Bio - Energetics — Biology MCQs (Class 11)
Free chapter-wise Biology MCQs with answers for MDCAT, FSc and entry tests.
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#25 Which one of the following bond is broken first in glycolysis to release the energy?
A) Glycosidic
B) Peptide
C) Ester
D) None of the above
#26 The number of ATP formed directly by a single Krebs cycle is:
A) One ATP
B) Two ATP
C) 32 ATP
D) 36 ATP
#27 Mitochondria are the sites of:
A) Electron transport chains
B) Photophosphorylation
C) Krebs cycle
D) Glycolysis
#28 During cellular respiration NADH2 produces:
A) 2 ATP
B) 3 ATP
C) 4 ATP
D) 5 ATP
#29 Each molecule of NADH entering the electron transport chain produces:
A) Four ATPs
B) Two ATPs
C) One ATPs
D) Three ATPs
#30 6-NADH can yield:
A) 12-ATP
B) 38-ATP
C) 18-ATP
D) 36-ATP
#31 What happens to oxygen in the electron transfer chain in respiration?
A) It is released as gas
B) It forms CO2
C) It is reduced to water
D) It is used as an electron carrier
#32 Photorespiration involved the following reaction which occurs in the sequence of:
A) Glycolate → Glycine, Glycine → Serine + CO2, RuBP + O2 → Glycolate
B) RuBP + O2 → Glycolate, Glycine → Serine + CO2, Glycolate → Glycine
C) RuBP + O2 → Glycolate, Glycolate → Glycine, Glycine → Serine + CO2
D) Glycine → Serine + CO2, RuBP + O2 → Glycolate, Glycolate → Glycine
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