AP Bio: Photosynthesis
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  • Question 1
    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
    ATP and NADPH
    ADP, P and NADP+
    H2Oand O2
  • Question 2
    30 seconds
    Q. Where does the Calvin cycle take place?
    answer choices
    Stroma
    thylakoid
    thylakoid space
    matrix
  • Question 3
    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 1
  • Question 4
    30 seconds
    Q. A plant has reddish leaves.  What wavelengths of visible light are being absorbed by this pigment
    answer choices
    red, yellow
    blue, violet
    green, yellow
    blue, green, yellow
  • Question 5
    30 seconds
    Q. What is the main role of the pigment molecules in a light-harvesting complex in the thylakoid membranes?
    answer choices
    split water and release oxygen to te reaction-center chloropyll
    transfer light energy to the reaction-center chlorophyll
    synthesize ATP
    transfer electrons to NADPH
  • Question 6
    30 seconds
    Q. Which of the following processes could still occur in a chloroplast in the presence of an inhibitor that prevents H+ from passing through ATP synthasecomplexes?
    answer choices
    photophosphorylation
    Calvin cycle
    oxidation of NADPH
    generation of proton-motive force
  • Question 7
    30 seconds
    Q. T or F: Autotrophs, but not heterotrophs, can nourish themselves beginning with carbon dioxide and other nutrients that are entirely organic
    answer choices
    True
    False
  • Question 8
    30 seconds
    Q. T or F: Chemiosmosis is unique to noncyclic photophophorylation.
    answer choices
    True
    False
  • Question 9
    30 seconds
    Q. Which of the following processes is most directly driven by light energy?
    answer choices
    carbon fixation in stroma
    reduction of NADP molecules
    ATP Synthesis
    removal of electrons from membrane-bound chlorophyll molecules
  • Question 10
    30 seconds
    Q. In what respect are the photosynthetic adaptations of C4 plants and CAM plants similar?
    answer choices
    an enzyme other than Rubisco carries out the first step in carbon fixation 
    both types of plants make most of their sugar in the dark
    both types of plants make their sugar without the Calvin cycle
    Stomata normally close during the day
  • Question 11
    30 seconds
    Q. T or F: The light reactions of photosynthesis suppley the calvin cyucle with ATP and NADPH
    answer choices
    True
    False
  • Question 12
    30 seconds
    Q. What is the relationship between wavelngth of light and the quanitity of energy per photon?
    answer choices
    direct, linear relationship
    inversely related
    logarithmically related
    only related in certain parts of the spectrum
  • Question 13
    30 seconds
    Q. The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during ______
    answer choices
    photosynthesis
    respiration
    neither photosynthesis or respiration
    both photosynthesis and respiration
  • Question 14
    30 seconds
    Q. T or F: In photosynthetic cells, the electron transport chains are located in the thylakoid membranes and mitochondrial inener membranes.
    answer choices
    True
    False
  • Question 15
    30 seconds
    Q. T or F: Photosynthesis is anabolic and Cellular respiration is catabolic
    answer choices
    True
    False
  • Question 16
    30 seconds
    Q. In chemiosimosis in mitochondria, protons flow from the intermembrane space into the matrix, whearas in chemiosimosis in chloroplast, protons flow from __________
    answer choices
    the thylakoid space to the stoma
    the stoma to the thylakoid space
    the matrix into the stoma
    the stoma into the cytosol
  • Question 17
    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
    light is absorbed and funneled to  chlorophyll a
    carbon dioxide is fixed in organic molecules
  • Question 18
    30 seconds
    Q. ________________ cells in leaves are specialized for photosynthesis.
    answer choices
    mesophyll
    schlerenchyma
    tracheid
    collenchyma
  • Question 19
    30 seconds
    Q. T or F: Photorespiration lowers the efficiency of photosynthesis by removing RuBP molecules from the Calvin cycle.
    answer choices
    True
    False
  • Question 20
    30 seconds
    Q. Which of the following activities is associated with photosystem II?
    answer choices
    light energy excites electrons in the thylakoid membrane ETC
    electrons released from P680 are replaced by electrons derived from water
    P680 donates a pair of electron to NADP+
    electrons are passed from P680 to molecular oxygen
  • Question 21
    30 seconds
    Q. The color of light least effective in driving photosynthesis is _________
    answer choices
    blue
    red
    orange
    green
  • Question 22
    30 seconds
    Q. Cyclic electron flow in the cloroplast produces________
    answer choices
    ATP
    NADPH
    both ATP and NADPH
    glucose
  • Question 23
    30 seconds
    Q. Why are C4 plants able to photosynthesize with no apparent photorespiration?
    answer choices
    they do not participate in the Calvin cycle
    they use PEP carboxylase to initially fix carbon dioxide
    they conserve water more efficiently
    they exclude oxygen from their tissues
  • Question 24
    30 seconds
    Q. T or F: CAM plants  keep their stomates closed in daytime and fix carbon dioxide during the night , thus reducing loss of water.
    answer choices
    True
    False
  • Question 25
    30 seconds
    Q. T or F: The light reactions of Photosynthesis requires ATP.
    answer choices
    True
    False
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