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Collected questions on photosynthesis chapter
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LALIT TUTORIALS
1. ATPsstands for?
(A{Adenosine 3'- triphosphate Y
(2) Adenosine ~ 3° trio phosphite
(3)Adenosine 5" triphosphate ~
(4) Adenosine 5! ~ triophosphite
In the process of photosynthesis
(1) Oris taken and C02 is evolved
(2) O2is taken and COs is not evolved
(B) COe is taken and CO- is evolved
(ACOs s taken and Oris evolved os
3. Astertion: ATP act as energy currency of cll
Reason : Energy released through respiration is trapped
asbio-chemical energy in the form of ATP.
(i) Only Assertion is correct
(2) Only Reason is correct
{(G\Both Assertion and Reason is correct
(4) Both Assertion and Reason is wrong
4, The full form of NAD
(1) Adenosine diphosphate
(2) Nicotinamide adenosine dinucleotide
Nicotinamide adenine dinucleotide
(4)None ofthe above
5. Compounds that are oxidised during the process of
respiration is called?
()Respiratory index (2) Reductory substrate
Respiratory quotient (4 Respiratory substrate
6. NADP+ reduces to NADPH: in
Gypst
@) Calvin cycle
{G) Cyclic photophosphorylation
{A\Non- Cyclic photophosphorylation
7. Statement : Only green plants and cyanabacteyia can
prepare their own food by photosynthesis.
Statement!I: Only green plants and cyanobacteria
prepare thelr own food by converting chemical eneSky
tolight energy
Which ofthe statements is/are true?
(GQOnly! (2) Only .
(3) Both of these (A)None ofthese
8. Photolysis oftwo water moleculesyield >“
(4) 2 electrons and 4 protons
(24 electrons and 4 protons
)4electrons and 2 protons
(4) 2 electrons and 2 protons
Ikimately all the food that s respired for life processes
‘comes from photosynthesis.” The above statement is ~
(ieorrect
@)incorrect
(3) partially correct
(4) can‘tbe said as tis incomplete
10. Which one of the following statements about the events
‘ofnon-cyelic photophosphorylation is not correct?
(1) Photolysis of water takes place.
Only one photosystem participates.
(B)ATP and NADPH are produced.
(4) O2is released.
1, Which ofthe following cannot-be used as respiratory
substances in plants under any conditions?
Grae Q) protein
(A.gone ofthese
ylation is also known as
(2) photorespiration
(4) biosynthetic phase.
ai
9.
PHOTOSYNTHESIS + RESPIRATION - 2
|
14. Which of the following contains copper?
(2) Quinone (24Plastoquinone
(3) Plastocyanin (a}cytbs
45. Choose the correct equation
(1) Galls20. + 1202 > 6120 + 6H20 + Energy
(2) Gatts20¢ + 302 + 2C02 + 31120 + Energy
(B.Cotli20¢ + 6CO2 — 602 + 6H20 + Energy
(4) Coti20¢ + 602» 6C02 + 6120 + Energy
16. Thylakoids possess photosynthetic complexes called
(1) photosystem land Il (2) cyt be fcomplex
(3) ATP synthetase (Aall ofthese.
17. Respiration organs for plants ake
(A) Lenticels (2) Stomata
(3) Woody Bark (A Both (1) and (2)
18, Which of the following is mismatched?
(A) | Photosystem 1__| Uses the P700 molecule in its
photocenter.
(a ‘Antenna ‘Contains hundreds of pigment
complex molecules.
{ay_[rca_———=F5s-carbon compound
(4) | Dark reaction —| ‘Takes place in the grana of the
chloroplast.
|
49. Meaning of glycolysis is
(1) Splitting of water (23 Splitting of sugar
{G) Splitting of fat (4) Splitting of protein
20. The Z scheme of photophosphorylation follows the
following sequerice:
PS tr ISPS coer NAP
Which of the following options is correct for A, B, C, D
transfer of electrons?
irk pa 1D
(| Ushi — [owen | Uphit | Down
(@) | Downhi -Uphill__|-BownBill | Uphill
(2)_[Downui | vpn —[ Uphill [Downhill
FG) Lupsili [Downhill | Downhill [Uphill
21, Glycolysisis also known as pathway.
(JETS (EMP GENP (4) ELP
22, Ina condensed schematic representation of dark
reaction of photosynthesis given below, steps are
indicated by alphabets, Select the option where the
alphabets are correctly identified.
pit © Tha compound
PGA
RuMP © 3 diPGA
3 PGA
‘Glucose
(1) A=C0> fixation, B= Reduction, C
D= Regeneration
‘Az Regeneration, B = COs fixation, C= Reduction, D
1osphorylation
(3\A= COs fixation,
D = Regeneration
= CO: fixation, B = Phosphorylation,
eration, D = Reduction
23, Where do glycolysiS oceurs?
1) In Mitochondria
(2) In Chloroplast
(lin Cytoplasm
hosphorylation,
= Phosphorylation, C= Reduction,
(4) Im Endoplasmic reticulumSadithe given statements and select the cotrect option
‘12 molecules of
casein 1: 6 molecules of CO2,
NADPH: + H* and 18 ATP are used to form ‘one hexose
‘molecule.
‘Statement 2 In ight reaction formation of ATP and/
NADPH take place.
(1) Both the statements are true and statement 2 isa
correct explanation for statement 1.
(Q\Both the statements are true but statement 2s nota
cortect explanation for statement 1
@) Statement 1is true butstatement 2 i false
(4) Both the statements are false.
25, Glycolysis occurs in which among the following?
(i) Aerobic organism (2) Anaerobic organism
(3) Bukaryotes (A All ofthe above
26. Identify the parts marked as A, Band Cin the given
figure showing ATP synthesis through chemiosmosis.
# NADP’
Ponape
z a Te
“TiylakordTumen | Cho | CF
(2M Thylakoid amen | crs [che
(3) [chloroplast lumen | CF [ Ci
(2) | Chloropast amen [CFs [CFs
27. Swerose is converted to__(A)_and_{B)_ using enzyme
eEOTE C
| iucose | ctucose | Wexokinase
(@) | Giucose | Fructose | Hexokinase
(G) | Glucose | Glucose | Invertase
‘Glucose | Fructore | lavertase
28. Whats the isomerised produce of glucose - 6 ~
phosphate in the steps of glycolysis?
(2) Fructose 1, 6 - bisphosphate
(Fructose -6 - phosphate
(@) Fructose -1, 3, 6 - triphosphate
(4) Fructose -3 - phosphate
29, Identify different pigments A to C in the given graph.
‘oo 300~=—«600~=«700
‘Wavelength of ight fo nanometres (nm)
x 5 ie
Ti carotenoid | chlorephyila | chlorophyll
[x [chlorophyll | corophyllb | Carotenoid
(G-[ Galorophyil | carotenoid | Chlorophyll
(@)-[ carotenoid | ChoropiyiIb | Chlorophylt
30, Giycolysis is a how many steps of
Gp (ten @)Biaht Delray Bhe
CChemiosmotic hypothesis for generation of ATP.
. di
was firstexplained by af
_ 2) Ammold (3) P. Mitchell (4) Van Niet
1-6 Phosph
eto fructos®1, 64
33, Read the
34, One molecule of glucose is conve!
35, When PGAL is converte
36. How many components listed below are part
(38) Pyruvic acid is composed
Following statements:
(a) Fopart of ATPase is ‘associated with breakdown of 7
proton gradient.
(B)A H-carrier contributes in creation of proton /
radient.
{€) Movement of electrons in ETS is coupled to pumping /
‘of protons into the lumen. :
{0} Formation of NADPH + H+ related with the/
creation of proton gradient.
How many of the above statements are correct?
(ytwo (2) One (Four —_(#) Three
rted into how many
molecules of pyruvic acid?
wi (a2 (3)3 (44
xd into BPGA in process of
respiration there is formation of?
(41 molecule of ATP (2) 1 molecule of Hz0
(@}i molecule of NADH + H+__ (4) 1 molecule of ADP
of eyclic
Biel a ea oe
|, Water Splitting Complex, PS Il, Proo, Poss NADP ]
reductase, Hydrogen carrier rt
(two (Three (3)Five
@ Four
@ What does PGAL stands for?
(Q3- Phosphoglyceraldehyde
(2)5-Phosphoglyceraldehyde
(3) 3 - Phosphoglyceric acid
(@)5- Phosphoglyceric acid
‘oF how many carbon atom?
Cee tires Four) FWe
a Geren Oe A ae
‘EC | Primary e- acceptor
NADPreductaze | (| Photoysis of #20,
Succnyl Con | (i) | Outersurface of thylakoid
‘membrane
Theaopia Sma 7
Chlorophyll spate
By tiie Lop
ay ct bn Le Lt
40. Which among the following step in glycolysis yields
energy?
Cece
ii) Conversion of fructose - 6 -phosphate to fruct
6 -bisphosphate i
i ae eet ana
iv) Conversion of glucose ~ 6 -phosph .
cor phosphate to fructose ~ 6
(2) Both i and iv
(8) Both i and it
ivi iit
(4) Allofthe above
41. Examine the igure given below and select
n below a select the ight
option giving al the our pars (,, ed) correct
identified. SE am
@24)
BIOLOGY
colysis, fructose 1, 6 bisphos
ees phosphate get split into
(1) PGAL and BPGA
(2) Glyceraldehyde - 3 - phosphate and 3 ~
Phosphoglyceric acid
(iGlyceraldehyde - 3 ~ phosphate and Dihydroxy
‘acetone phosphate
(4) None of the above
43. Which is not true regarding cyclic electron transfer
system (ETS) in thylakoid membrane of higher plants?
(2) Operates at tow light intensity
(2) Only Ps tis involved
(8) Actas back up for ATP synthesi
What is the net gain of ATP from one molecule of
@ External electron donor is required
slucose in one complete glycolysis?
ma @3 @s we
(tow ‘many molecules of NADH? are produced imone
complete proces of lel of ne glucose molecule?
1
46, Which among the
Glycolysis?
{ Itis the only process that occurs in anaerabes for
Oxidation of glucose.
Gi) Glucose undergoes complete oxidation to form
pyruvicacid,
(il) tthe end, there is anet gain of 4 ATP and 2 NADH.
(ony ii (2) Both tianaitt
(3) only (4) allofthe above
ATPynthesisis linked to development ofa.
(1pProtein gradient across a membrane
(2) Protein gradient not cross a membrane
{3) Proton gradient not cross.a membrane
(Proton gradient acrossa membrane
Anaerobic fermentation occurs when there is
(4) Complete supply of oxygen
(AANo supply of oxygen
(3) Complete supply of water
(4) No supply of water
® ‘The order of working of the two photosystems
@)rsi Psi (@yPsit > Psi
(PSI Pst (4) none ofthese
Which enzyme is responsible for alcoholic
fermentation?
(@) Pyruvic acid decarboxylase V
(2) Lactate dehydrogenase
(Alcohol dehydrogenase
(4) More than one op
@3s aya
llowing are correct about
®
5
51. ATP Synthesis is linked to_A_ gradient across a
membrane in 3
famines 8 |
Photeayaesl UrepCn
Photosynthesis onl
Photosynthesis & espa
Phntbeyntese ut not espe aon
52. Choose the correct option
Inthe fermentation process:-
{Oxidation of ADP to ATP takes place ¥~
(Gi) Reduction of ATP to ADP takes place
(iil) Reducing agent NADH + Ht is reoxidised to NAD*
{iv) Formation of NADH + H takes place by oxidation
G)iiandiv (2) iiand iii
(@)Both i and it (4) Only it
53. NADP reductase enzyme is located on
thylakoid membrane.
(Stroma side (outer side)
(2)Lumen side (ie. outer side)
G) Stroma Side (Le. inner side)
(4) Lumen side ({e. inner side)
‘54. The range beyond which yeasts poison themselves to
"death in alcohol fermentation when the concentration of
to?
(2) 15% (3)12%
. Lalit Tutorials.
Electron
Proton
of
(4) 17%
58. Conformational change in —_ makes ADP wo ATP.
(CP (2) cr: (Both (4) None
56, Complete the following reaction-
Pyruvate (ena — p> Acey COA + NADI
(2) ©) 02 (i) Maz (i COx (2) (i) 0 (it) Na (ii) H20
(3) (9 CoA Gi) Nar (i) COs (49 (9 Cod (a) Ma (i COs
CFois—
(QQ embedded in thylakoid membrane
(2) protruding on outer surface of chloroplast
Gyprotnuding on inner surface of chloroplast membrane
(4) Wone of these
Pyruvate enters to the mitochondrial matrix and
undergoes.
(2) Reductive decarboxylation
(2) Oxidative carboxylation
(3) Reductive carboxylation
(4) Oxidative decarboxylation
Chris-
(1) embedded in thylakoid membrane
(@kprotruding on outer surface of thylakoid membrane
) protruding on inner surface of chloroplast
(4) both (1) and (2)
57.
58.
59,
60, Who elucidated Tricarboxylic Acid cyte?
(@) Johns Elen (ajdfans Krebs
@)Meyertiott (4) Elena Parker
64, ATP synthase has a channel thatallows ___of protons
backacross the membrane
(1) Osmosis (2)Active Transport
) Diffusion (4) All ofthe above
62. How many molecules of NADH + H* are produced when
pyruvate converts to Acetyl CoA in TCA cycle?
(yo 1 2 (a3
63, Which ofthe following processes fs responsible for
generating proton gradient across the thyakold membrane?
(1) Proton carrier transport H from stroma to lumen
(2) Slitting of water on the inner side ofthe membrane
(3) NADP reductase enzyme present at the stroma side,
Temoves proton by reducing NADP*
(Allo the above
64, Where does TA cele cars?
(2) Cytoplasm (2) Mitochondria cell wal
(@Mitochondria matrix (4) Chloroplast
65. Which one of the following isnot true regarding the
release of energy during ATP synthesis through
chemiosmosis? Itimvolves
(4) Breakdown of proton gradient
(2\ Breakdown electron gradient
(} Movement of protons across the membrane tothe
stroma
(4) Reduction of NADP to NADPH: on the stroma side of
the membrane
66. Whatisthe Iststep of TCA cycle?
(2) Formation of citrate from isocitrate
(@\ Formation of etrate from the acetyl group of acetyl
cor and oxaloaceticacid
(3) Formation of etrate from decarboxylation of
succinic acid
(#) None of the above
67. Which one ofthe following concerns with
photophosphorylation?
(1) DP «amp E05 arp
(AAD? + Inorganic Poy — 28825 rp
(3)ADP + Inorganic PO ——+ aT
(i) AMP Inorganic POs—> AT
68. Whats the ust member of TEA cle that accepts
ceil Com?
Gy cteate
AOralceticacia
6s, Flow oft Coe requires:
G)oNADMHON) SSATP aNADeUGH) &saTP
(3) 4NADPHGH) &3ATP (A)SNADPH) 8 SATP
70. How many total COz molecule are released from
Pyruvate to completion of PCA cycle?
Qs
(2) Coa
(4) Both (1) and (3)
mo @1 @2
++++-n Institute For Excellence in Sciencea
jown of chlorophyllis called
(1) Necrosis (2) Chiorosis 7
larization (4) Defoliation
72. One molecule of glucose synthesizes how many
molecules of NADH + Hat the end of TCA cycle?
ae Q7 ae (aio
73. How many pigment molecules are present inlight
harvesting complex?
(4200-250 (2) 400-50 (3)500-650 (4) 250-400
complete oxidation of gne glucose (inéluding ATP of TCA) 7
aa Q2 @3 (Qs
7, Whichofthe flowing incorrect about photosystem?
(2) There are two photosystem (PS I and PS 11.
tan PSI are named in sequence oftheir discovery.
(8) LUCis made up of hundred of pigment molecules
‘which are bounced proteins,
(GX Each photosystem has all the pigments (Except one
molecule of chlorophyll’)
76, ETS occurs in which place?
(2) Outer membrane of mitochondria
(2) Cytoptasm
(Xinner membrane of mitochondrta
(4) Matrix of mitochondria
77. BTS stands for
(2) Electrical Transport System
(2) Blectron Transmission System
(Electron Transport System,
(4) None of the above
78. Ubiquinone islocated at__.
(QQinner membrane of mitochonari
(2) outer membrane of mitochondria
(3) inner membrane of nucleus
(4) outer membrane of nucleus
Raine recelves electrons from whch ofthe folowing?
74, How many net ATP molecules are directly yielded soe
() From NADH produced in mitochondrial matrix during TCA.
(ii) From FADH2 produced during oxidation of succinate in
TCA,
G) only: 2) only it
(Q\Both iand if (4) None of the above
80. Electrons from NADH produced during TCA are oxidised
by which enzyme?
(2)NAD*hydrogenase (2) NADH dehydrogenase
(3) NAD* hydroxylase (4) NADH dehydroxylase
81. The reduced ubiquinone are also called what?
(4) Ubiquinate (2) Ubiquinase
(3) Ubiquinal (AUbiquino!
82, Whatis the function of cytochrome ¢?
(2) Actas donor of electron
(2) Passage for movement of
(3) Act as a receptor of e- between complex fi and Ill
(iActasa mobile carrier for e transfer between
complex and IV
83, What does cytochrome c oxidase complex contains?
(1) Cytochrome a (2) Cytochrome as
(3) Two copper centres (4) All of the above
£84, Oxidation of one molecute of NADH2 produces how
many molecules of ATP?
@i @2 as @s4
85. Oxidation of 2 molecule of FADMz produces how many
molecules of ATP?
@z 3)3 ae
\hhydrogen acceptor.
ith C atom and released COz,one of the
(2)itionly ©
(4) Allofthe above
(i This is used to synthesis
released during ETS,
(iil) Ieworks on the basis of
‘88, Which among the following is wrong about ATP synthase?
(i) Itisalso called complex v.
BIOLOGY 4,
‘ATP by utilizing the energy.
proton gradient.
(iv) [teonsist of two major components, Fs and Fo.
(4) only
G)iandiv
()wnatisrsinarpsyntase?
(2) ttcontain a site for ADP
(2) Both iand ii
(4) None of the above
(1) Itcontain a site for protein synthesi
synthesis from ATP,
(2Necontain a site for ATP production from ADP.
(4) Itactasa channel through which proton cross the
inner membrane.
90, Whatis the role of Fo in A'TP synthase?
(1) Itact asa channel through which e-crosses the innei
membrane,
(@Ultactas a channel through which proton crosses the
inner membrane.
(3) Itactas a mobile protein carrier of electron across
the inner membrane,
(4) Acts as site for ATP synthesis
91. For each ATP produced,
__ passes through FO from
{intermembrane space to the matrix down the
electrochemical proton gradient.
(Mt @zH
@) a en
'92) Whatis the net gain of ATP molecules during aerobic
respiration of one glucose molecule?
\()40ATP (Q3BATP (3)36ATP (4) 34 ATP
noeite anes
Karat
ara
Grp ar abe
ay baat ep
94. The respiratory balance sheet is calculated on some
assumptions,
Which of the following assun
mption is correct?
(2) ‘The pathway is sequential, with series of glycolysis,
ETS and TCA cyclen the same order fora given molecule
(2) NADH is transferved to chlor
phosphorylation occurs,
(3) Only glucose is the subst
roplast where oxidative
ing to formation of 3 ATP
rate and none other
substrate or intermediate enters or leaves the pathway
(2) (4) None of these
((95, tn the balance sheet of fermentation, net gain is -
J (4) 12 ATP molecules
@ eens
ee ee
Hesoee
i) | Aeety Coa
(2) 38 ATP molecules
(4) 8ATP molecules
7ST Ties
“taf Pa
eran Hany
& ‘What willbe the RQ for the following equation
2{CasHlaeOs) + 145 02> 102 C02 + 98 Ha0 + Eneray
(09 @1
Match the following,
AL Nabi |G) iat
5 ATP
AT
apa be an
@os or
i
He
‘Whats the final end product of TcA.cycte?,»
(1) 3 NADI +H
(@) LRADH
@1ai
(BHA ofthe above
100, How many ATPs are produced through ETS only from
‘L molecule of 3-phosphoglycerate in aerobic respiration
(14
@ie (415
\