Biology For Class IX - Chapter No.7 - BIOENERGETICS - MCQs and Fill In the Blanks

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CHAPTER 7
BIOENERGETICS

By Mrs. Ayesha Arif
(Jauhar Progressive School)

1. Encircle the correct answer:
i) In an oxidation process 14135 KJ energy is release, how many moles of glucose consume during this process.
(a) 1
(b) 3
(c) 5 ✔
(d) 10

(ii) Stage of aerobic respiration takes place at the cristae of mitochondria called:
(a) Electron transport chain ✔
(b) Glycolysis
(c) Kreb's cycle
(d) C3 cycle

(iii) In a process of cellular respiration 180 ATP molecules are produced, how many moles of glucose consume during this process.
(a) 2
(b) 5 ✔
(c) 8
(d) 10

(iv) Loss of electron and proton is called:
(I) Oxidation reaction
(II) Reduction reaction
(III) Redox reaction
(a) I only ✔
(b) I and II
(c) II and III
(d) I, II and III

(v) Each mole of ATP store energy:
(a) 7.3 kcal/mole ✔
(b) 7.3 kj/mole
(c) 17.3 kcal/mole
(d) 17.3kj/mole

(vi) Fundamental molecule produced during photosynthesis is:
(a) Glucose ✔
(b) Amino acid
(c) Fatty acid
(d) Nucleotide

(vii) Light dependent reaction takes place in:
(a) Stroma
(b) Thylakoid ✔
(c) Cristae
(d) Cisternae

(viii) Reaction in which solar energy is transferred to glucose from ATP and NADPH₂ , takes place in stroma called:
(I) Light reaction
(II) Dark reaction (III) Light dependent reaction
(a) I only
(b) II only ✔
(c) I and II
(d) II and III

(ix) Splitting of water in presence of light called:
(a) Hydrolysis
(b) Glycolysis
(c) Photolysis ✔
(d) None of these

(x) Splitting of glucose (glycolysis) release small amount of energy which is enough to generate:
(a) 2 ATP ✔
(b) 5 ATP
(c) 18 ATP
(d) 36 ATP

2. Fill in the blanks:
(i) The only source of energy on earth is Sun.
(ii) Conversion of free energy into different forms by living organisms is called bioenergetics.
(iii) In living organisms energy is stored in a special molecule called ATP.
(iv) Plant utilizes simple inorganic molecules (CO₂ and H₂O) to prepare glucose and oxygen.
(v) Feeding sequences and relationships are called food chains.
(vi) Photosynthesis is the only process which produces free O₂ by splitting water.
(vii) Chloroplast is double membrane bounded organelle have semifluid protein containing membrane called stroma.
(viii) In chloroplast different pigments absorb light of different wavelength.
(ix) The breakdown of food molecules to release energy is called respiration.
(x) Each mole of glucose produce maximum energy i.e.2827 Kj.

Source: Special Thanks To Sir Syed Arif Ali