation of a pH gradient by pumping protons across the thylakoid membrane
4. A green plant is kept in a brightly lighted area for 48 hours. What will happen
if
the
plant is transferred to a dark room for 48 hours?
A. Photosynthesis will stop completely.
B. Glucose production inside each plant cell will increase.
C. The rate at which nitrogen is used by the plant will increase.
D. The rate at which oxygen is released from the plant will decrease.
5. What is the primary function of the light dependent reactions of photosynthesis?
A. to produce carbon dioxide
B. to produce ATP and NADPH
C. to convert light energy to glucose
D. to produce glucose from carbon dioxide and water
6. A student is collecting the gas given off from a plant in bright sunlight at a temperature of
27°C. The gas being collected is probably _________.
A. Oxygen
C. Glucose
B. ATP
D. Carbon Dioxide
7. What is the final electron acceptor during light dependent reactions?
A. ADP
B. ADP
C. FAD+
D. NADP+
8. What happens when chlorophyll is struck by sunlight?
A. Energy from fat molecules is released.
B. The chlorophyll molecule is broken into two parts.
C. The electrons in the chlorophyll molecule become energized.
D. A chemical reaction turns chlorophyll into high energy
carbohydrates.
9. Which molecule produced oxygen during light-dependent reactions?
A. CO
B. CO2
C.H2O
D.H3O+
10. How many times must the Calvin cycle turn to produce 10 glucose molecules?
A. 10
B. 120
C. 20
D. 60
11. Which complex is not involved in the establishment of conditions for ATP synthesis?
A. Photosystem 1
B. Photosystem II
C. ATP Synthase
D. Cytochrome complex
12. What is the initial electron donor in the light reactions?
A. ADP
B. H2O
C. NADP
D. O2
13. What gas is produced during photosynthesis?
A. oxygen B. carbon dioxide
C. vaporized water
D. carbon monoxide
14. From which component of the light-dependent reactions does NADPH form most directly?
A. Photosystem 1
B. Photosystem II
C. ATP Synthase
D. Cytochrome complex
15. How many molecules of PGAL are needed to reform 3 molecules of RuBP?
A.2
B. 3
C. 4
D. 5
16. What would be the effect if photosynthesis stops occurring throughout the world?
A. extinction of plants and animals
B. immediate decrease in atmospheric dioxide
C. alternating cooling and warming of the Earth
D. rapid increase in plant reproduction and proliferation
17. Which molecule must enter the Calvin cycle continually for the light independent
reactions to take place?
A. CO2
B. D.3-PGA
C. RuBisCO
D. RuBP
18. How many molecules of NADPH are needed to produce one molecule of
G3P?
A. 3
B. 6
C.9
D. 12
19. Which order of molecular conversions is correct for the Calvin cycle?
A. CO2 → 3-PGA → RuBP → G3P
B. RuBP + G3P → 3-PGA → sugar
C. RuBisCO → CO2 → RuBP → G3P
D. RuBP + CO2 → [RuBisCO]3-PGA → G3P
20. Which of the following does NOT occur during the Calvin cycle?
A. carbon fixation
C. oxidation of NADPH
B. release of oxygen
D. regeneration of the CO2 acceptor
21. How does the Calvin cycle differ from the light dependent reaction? Calvin cycle
________________ while light reaction __________________.
A. requires water; requires light
B. requires light; requires water
C. produces G3P; produces ATP and NADPH
D. takes place in the thylakoid; takes place in the stroma
22. Which gas enters the pineapple leaf at night?
A. oxygen B. carbon dioxide
C. vaporized water
D. carbon monoxide
23. Why does it take three turns of the Calvin cycle to produce G3P, the initial product of
photosynthesis? It occurs in order to
______________.
A. produce rubisco enzyme
B. produce ATP and NADPH for fixation of G3P
C. fix enough oxygen to export one G3P molecule
D. fix enough carbon to export one G3P molecule
24. What will happen to a plant leaf that loses CO2 too quickly? Photosynthesis will
_________________________________.
A. continue normally
C. decrease and then increase
B. increase exponentially
D. slow down or stop possibly
25. What would happen to the plant’s production of glucose if carbon
dioxide is removed
from a plant’s environment?
A. More glucose molecules will be produced.
B. Fewer glucose molecules will be produced.
C. The plants will not produce any glucose at all.
D. The same number of glucose molecules will be produced.
27. How many molecules of CO2 are needed to produce one molecule of glucose?
A. 6
B. 8
C. 10
D. 12
26. During photosynthesis, carbon dioxide (CO2), and water (H2O) combines
to
yield
glucose (C6H12O6) and oxygen (O2). What is the balanced
chemical equation for this
reaction?
A. CO2 + H2O
B. 6H2O
C6H12O6
C. 6CO2 + 6H2O
C6H12O6 + O2
C6H12O6 + 6O2
D. 6H2O + 6CO2
C6H12O6 +6 O2
30 h
28. A biology student grew algae in the presence of a poisonous substance that stops the
light independent reactions of photosynthesis. Which molecules will the light dependent
reactions stop producing?
A. ADP and NADP+
C. ATP and NADP+
B. ADP and NADPH
D. ATP and NADPH
29. Which stage of the Calvin cycle will require both ATP and NADPH from the light dependent
reactions?
A. regeneration of RuBP
C. carbon dioxide fixation
B. cyclic electron pathway
D. carbon dioxide reduction
30. What is the role of rubisco in the Calvin cycle?
A. phosphorylates ADP forming ATP
B. regenerates Ribulose biphosphate
C. attaches CO2 to Ribulose biphosphate
D. reduces PGA to 1-3 biphosphoglycerate
31-35. Using the labeled diagram of a chloroplast, write the letter that indicates the given
structure.
31.thylakoid
____
32.outer membrane ____
33.lamella
____
34.inner membrane ____
35.stroma
____
Figure 1: Chloroplast
36. Which color of light is least effective in driving photosynthesis?
A. Blue and red, because it is mostly absorbed.
B. Green, because it is mostly transmitted and reflected.
C. Violet, because it has the most energy due to its shorter wavelength.
D. cannot be determined
37.What happens to an electron when a pigment absorbs light? It goes from a/ an ____________.
A. excited state to a ground state, which is stable
B. ground state to an excited state, which is stable
C. excited state to a ground state which is unstable
D. ground state to an excited state, which is unstable
38. Which pigment absorbs excessive light that might damage chlorophyll?
A. chlorophyll α
B. chlorophyll ƅ
C. carotenoid
D. all choices given
39. What organelle is responsible for photosynthesis in plants and algae?
A. cell membrane
B. chloroplast
C. chlorophyll
D. mitochondria
40. Which leaf tissue does photosynthesis occur due to its abundance of chloroplast?
A. mesophyll
B. palisade
C. phloem
D. xylem
-Good Luck-
Prepared by:
Reviewed by:
Sychelle Jean D. Belleza
Arsenio M. Pacaldo
SHS-T2
BNHS-
SHS Coordinator
Quality Assured by:
Renelyn R. Gagarino
Asst. School Principal 2
-Answer Key1. a
7. d
13. a
19. d
25. c
31. b
37. a
2. d
8. c
14. a
20. b
26. a
32. a
38. c
3. c
9. c
15. d
21. c
27. d
33. c
39. b
4. a
10. d
16. a
22. b
28. b
34. e
40. b
5. b
11. b
17. a
23. d
29. c
35. d
6. a
12. b
18. d
24. d
30. c
36. b