61. The link between Glycolysis and Krebs cycle is

A Citric acid
B Malic acid
C Fumaric acid
D Acetyl co-enzyme
Answer :   Acetyl co-enzyme
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62. Pyruvic acid before combining with oxaloaceitc acid of Kerbs cycle, becomes

A Ctric acid
B Acetoacetric acid
C Cis-aconitic acid
D Acetyl CoA
Answer :   Acetyl CoA
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63. Acceptor of acetyl CoA in Kreb's cycle is

A Malic acid
B Fumaric acid
C -ketoglutaric acid
D Oxalo acetic acid
Answer :   Oxalo acetic acid
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64. Enzyme inhibition caused by a substrate analog is

A Competitive
B Non competitive
C In competitive
D Semi - competitive
Answer :   Competitive
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65. Glycolysis takes place in

A Cytoplasm
B Nucleus
C Plastid
D Mitochondria
Answer :   Cytoplasm
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66. Which of the following enzyme is not used in krebs' cycle

A Aconitase
B Decarboxylase
C Aldolase
D Fmarase
Answer :   Aldolase
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67. Which of the following coenzyme is a derivative of pantothenic acid (vitamin B complex) ?

A NAD
B NADP
C FAD
D Co-A
Answer :   Co-A
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68. Pyruvic acid is the end product of

A Kerb's cycle
B Electron transport system
C Photosynthesis
D Glycolysis
Answer :   Glycolysis
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69. The energy-releasing process in which the substrate is oxidised without an external electron acceptor is called

A fermentation
B photorespiration
C aerobic respiration
D glycolysis
Answer :   glycolysis
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70. Which 5-carbon organic acid of TCA-cycle is key compound in N2-metabolism

A Critic acid
B Fumaric acid
C OSA
D -ketoglutaric acid
Answer :   -ketoglutaric acid
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