Chapter 9: Photosynthesis
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  • Question 1
    30 seconds
    Q. Where do the light-dependent reactions occur? 
    answer choices
    thylakoid membrane
    stroma
    mesophyll
    mitochondria
  • Question 2
    30 seconds
    Q. What is the primary function of the light reactions of photosynthesis?
    answer choices
    To produce glucose
    To produce NADPH and ATP
    To use ATP
    To produce RuBP
  • Question 3
    30 seconds
    Q. Which of the following is NOT a product of the light reactions?
    answer choices
    ATP
    NADPH
    Oxygen
    Glucose
  • Question 4
    30 seconds
    Q. What does ATP synthase do?
    answer choices
    Create ATP in chemiosmosis.
    Break down ATP in chemiosmosis.
    Break down NADPH. 
    Create NADPH.
  • Question 5
    30 seconds
    Q. What supplies the electrons that are lost in PS I?
    answer choices
    the electrons from PS II
    water
    glucose
    oxygen
  • Question 6
    60 seconds
    Q. What is the function of NADP+?
    answer choices
    It absorbs light
    It is an electron carrier
    It is a light-reflecting pigment
    It acts as long-term energy storage
  • Question 7
    60 seconds
    Q. Which substance from the light-dependent reactions of photosynthesis is a source of energy for the light-independent reactions?
    answer choices
    ADP
    H2O
    NADPH
    pyruvic acid
  • Question 8
    30 seconds
    Q. The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
    answer choices
    RuBisCo
    PEP Carboxylase
    Hexokinase
    Pyruvate DeHydrogenase
  • Question 9
    30 seconds
    Q. In the Calvin Cycle, carbohydrate molecules are:
    answer choices
    Reduced
    Oxidized
  • Question 10
    30 seconds
    Q. The loss of H2O through stomata is referred to as:
    answer choices
    Transpiration
    Respiration
    Evaporation
    Photorespiration
  • Question 11
    30 seconds
    Q. Carbon fixation in CAM plants occurs during the:
    answer choices
    Day
    Night
  • Question 12
    30 seconds
    Q. The main problem encountered by C3 plants in hot conditions is:
    answer choices
    Transpiration
    PhotoRespiration
    Dehydration
    Starvation
  • Question 13
    30 seconds
    Q. Which of the following molecules is not needed for the Calvin Cycle?
    answer choices
    CO2
    ATP
    NADPH
    H2O
  • Question 14
    30 seconds
    Q. The molecule that comes out of the Calvin Cycle to produce glucose, and polymers like cellulose is:
    answer choices
    RuBP
    GP3
    3-PG
    G3P
  • Question 15
    30 seconds
    Q. What is the name of a pigment-containing complex found in a thylakoid?
    answer choices
    chlorophyll a
    photosystem
    grana
    stroma
  • Question 16
    30 seconds
    Q. Green plants reflect ________ light.
    answer choices
    Red
    Green
    All
    Red and Violet
  • Question 17
    30 seconds
    Q. The light reactions occur in the ________ and the dark reactions take place in the ________.
    answer choices
    Chloroplast / thylakoid membrane
    stroma / thylakoid
    mesophyl / stomata
    thylakoid membrane / stroma
  • Question 18
    30 seconds
    Q. Where does the carbon come from that is used to form glucose?
    answer choices
    The soil
    CO2 in the air
    From other carbohydrates
    Calvin Cycle
  • Question 19
    30 seconds
    Q. Where is glucose synthesized
    answer choices
    Photosystem II
    Photosystem I
    Calvin Cycle
    Glycolysis
  • Question 20
    30 seconds
    Q. Since we're building a carbohydrate in the Calvin Cycle, is the process endergonic or exergonic and why?
    answer choices
    Endergonic because carbohydrate production is catabolic
    Exergonic because carbohydrate production is anabolic
    Endergonic because carbohydrate production is anabolic.
    Exergonic because carbohydrate production is catabolic
  • Question 21
    60 seconds
    Q. Organisms, such as plants, that make their own food are called
    answer choices
    autotrophs
    heterotrophs.
    thylakoids.
    pigments.
  • Question 22
    60 seconds
    Q. Energy is released from ATP when
    answer choices
    a phosphate group is added.
    adenine bonds to ribose.
    ATP is exposed to sunlight.
    a phosphate group is removed.
  • Question 23
    30 seconds
    Q. Which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?
    answer choices
    CO2 and glucose
    H2O and O2
    electrons and H+
    ATP and NADPH
  • Question 24
    30 seconds
    Q. Where does the Calvin cycle take place?
    answer choices
    stroma of the chloroplast
    thylakoid membrane
    outer membrane of the chloroplast
    interior of the thylakoid membrane
  • Question 25
    30 seconds
    Q. When oxygen is released as a result of photosynthesis, it is a direct by-product of
    answer choices
    reducing NADP+
    splitting water molecules
    chemiosmosis
    electron transfer in photosystem II and I
  • Question 26
    30 seconds
    Q. Which of the following events occurs in the light reactions of photosynthesis?
    answer choices
    NADP+ is produced
    ATP is consumed to yield ADP
    carbon dioxide is fixed in organic molecules
    light is absorbed and funneled to reaction-center chlorophyll a
  • Question 27
    30 seconds
    Q. Which of the following is directly associated with Photosystem I?
    answer choices
    harvesting light energy to make ATP
    receiving electrons from the thylakoid membrane ETC
    generation of molecular oxygen
    extraction of hydrogen electrons from the splitting of water
  • Question 28
    30 seconds
    Q. What is the primary function of cyclic electron flow?
    answer choices
    to produce additional NADPH
    to produce additional ATP
    to produce additional oxygen
    to produce additional carbon dioxide
  • Question 29
    30 seconds
    Q. Which of the following statements about the relationship between photosynthesis and cellular respiration is true?
    answer choices
    In cellular respiration the biochemical pathways of photosynthesis run in reverse.
    In photosynthesis the biochemical pathways of cellular respiration run in reverse.
    Cellular respiration occurs only in animals and photosynthesis occurs only in plants.
    Cellular respiration is catabolic and photosynthesis is anabolic.
  • Question 30
    30 seconds
    Q. What is the primary function of the Calvin cycle?
    answer choices
    regenerate ATP for use in the light reactions of photosynthesis
    produce carbon dioxide for use in the light reactions of photosynthesis
    produce oxygen by oxidizing water
    produce simple sugars from carbon dioxide
  • Question 31
    30 seconds
    Q. Reactions that consume CO2 take place in
    answer choices
    the light reactions of photosynthesis only
    the calvin cycle only
    the light reactions and the calvin cycle
    the calvin cycle and the citric acid cycle
  • Question 32
    45 seconds
    Q. Which of the following statements best represents the relationships between the light reactions and the Calvin cycle?
    answer choices
    The light reactions provide ATP and NADPH to the Calvin cycle, and the Calvin cycle returns ADP, ℗i, and NADP+ to the light reactions.
    The light reactions provide ATP and NADPH to the carbon fixation step of the Calvin cycle, and the Calvin cycle provides water and electrons to the light reactions.
    The light reactions supply the Calvin cycle with CO2 to produce sugars, and the Calvin cycle supplies the light reactions with sugars to produce ATP.
    The light reactions provide the Calvin cycle with oxygen for carbon fixation, and the Calvin cycle provides the light reactions with sugars to produce ATP.
  • Question 33
    60 seconds
    Q. Beyond Basics:  The splitting/breaking of water 
    answer choices
    occurs during Cellular Respiration
    is called hydrolysis
    produces oxygen, electrons and hydrogens
    occurs during fermentation
  • Question 34
    60 seconds
    Q. Beyond Basics:  Carbon fixation
    answer choices
    is part of the Krebs Cycle
    is part of the Calvin Cycle
    is part of the ETC
    is part of the Light Reactions
  • Question 35
    60 seconds
    Q. Beyond Basics:  Electrons become energized during photosynthesis when 
    answer choices
    they are absorbed by water
    they undergo carbon fixation
    they are struck with light energy
    they are incorporated into oxygen
  • Question 36
    30 seconds
    Q. The main source of energy for all life comes from ____.
    answer choices
    the Earth
    the moon
    the sun
    the food we eat/make
  • Question 37
    120 seconds
    Q. Which of the following is the correct equation for PHOTOSYNTHESIS?
    answer choices
    6CO2 + 6H2O --> 6O+ C6H12O6
    6CO+ C6H12O6 + 6H2O --> O
    6O2 + 6H2O --> 6CO+ C6H12O6
    C6H12O6 + 6O2 ---> 6H2O + 6CO2 
  • Question 38
    900 seconds
    Q. Why is photosynthesis important?
    answer choices
    creates oxygen for animals to breath
    creates energy for heterotrophs to use
    creates food for plants to use
    all of these are correct
  • Question 39
    30 seconds
    Q. Which plant structure is extremely necessary for photosynthesis to take place?
    answer choices
    leaves
    flower petals
    anthers
    pistils
  • Question 40
    30 seconds
    Q. What is another name for glucose?
    answer choices
    Chlorophyll
    Chloroplasts
    Stomata
    Sugar
  • Question 41
    30 seconds
    Q. Where does carbon dioxide enter plants>
    answer choices
    The leaves
    Stomata
    Roots
    Stem
  • Question 42
    30 seconds
    Q. What does photo mean?
    answer choices
    Print
    Picture
    Make
    Light or Color
  • Question 43
    30 seconds
    Q. What does synthesis mean?
    answer choices
    Photo
    Make
    Light
    Color
  • Question 44
    30 seconds
    Q. Where does a plant absorb the water that it uses during photosynthesis?
    answer choices
    Leaves
    Stem
    Roots
    Petals
  • Question 45
    120 seconds
    Q. In which organelle (part of the cell) does photosynthesis take place?
    answer choices
    mitochondria
    chloroplast
    nucleus
    cell membrane
  • Question 46
    180 seconds
    Q. Most plants appear green because chlorophyll
    answer choices
    absorbs green light.
    absorbs violet light.
    does not absorb green light.
    does not absorb violet light.
  • Question 47
    60 seconds
    Q. Which gas is removed from the atmosphere during photosynthesis?
    answer choices
    hydrogen
    oxygen
    nitrogen
    carbon dioxide
  • Question 48
    30 seconds
    Q. What gas is released by plants during photosynthesis?
    answer choices
    sulfur
    carbon dioxide
    oxygen
    hydrogen
  • Question 49
    30 seconds
    Q. How can photosynthesis be related to cellular respiration?
    answer choices
    What's produced (made) by one is needed (the reactants) for the other
    They both produce the same products
    They both have the same reactants (need the same things)
    These 2 processes have nothing in common
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