STEP Self Assessment Test 2020 -Biology
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Biology Self Assessment Test 2020:
26. The products of
light dependent reactions
a ATP & Co2
b NADPH2 & Co2
c ATP & Glucose
d ATP &
NADPH2
27. Antenna complex of
each photosystem consists of
a Chl a, Chl b
b Chl a, Chl
b, & carotenoids
c Chl a,
primary electron acceptor
d Chl a,
primary electron acceptor, electron transport system
28. Electron transport
system plays role in generation of ATP by
a Diffusion
b Osmosis
c Chemiosmosis
d Photosynthesis
29. Photosystem I (PSI)
absorbs maximum light of
a 680nm b 700nm
c 760nm d 780nm
30. During non-cyclic
phosphorylation, a second electron transport chain transmits photoexcited
electrons to
a Ferredoxin (Fd)
b Plastoquinone
Pq
c Plastocyanin (Pc)
d Cytochrome
complex
31. Which one of
followings is generated during cyclic phosphorylation
a ATP only
b ATP &
NADPH
c ATP & oxygen
d ATP, NADPH
& oxygen
32. Light independent
reaction occurs in the stroma of chloroplast
a In the presence of light
b In the
absence of light
c In the
presence or absence of light
d Not
at all
33. Calvin was awarded
Nobel prize in
a 1861 b 1961
c 1969 d 1971
34. The Calvin cycle is
also known as
a C3 pathway
b C4 pathway
c C5 pathway
d C6 pathway
35. The Calvin cycle
begins when a molecule of
a Oxygen reacts with RuBP
b Oxygen reacts with 3-Phosphoglycerate
c Co2 reacts
with RuBP
d Co2 reacts with 3-Phosphoglycerate
36. During Calvin cycle,
which one of followings conversion occur
A 5 molecules of 3c → 3 molecules of 5c
b 3 molecules of 5c → 5 molecules of 3c
c 6 molecules of 3c → 3 molecules of 6c
d 3 molecules of 6c → 6 molecules of 3c
37. The most common fuel
to provide energy by cellular respiration is
a Starch
b Glycogen
c Glucose
d Proteins
38. Glycolysis is the
breakdown of glucose upto the formation of
a Citric acid
b Pyruvic
acid
c Oxalo
acetic acid
d Glyceraldehydes
3-phophate
39. Glycolysis takes
place in the
a Presence of light
b Presence of
O2
C In the presence or absence of O2
d In the presence or absence of glucose
40. All reactions of
Glycolysis take place in the
a Cytosol
b Mitochondrial
matrix
c Matrix of chloroplast
d Thylakoid
membranes
41. Total out put of
Glycolysis
a 1 Glucose + 2ATP + 2 NAD+
b 2 pyruvate + 4 ATP + 2(NADH+H+)
c 4ATP +2(NADH+H+)
d 2ATP+2 (NADH+H+)
42. Over all profit of
Glycolysis
a 1 Glucose + 2ATP + 2 NAD+
b 2 pyruvate + 4 ATP + 2(NADH+H+)
c 4ATP +2(NADH+H+)
d 2ATP+2 (NADH+H+)
43. Before entering
kreb’s cycle, the pyruvate is converted into
a 2-carbon acetic acid
b 3-carbon acetic acid
c 5-carbon RuBP
d 6-carbon RuBP
44. Krebs cycle occurs
in the
a Cytosol
b Mitochondrial matrix
c Matrix of chloroplast
d Cristae of
mitochondria
45. The result of one
turn of kreb’s cycle is
a 1 ATP +1FAD(ox) + 1NAD(ox)
b 1 ATP+1FAD(red) +1NAD(red)
c 1ATP+1FAD(ox) +3NAD(ox)
d 1ATP+1FAD(red)+3NAD(red)
46. Respiratory chain
occurs in the
a Cytosol
b Mitochondrial matrix
c Cristae
d Thylakoid Membrane
47. In Respiratory
chain ,H+ ultimately reacts with
a Oxygen
b CO2
c H2O
d Glucose
48. In respiratory chain
Coenzyme Q is oxidized by
a Cyt
a b Cyt a3
c Cyt b d Cyt c
49. In respiratory chain
, ATP is formed in
a One step
b 2 steps
c 3 steps
D 4steps
50. Keeping in view, the
over all budget for respiratory chain, the number of ATP
a 2 b 4
c 34 d 38
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