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MCQs

Total Questions : 211 | Page 18 of 22 pages
Question 171. A mobile, lipid soluble carrier of two electrons present in chloroplasts is
  1.    PQʙ
  2.    Q
  3.    Cytochrome c
  4.    Plastocyanin
 Discuss Question
Answer: Option A. -> PQʙ
Answer: (a).PQʙ
Question 172. A water-soluble protein that carries one electron present in mitochondria is
  1.    PQʙ
  2.    Q
  3.    Cytochrome c
  4.    Plastocyanin
 Discuss Question
Answer: Option C. -> Cytochrome c
Answer: (c).Cytochrome c
Question 173. Cyanobacteria does not use which of the following for both oxidative and photophosphorylation?
  1.    Cytochrome c₆
  2.    Cytochrome b₆f
  3.    Plastoquinone
  4.    Plastocyanin
 Discuss Question
Answer: Option D. -> Plastocyanin
Answer: (d).Plastocyanin
Question 174. A mobile, lipid soluble carrier of two electrons present in mitochondria is
  1.    PQʙ
  2.    Q
  3.    Cytochrome c
  4.    Plastocyanin
 Discuss Question
Answer: Option B. -> Q
Answer: (b).Q
Question 175. A water-soluble protein that carries one electron present in chloroplast is
  1.    PQʙ
  2.    Q
  3.    Cytochrome c
  4.    Plastocyanin
 Discuss Question
Answer: Option D. -> Plastocyanin
Answer: (d).Plastocyanin
Question 176. Why light is required for light dependent reactions?
  1.    It splits ATP molecules which generates the energy necessary to power the light independent reactions
  2.    It is the source for electrons
  3.    It splits the water molecules
  4.    It energizes electrons in the reaction center
 Discuss Question
Answer: Option D. -> It energizes electrons in the reaction center
Answer: (d).It energizes electrons in the reaction center
Question 177. Which of the following is the correct sequence for the movement of electrons during the light-dependent reactions of plants?
  1.    P₇₀₀, P₆₈₀, NADP⁺, water
  2.    P₆₈₀, water, P₇₀₀, NADP⁺
  3.    Water, P₇₀₀, NADP⁺, P₆₈₀
  4.    Water,P₆₈₀, P₇₀₀, NADP⁺
 Discuss Question
Answer: Option D. -> Water,P₆₈₀, P₇₀₀, NADP⁺
Answer: (d).Water,P₆₈₀, P₇₀₀, NADP⁺
Question 178. The pigment used in human vision is
  1.    Retinal
  2.    Vitamin A
  3.    Ferredoxin
  4.    Beta-carotene
 Discuss Question
Answer: Option A. -> Retinal
Answer: (a).Retinal
Question 179. If 8 photons are required to produce one molecule of O₂, how many photons are required to produce one molecule of glucose?
  1.    6
  2.    8
  3.    48
  4.    12
 Discuss Question
Answer: Option C. -> 48
Answer: (c).48
Question 180. When compared to retinal, chlorophyll can be described as a pigment that has a
  1.    Narrow absorption range but high efficiency
  2.    Narrow absorption range but low efficiency
  3.    Wide absorption range but high efficiency
  4.    Wide absorption range but low efficiency
 Discuss Question
Answer: Option A. -> Narrow absorption range but high efficiency
Answer: (a).Narrow absorption range but high efficiency

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