STEP Self Assessment Test 2020 -Biology Test No.4 - MDCATustad

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Saturday, June 20, 2020

STEP Self Assessment Test 2020 -Biology Test No.4

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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