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