NEET Test Respiration in plant | Cha -14 STD -11 | BIOLOGY | English medium
1. Which of the following step in glycolysis is energy conserving phase ?
( a ) Phosphorylation of glucose ( b ) Substrate level phosphorylation
( c ) Isomerisation of DHAP ( d ) Synthesis of fructose 6 - phosphate
2. In which of the following steps in Krebs ' cycle NAD does not participate as electron acceptor ?
( a ) Isocitrate to oxalo - succinate
( b ) a - ketoglutarate to succinyl COA
( c ) Succinate to fumarate
( d ) Malate to oxaloacetate
3. Glycolysis consumes............ ATP molecules for the initial phosphorylation of substrate molecule .
( a ) two ( b ) three ( c ) one ( d ) six
4 . Pentose phosphate pathway is also known as
( a ) EMP pathway ( b ) hexose monophosphate shunt
( c ) link reaction ( d ) all of these .
5. Which enzyme will be required to complete the following reaction ?
Fructose 6 - phosphate + ATP → Fructose 1,6 - biphosphate + ADP
( a ) Fructokinase ( b ) Triose phosphate isomerase
( c ) Phosphofructokinase ( d ) Hexokinase
6. Which enzyme helps in transfer of phosphate group from ATP to a carbohydrate ?
( a ) Phosphatase ( b ) ATPase ( c ) Phosphorylase ( d ) Catalase
7. Two FADH₂ molecules formed in aerobic respiration will produce
( a ) 2 ATP ( b ) 4 ATP ( c ) 6 ATP
8. Select the correct statement from the following .
( i ) ATP synthase is considered to be the fifth complex of electron transport chain ( ii ) No carbon dioxide is evolved in glycolysis .
( iii ) Glycolysis uses oxygen as terminal oxidant .
( iv ) Acceptor molecule of Krebs ' cycle is a 5 - carbon compound .
( a ) ( i ) and ( iv ) ( b ) ( ii ) and ( iii )
( c ) ( i ) and ( ii ) ( d ) ( iii ) and ( iv )
9. In Krebs ' cycle , CO₂ is evolved during the conversion of
( a ) isocitrate to oxalo - succinate ( b ) a - ketoglutarate to succinyl COA
( c ) fumarate to malate ( d ) cis aconitate to isocitrate .
10. Which statement is wrong for Krebs ' cycle ?
( a ) There is one point in the cycle where FAD + is reduced to FADH₂ .
( b ) During conversion of succinyl CoA to succinic acid , a molecule of GTP is synthesised .
( c ) The cycle starts with condensation of acetyl group ( acetyl CoA ) with pyruvic acid to yield citric acid .
( d ) There are three points in the cycle where NAD + is reduced to NaDH + H + .
11. In electron transport chain , complex IV is
( a ) succinate Q - reductase complex
( b ) cytochrome c - oxidase complex
( c ) NADH - Q reductase complex
( d ) QH₂ - cytochrome c - reductase complex .
12. Select the correct order of steps in glycolysis that include dihydroxyacetone 3 - phosphate .
( a ) Fructose 1,6 - biphosphate → Dihydroxyacetone phosphate → 1,3 - biphosphoglycerate → 2 - phosphoglycerate
( b ) Dihydroxyacetone phosphate → Fructose 1,6 - biphosphate → Glyceraldehyde 3 - phosphate - 1,3 - biphosphoglycerate
( c ) Fructose 1,6 - biphosphate →→ Dihydroxyacetone phosphate → Glyceraldehyde 3 - phosphate - 1,3 - biphosphoglycerate
( d ) Glyceraldehyde 3 - phosphate → Dihydroxyacetone phosphate → 3 - phosphoglycerate → 2 - phosphoglycerate
13. First step of EMP pathway is
( a ) phosphorylation of glucose ( b ) oxidation of pyruvate
( c ) formation of citrate ( d ) formation of ATP .
14. The chemiosmotic coupling hypothesis of oxidative phos phorylation proposes that adenosine triphosphate ( ATP ) is formed because
( a ) a proton gradient forms across the inner mitochondrial membrane
( b ) there is a change in the permeability of the inner mitochon drial membrane towards adenosine diphosphate ( ADP )
( c ) high energy bonds are formed in mitochondrial proteins
( d ) ADP is pumped out of the matrix into the intermembrane space .
15. Substrate level phosphorylation is directly linked with
( a ) terminal oxidative of reduced coenzymes in respiration
( b ) liberation of energy in chemical reactions of respiration
( c ) electron transport chain
( d ) both ( a ) and ( c ) .
16. Read the given statements and select the correct option .
( i ) The total energy trapped per gm mole of glucose is 1292 Kcal .
( ii ) In glycolysis one glucose molecule liberates 4 ATP molecules through substrate level phosphorylation .
( iii ) The electrochemical potential gradient created across the membrane during electron transport chain , is called proton motive force .
( a ) ( ii ) and ( iii ) are correct ( b ) ( i ) and ( ii ) are correct
( c ) ( iii ) is correct only ( d ) ( i ) and ( iii ) are correct
17. The common pathway of aerobic respiration consists of
( a ) glycolysis and Krebs ' cycle only
( a ) glycolysis , Krebs ' cycle and terminal oxidation
( c ) glycolysis , pentose phosphate pathway and Krebs ' cycle
( d ) glycolysis , electron transport chain and oxidative phosphorylation .
18. In which one of the following reactions of glycolysis , oxidation takes place ?
( a ) Glucose 6 - phosphate to fructose 6 - phosphate
( b ) Fructose 6 - phosphate to fructose 1,6 - bisphosphate
( c ) 1,3 - bisphosphoglycerate to 3 - phosphoglyceric acid
( d ) 3 - phosphoglyceraldehyde to 1,3 - biphosphoglycerate
( e ) 2 - phosphoglycerate to phosphoenol pyruvate
19. Select the incorrect match .
( a ) Malate - 4C compound
( b ) Succinate - 5C compound
( c ) Acetyl COA - 2C compound
( d ) Phosphoglycerate - 3C compound
20. Oxidative phosphorylation is
( a ) formation of ATP by transfer of phosphate group from a substrate to ADP
( b ) oxidation of phosphate group in ATP
( c ) addition of phosphate group to ATP
( d ) formation of ATP by energy , released from electrons removed during substrate oxidation .
===================== BEST OF LUCK ======================
Answer Key
1 . ( b ) 2 . ( c ) 3 . ( a ) 4. ( b ) 5 . ( c ) 6 . ( c ) 7. ( b ) 8. ( c ) 9. ( b ) 10. ( c )
11. ( b ) 12. ( c ) 13. ( a ) 14. ( a ) 15. ( b ) 16. ( a ) 17. ( b ) 18. ( d ) 19. ( b )
20. ( d )
======================================================
===== Connecting With Me For More Knowledge Of Biology =====
MANISH MEVADA
M.Sc, M.Phil, B.Ed
GUJARAT BIOLOGY NEET
NEET MATERIAL IN GUJARATI
KNOWLEDGE ON THE WAY....................
Please Do Not enter any sparm link in comment box