Download Photosynthesis Mini-Test

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SBI 4U/AP
_____
Ms. Girvan
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Name: ________________________
Date: ___________________
Photosynthesis Mini-Test 2013 (Mock)
Part I: True/False. Indicate whether the statement is true or false.
(7 marks)
_____ 1. In green plants, photosystem I and II are required for the synthesis of
NADPH.
_____ 2. Photosynthesis is a redox process; that is, H2O is reduced and CO2 is
oxidized.
_____ 3. The enzymes required for CO2 fixation in plants are located only in the
thylakoid membrane.
_____ 4. Increasing in light intensity will cause the rate of photosynthesis to
increase
indefinitely.
_____ 5. ATP synthesis in chloroplasts occurs in the stroma.
_____ 6. Green plants absorb blue and orange light.
_____ 7. C4 photosynthesis is so named because is produces a four carbon
molecule as
the first stable product of carbon fixation.
Part II: Multiple Choice. (7 marks)
1. Which of the following are raw materials for photosynthesis?
a) oxygen and water
b) carbon dioxide and water
c) glucose and oxygen
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d) oxygen and carbon dioxide
2. When does the process of splitting water to release hydrogen ions, electrons
and oxygen occur?
a) during the light reactions
b) during the Calvin cycle
c) during photorespiration
d) during carbon fixation
3. When does the process of incorporating the carbon of carbon dioxide into
carbohydrates occur?
a) during the light reactions
b) during the Calvin cycle
c) during photorespiration
d) during carbon fixation
4. What is the term for an individual flattened membrane-bound sac in the
chloroplast?
a) granum
b) stroma
c) thylakoid
d) matrix
5. During the light-dependent reactions, the high energy electron from an excited
photosystem I
a) eventually moves to NADP+
b) becomes incorporated into water molecules
c) is pumped into the thylakoid space to drive ATP production
d) falls back to the low-energy state in photosystem II.
6. In chemiosmosis, the diffusion of hydrogen ions across a membrane in the
organelle occurs through passageways created by
a) NADPH
b) ATP
c) ATP synthase
d) Rubisco
7. What is the function of RuBP in the Calvin cycle?
a) to accept a proton
b) to generate ATP
c) to release carbon dioxide
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d) to accept carbon dioxide
Part III: Short Answer (11 marks)
1. Draw a labeled diagram of a chloroplast and show where the following
substances would be found: newly formed ATP produced by chemiosmosis,
rubisco, newly formed G3P, photosystem I. (4 marks, ½ each)
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2. Some old biology textbooks call the carbon fixation reactions of
photosynthesis the ‘dark reactions”/
a) Why did they use this term? (1 mark)
b) Why is it misleading? (1 mark)
3. Name the three phases of the Calvin cycle, and state the main function of each
phase. (3 marks)
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4. Why are C4 plants more efficient photosynthesizers than C3 plants? (2 marks)