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11th Standard Botany - Respiration English Medium Free Online Test One Mark Questions with Answer Key 2020 - 2021

11th Standard

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Botany

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. During oxidation of two molecules of cytosolic NADH + H+, number of ATP molecules produced in plants are

    (a)

    3

    (b)

    4

    (c)

    6

    (d)

    8

  2. In Pulses RQ will be

    (a)

    One

    (b)

    less than one

    (c)

    more than one

    (d)

    zero

  3. Which of the following electron carrier is not involved in mitochondrial electron transport chain?

    (a)

    Ubiquinone

    (b)

    cytochrome b6

    (c)

    cytochrome c

    (d)

    cytochrome a3

  4. Which ofthe following sentence is correct if RQ is less than unity in respiration

    (a)

    Carbohydrates are used as respiratory substrate. 

    (b)

    The oxidation of the respiratory substrate consumed more O2 than the amount of CO2 released.

    (c)

    Organic acids are used as respiratory substrate.

    (d)

    In CAM plants respiratory quotient is always less than unity.

  5. Much of the energy released during oxidation of pyruvate in TCA cycle is initially stored in the form of

    (a)

    reduced coenzymes

    (b)

    oxidised coenzymes

    (c)

    ATP molecules

    (d)

    none of the above

  6. The energy released by ATP on hydrolysis is____________.

    (a)

    7.6 kcal

    (b)

    7.3 kcal

    (c)

    7 kcal

    (d)

    6.8 kcal

  7. The _______________enzyme of krebs cycle is not found in mitochondrial matrix.

    (a)

    Succinate dehydrogenase

    (b)

    Fumarase

    (c)

    Citric acid dehydrogenase

    (d)

    Malate dehydrogenase

  8. The RQ for a______________substrate is 1.

    (a)

    fat

    (b)

    Carbohydrate

    (c)

    oil

    (d)

    protein

  9. Link reaction refers to the following.

    (a)

    ATP ⟶ ATP

    (b)

    Pyruvic acid ⟶ Acetyl CoA

    (c)

    Acetyl CoA ⟶ citric acid

    (d)

    Glucose ⟶ pyruvic acid

  10. F1 particles are called______________.

    (a)

    quantosome

    (b)

    cytochromes

    (c)

    oxysome

    (d)

    Osmosomes

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