Exam Details

Subject botany
Paper paper 2
Exam / Course
Department
Organization rajasthan public service commission
Position college lecturer
Exam Date 2016
City, State rajasthan,


Question Paper

1 If in a cell the value of osmotic potential in 20 atm. and pressure potential is 20 atm., after sometime because of osmosis, the cell becomes partially turgid and finally completely turgid. At this stage(completely turgid), the value of Diffusion Pressure Defficit will be

Zero atm.

40 atm.

20 atm

20 atm.

2 A teacher while demonstrating in the practical class, took some gram seeds in a glass bottle and poured some water into it. He replaced the lid of bottle, sealed and left for 48 hours. He observed that the glass bottle was broken. This could be because of one of the following

Release of Oxygen during photosynthesis

Osmotic pressure due to osmosis by the seeds

Creation of vaccuum due to intake of carbondioxide for calvin cycle.

Imbibition pressure caused by the seeds.

3 When an irrigated potted plant is cut just above the ground level and a manometer is attached to stump with the help of piece of rubber tube so that no air enters in it. There is rise in mercury level after sometime, This is because of

Root pressure

Pulsation in living cells of root

Capillary action in xylem cells

Imbibition force

4 When S Number of stomata per unit area, E Number of epidermal cells per unit area, The Stomatal Index

can be calculated by the formula1)

<img src='./qimages/3399-4.jpg'>

5 In succulent plants (CAM plants), some physiological processes which occur in stomata are listed below A. Malic acid accumulates in vacuole. B. From Vacuole malic acid is transported to Chloroplast. C. Starch is synthesised in the chloroplast. D. Starch is converted into phosphoenolpyruvate in chloroplast. Select the processes which occur during opening of stomata

B and C

A and C

A and D

C and D

6 Plants require many elements for their growth. Some elements are required in very small quantity and are called trace elements or minor essential elements. These are

Sodium, Phosphorus, Magnesium and Copper

Boron, Manganese, Zinc and Molybdenum

Silicon, Sulphur, Nitrogen and Calcium

Potassium, Zinc, Chlorine and Carbon

7 A farmer while visiting his field observed that plants are showing distortion and drying of plants from tip to downwards (Die back symptom). The field is probably deficient in

Boron

Copper

Iron

Zinc

8

Name of Scientists(I) and their contribution(II) is given below. Make correct match:I II

A. Louis Pasteur 1. Crystalized Urease Enzyme
B. Kuhne 2. Discovered Zymase Enzyme
C. Buchner 3. Used term Ferments for Enzyme
D. Sumner 4. Coined the term Enzyme

A B C D i iii ii iv

A B C D iv ii i iii

A B C D ii iii iv i

A B C D iii iv ii i

9 The prosthetic group of enzyme is

Firmly bounded protein with an enzyme.

Firmly bounded non protein part with an enzyme


Loosely bounded inorganic metal with an enzyme


Loosely bounded organic cofactor with an enzyme

10

Given below are names of coenzymes( and their functions(II). Make correct matchI II

A. FAD 1. Phosphate group transfer
B. ATP 2. Carboxyl group transfer
C. Biotin 3. Decarboxylation
D. Thiamin Pyrophosphate 4. Transfer Hydrogen

A B C D iv i ii iii

A B C D ii i iii iv

A B C D iv ii iii i

A B C D iv iii ii i
11 Isozymes are formed due to point mutation and these are characteristized as enzymes which have

Different molecular weight but are similar in function

Different molecular structure but are similar in function

Different function but silmilar in molecular structure

Different function but similar in molecular weight

12

6 and 12

12, 6 and 18

11, 12 and 18

12, 11 and 36

13 The number of photons needed for evolution of one molecule of oxygen in photosynthesis is
8

2

12

18

14 During photosynthesis the oxygen in glucose molecule comes from

Carbon dioxide

Water

Oxygen

Both Carbon dioxide and Water

15 In Calvin cycle the assimilatory power is used during

Formation of PGA

Conversion of PGA to PGAL

Formation of Fructose 6 diphosphate from PGAL

Formation of glucose from Fructose diphosphate

16 A chlorophyll molecule has

One Pyrrole ring, Magnesium ion, Keto group and phytol chain.

Five Pyrrole rings, Magnesium ion, methyl or keto group and phytol chain

Two pyrrole rings, Magnesium ion, methyl or keto group and aliphatic chain

Four Pyrrole rings, Magnesium ion, methyl or aldehyde group and phytol chain

17 Water soluble pigments of plants are

Anthocyanin and chlorophyllb

Carotenes and Xanthophylls

Chlorobium chlorophyll and chlorophylld

Phycoerythrin and Phycocyanin

18 Some characters of pigment system of green plants are listed below

A. Takes part in both cyclic and non cyclic electron trasport system.
B. Active center is P680.
C. It is connected with photolysis of water. Mostly present in stroma lamellae The characters related to PS II are

A and B

A and D

B and D

B and C

19 Which one is the correct path of electron in pigment system II (PSII) of photosynthesis?

<img src='./qimages/3399-19.jpg'>


20 What is common in Phycobilins and Chlorophyll

presence of Phytol tail in their molecule

Presence of magnesium ion in their molecule

Presence of pyrrole ring in their molecule

Their absorption spectra is same.

21 Make the correct match of enzymes(I) and their substrate(II)

which are given belowI II
A. RUBISCO 1. Dihydroxy acetone phosphate
B. Triose Phosphate isomerase 2. Xylulose5phosphate
C. Transketolase 3. Ribulose5phosphate
D. Ribulose phosphate Isomerase 4. Fructose6phosphate and 3phosphoglyceroldehyde

D-iii


B-iii, D-ii

C-iii, D-i

A-iii, D-ii

22 The synthesis of chlorophyll starts with the condensation of two molecules, these are

Protochlorophyll and Mg Protoporphyrin

Glycine and Succinyl Co enzymeA

Protoporphyrin and Protoporphyrinogen


Aspartic acid and Glycine

23 Some features of dark reaction of photosynthesis are given below

A. Chloroplast of leaf shows dimorphism.
B. Oxygen has inhibitory effect on Photosynthesis
C. 18 ATP are required for synthesis of one molecule of glucose
D. First stable compound is Oxaloacetic acid.

Select the features which are found in C4 plants.

A and B

A and D

B and C

B and D

24 The isotopes of carbon used extensively for studies in photosynthesis is

C 12

C 13

C 14

C 16

25 Carbon refixation in C4 plants occurs in chloroplast of

Palisade tissue

Spongy tissue

Bundle sheath cells

Guard cells

26 Process of photophoshphorylation was first given by

Hill

Willstotter and Stoll

Arnon

Park and Biggins

27

Hydrogenase

Nitrogenase

Dinitrogenase

Nitrate reductase

28 Leghaemoglobin creates

Anaerobic condition for optimum activity of nitrogenase

Aerobic condition for optimum activity of nitrogenase

Maintains oxygen concentration for optimum activity of nitrogenase

Makes suitable environment for nodule formation

29 Total number of proteinogenic amino acids in the living world is

20

21

22

23

30 Oxidative deamination is the conversion of an amino

Group from and amino acid to a keto acid

Acid to a carboxylic acid plus ammonia

Acid to a keto acid plus ammonia

Group from an amino acid to a carboxylic acid

31 Which of the following is not an essential amino acid?

Proline

Histidine

Leucine

Methionine

32 Which type of bonding is responsible for secondary structure of protein?

Disulphide bridges between cystein residues

Hydrogen bonding between C=O and NH groups of peptide bond

Peptide bonds between amino acids

Salt bridges between amino acids

33 Plants can absorb directly one of the following for nitrogen

Ammonical nitrogen

Atmospheric nitrogen

Nitrous oxide

Nitric acid

34 In protein synthesis of eukaryotic organisms the initiation of polypeptide begins with an amino acid and the polypeptide synthesis terminates with some specific codons of genetic code. These are

Methionine and AUG, UAA and UGG

Methionine and UAA, UAG and UGA

Methionine and UUA, AAU and GAU

Methylalanine and UAG, UGA and UAA

35 One of the following is intracellular receptors for signal transduction

Cytokinine and cyclic AMP

G proteins and CA+

Vitamins and Retinoids

Porins and Labda receptors

36 Gproteins are present

In cytoplasm

In nuclear membrane

On inner surface of plasma membrane

On outer surface of plasma membrane

37 The contact of interferon with its receptor on cell surface activates

DNA replication

Translation factor

Second messenger

Transcription factor

38 The scientist who received Nobel Prize for the discovery of GProteins

Alfred Gilman and Martin Rodbel

Bruce A.Bentler and Jullers A. Hoffman

Barbara McClintock

39 Ribulosebisphosphate carboxylase is a dual activity enzyme because it acts both as

Carboxylase and Kinase

Carboxylase and Dehydrogenase

Carboxylase and Oxygenase

Carboxylase and Phosphatase

40 Krebs Cylcle is also known as

C4 CYCLE

TCA cycle

Citric Acid cycle

Both TCA cycle and Citric Acid cycle

41 The respiratory quotient of any sustrate depends upon

O2 uesd

co2 relased

o2 used and co2 relasd

None of these

42 The efficiency of respiration in terms of energy produced by one glucose molecule is approximately

76%

60%

40%

56%


43 Oxygen induced inhibition of carbohydrate breakdown is known as

Pasteur effect

Photo inhibition

Photorespiration

Aerobic respiration

44 According to Chemiostic theory of ATP synthesis proposed by Peter Mitchell, how many ATPs are formed per pair of protons traversing across the membrane during oxidative phosphorylation?

Two

One

Three

Four

45 Under limiting conditions of Oxygen the NADH and pyruvate begin to accumulate. What will happen under these condition?

Pyruvate will concert back to glucose

Ethanol will be formed

Lactic acid will be formed

Both Ethanol and Lactic acid will be formed

46 Photosynthetically Active Radiations fall in the range of

400700 nm

254700 nm

260560 nm

600700 nm

47 Which of the following is not a plant growth regulator?

Morphactin

Putrescine

Strigolactones

Rishitin

48 Which of the following is not a naturally occuring Cytokinins

Benzyladenine

Zeatine

Dihydrozeatin

Isopentanyl adenine

49 The precursor of auxin biosynthesis is

Phenylalanine

Glycine

Tryptophan

Methionin

50 Which of the following auxins is synthetic?

1AA

1BA

NAA

PAA

51 What is the maximum photosynthtic efficiency of crop plants when measured after absorption of photosynthetically active radiations?

18%

33%



11%

52

Plants of tropical rain forest

Temperate grass land

Sea plants

Desert plants

53 Which of the following is not a micrinutrient?

Molybdenum

Copper

Zinc

Magnesium

54 A dicot plant was subjected to water stress in a laboratory experiment. The chemical analysis revealed degradation of carotenoids present in plastids and the degradation products prevented plant from water stress. What was that product?

Mavalonic acid

Violaxanthin

Proline

Abscisic acid

55 The most active compound which caused seed dormancy in woody plants was named 'Dormin' who gave this name?

F.T. Adicott

P.F. Wareing

R.F.M. Van Steveninck

F.W. Went

56 The precursor of ethylene biosynthesis in plants is

Aminoethoxyvinylglycine

Amino Oxyacetic acid

1Aminocyclopropane1carboxylic acid

57 In an experiment the excised cotyledons of Raphanus sativus were treated with a chemical solution When incubated either in dark or light the size of cotyledons doubled as compared to control where no chemical was added. What could be this chemical

IAA

GA3

IBA

Kinetin

58 The production of hydrolytic enzymes and alphaamylase by aleurone layer to digest starch present in endosperm of barley seeds is dependent upon

Gibberellin produced by scutellum

Auxin produced by scutellum

Both gibberellin and auxin produced by scuttellum

Indole compounds produced by scutellum

59 Why seeds in a ripe tomato do not germinate even though the temperature moisture and oxygen conditions are favourable?

Due to presence of acids

Due to negative osmotic potential of juice

Due to presence of lycopene

All of these

60 In a rice field a disease called "Bakane Disease" suddenly appeared and all the plants grew longer than normal. Investigations revealed that the causal organism was Fusarium. What could be the reason for abnormal elongation of rice plants?

Xylem vessels were clogged

Fungus produced gibberellins

Fungus produced fusaric acid

Fungus produced auxin

61 One of the possible reasons of seed dormancy in plants can be due to

Abscisic acid

Thiourea

Cyanide

Azide

62 Which of the following physiological functions adversely affect the photosynthetic efficiency of plants?

Phosphorylation

Glycolysis

Photorespiration

All of these

63 Number of quantasomes capable of electron transport and photophosphorylation is

Two

3 8

4 10

12 15

64 Select the correct pair

Middle lamella cellulose

Primary cell wall cellulose and hemicellulose

Secondary cell wall Lignin and Cutin

Plasma membrane Lipids only

65 In Haplopappus gracilis root hair cells diploid chromosomes number is

2n 8

2n 4

2n 16

2n 32

66 Unidirectional export of which type of RNA takes place unidirectional through nuclear pores

tRNAs

rRNAs

tRNAs, mRNAs

tRNA and processed mRNA

67 In mitosis chrmosomes split at centromeres takes place in

Prophase

Metaphase

Anaphase

Telophase

68 Common wheat is a hexaploid (2n 42) its base number is

21

42

7

14

69

Plant height

Plant weight

Tiller number

Plant height, weight and tiller number

70 Eukaryotic polymerases are of five types. They are identified from

Yeast cells and rat liver

Human cell cultures

Tumour cells

Yeast cells, rat liver, human cell cultures and tumour cells.

71 Transposons are of how many types on the basis of their structures and mechanism of transposition

4 and 2

2 and 4

3 and 4

one and 4

72 The movement of DNA among mitochondria, chloroplasts and nucleus takes place in yeast and sea urchin. Such DNA is called

Pseudogenes

ZDNA

Promiscuous DNA

Split genes

73 The word gene was proposed for the first time by

Bateson

Johansen

Mendel

Lederberg

74 During transcription, only one strand of DNA duplex is copied. This strand is called

Sense strand

antisense strand

templeate strand

complimentary strand

75 Chromosomes constitution of Down's syndrome is

13, 13, 13

18, 18, 18

21, 21, 21

45, 47, 48

76 The polymerases found in eukaryotes are of which type?

alpha and beta

ghama and delta

ghama and E

alpha,ghama,ghama.delta and E

77 Heterosis is being exploited comercially in

crop plants

ornamental plants

fruit crops

In crop plants, ornamental plants and fruit crops

78 Cytoplasmic male sterility can be stopped by

Restorer genes

Cyptoplasm

Nucleus

Mitochondrial genes

79 Male sterile plants will be sterile when cytoplasm is sterile and genotype will be

RR

Rr

rr

RR, Rr or rr

80 In transformation, transforming principle is DNA was proved by

Avery, MacLeod and McCarty

Griffith

Hershey and Chase

Watson and Crick

81 Double stranded RNA is found in

R17

PIE X174

MS2

Wound Tumor Virus

82 Select the correct pair


Z-form of DNA 12 base pairs per turn

C-form of DNA 10 base pairs per turn

B-form of DNA 9.33 base pairs per turn

A-form of DNA 12 base pairs per turn

83 Conjugation in bacteria was discovered in

Lederberg and Tatum in 1946

Lederberg and Tatum in 1956

Lederberg and Tatum in 1960

Lederberg and Tatum in 1942

84 Select the correct statement related to transduction

A bacterium carrying a prophage is called lytic.

An intergrated phage chromosome is called episome

The prophage carrying bacterium is called lysogenic.

Bacteriophages are not required for transduction.

85 Bacteria like symbionts of Paramecium are

Alpha and gamma particles only

Alpha, gamma and lambda particles

Alpha, gamma, lambda and sigma particles

Alpha, gamma, lambda, sigma and omega particles

86 "Killer" strains of Ustilago maydis contain

Single stranded RNA in their cyptoplasm

Double stranded RNA in their cytoplasm

Double stranded DNA in their cytoplasm

Single stranded DNA in their cytoplasm

87 Select the correct statement for mtDNA

mtDNA codes for 23 types of rRNA.

mtDNA codes for 1326 types of proteins molecules

mtDNA codes for 23 types of rRNA and 1326 types of proteins

mtDNA codes for rRNA and mRNA

88 Chloroplasts contain

tRNA only

Ribosomes only

tRNA and ribosomes both only

tRNA, ribosomes and ringshaped DNA

89 Plasmagenes are located in

Nucleus

Nucleolus

Cytoplasm

Mitochondria and Plastids

90 CpDNA of Chlamydomonas has genes for

Streptomycin resistance

Erythromycin resistance

Both Streptomycin resistance and Erythromycin resistance

Penicillin resistance

91 Transductants having integrated phage chromosomes are called

Primary transductants

Exogenate

Endogenate

Secondary transductants

92 For mtDNA and cpDNA the recently proprosed model for replication is

RDR (Recombinationdependent replication)

Replication fork model

Rolling circle mechanism

Dloops

93 Chemical mutagens are classified into two types. Alkylating agents can induce mutations in

Replicating DNA

Non Replicating DNA

Replicating and nonreplicating DNA

In RNA

94 Chiasmata(X) are formed in which stage of meiosis I of Prophase

Pachytene

Diplotene

Leptotene

Diakinesis

95 Who discovered gene interaction by studying inheritance of shape of comb of cock?

G.J.Mendel

Bateson

Punnet

Bateson and Punnet

96 Wobble hypothesis for base pairing in codon and anticodon of RNA was given by

H.G. Khorana

R.T. Okazaki

F.H.C. Crick

T.H. Morgan

97 How many functional sites are present on ribosomes?

1 2

2 4

3 6

4 8

98 For the synthesis of three kinds of RNA, how many enzymes are needed in prokaryotes?

one

Two

Three

Four

99 In a dihybrid cross 4 types of phenotypes are obtained in F2 generation. How many types of genotypes will be in the pea plants of Tall and Red phenotypes?

3

5

4

2


100 Match List I(Gene interaction) and List II(Phenotypic ratio of F2 generation) and find the correct answer with the help of codes given below

List I(Gene Interaction) List II(Phenotypic ratio)
A. Complementary genes a. 13:3
B. Supplementart genes b.
C. Polymeric gene action c. 9:7
D. Inhibitory gene action d.

A B C D b

A B C D a

A B C D d

A B C D b

101 Translation is regulated by

Ribosome

tRNA mRNA

Aminoacyl transferases and aminoacyl synthetases

all of these

102 Select the correct statement for protein synthesis

Transalation is not simultaneous with transcription in eukaryotes.

Ribosomes in eukaryotes are attached to ER.

Ribosomes dissociate into 30S and 50S sub units in eukaryotes.

Both Transalation is not simultaneous with transcription in eukaryotes and Ribosomes in eukaryotes are attached to ER.

103 An operon is a group of structural genes whose transcription is regulated by

A promoter gene

A Regulator gene

An operator gene

Coordinated action of promoter gene, regulator gene and operator genes

104 The most common encapsulation gel matrix for development of artificial seed is

Agargel

Agarose gel

Sodium alginate

Gelrite

105 The likely cause of somaclonal variation during callus growth is

Loss of celltocell contact

Chromosomal aberrations

Change in ploidy level

All of these

106 The first androgenic haploid plant in vitro was obtained by

P.Maheshwari S.C. Maheshwari

S.G Mukherjee S.C. Maheshwari

S.G. Mukherjee R.C. Maheshwari

S.G. Mukherjee P. Maheshwari

107 Which of the following methods is not suitable to obtain somatic hybrids?

Electrofusion

PEG mediated fusion

NANO3 mediated fusion.

PVP mediated fusion

108 E.C. Cocking in 1960 isolated plant protoplasts using cellulase obatined from a fungus. What is the name of that fungus?

Helvella Crispa

Geastrum triplex

Polyporus Squamosus

Myrothecium Verrucaria

109 Which of the following pathways of micropropagation is most reliable to obtain truetotype plants?

Somatic embryogenesis

Enhanced axillary branching

Callus organogenesis

De Novo Shoot bud differentiation

110 The proof that plant cell being totipotent can develop into a complete plant was provided by

Reinert

Bajaj

Steward

Both Steward Reinert

111 The best plant growth regulator which can induce rooting in vitro raised shoots is

IBA

4D

NAA

5T

112 Which of the following is not a gelling agent suitable for plant tissue culture?

Phytagel

Gelrite

Agarose

Agar

113 What is an ideal pressure for sterilization during autoclaving of plant tissue culture medium?

15 psi

20 psi

121 psi

25 psi

114 Which of the following is not suitable for surface sterilization of an explant?

Sodium hypochlorite

Mercuric chloride

Ethyl alcohol

Methyl alcohol

115 Identify the correct series for the growth curve obtained for plant cells grown in suspension culture

Lag phase, stationary phase, Exponential phase

Stationary phase, Lag phase, Exponential phase

Lag phase, Exponential phase, Stationary phase

Exponential phase, Stationary phase, Lag phase

116 Agrobacterium tumefaciens is a

Gram positive, Saprophytic soil bacterium

Gram positive, pathogenic bacterium

Gram Negative, Saprophytic soil bacterium

Gram Negative, Pathogenic soil bacterium

117 Yeast Artificial Chromosome(YAC) can carry up to which size of cloned DNA?

20 Kb

1000 Kb

25 Kb

200 Kb

118 Cosmids are the cloning vectors which can carry cloned DNA of the size1)

10

10KB

20 Kb

40 Kb

100 Kb

119 The microarray technique is best suited for study of

Gene expression

Genome structure

Genome sequencing

Gene amplification

120 In a multination sequencing programme the India Initiative for rice genome sequencing involved which chromosomes of Japonica rice?

7

6

11

12

121 The scientist who is known for developing carotenerich "Golden Rice" using genetic engineering is

Ingo Potrykus

Barbara Mclinctok

Jeff Schell

Steven Lindow

122 The gentically modified tomato 'Flavr Savr' with delayed ripening was the result of

Overexpression of the gene for polygalacturonidase

Gene silencing by antisense RNA

Over expression of gene for ethylene biosynthesis

Overexpression of gene for ACC synthase

123 A general purpose plasmid cloning vector pBR 322 contains1)

4361 bp

4163 bp

4631 bp

4136 bp

124 Which of the following was the most important discovery for success of an automated polymerase chain reaction?

Temenism

DNA denaturation

DNA sequencing

Thermostable DNA polymerase

125 If a linear DNA with 6 copies of GAATTC sequence is digested with EcoRI, how many fragments will it produce?

5

6

7

8

126 Which of the following restriction endonucleases will have higher frequency of cut on the DNA?

Eco RI

Bam HI

Sau 3AI

Not I

127 Which of the following blotting technique is based on the name of a scientist?

Southern blotting

Western blotting

Northern blotting

All of these

128 Which of the following restriction enzymes does not produce sticky ends?

Eco RI

Alu I

Sau 3AI

Hind III

129 During agarose gel electrophoresis for separation of DNA a fluorescent dye ethidium bromide is added. On illumination with UV light the DNA fluoresces brighter while no fluorescence is observed in gel. Why?

The dye becomes dilute with buffer

The binding of dye with DNA concentrates it.

The dye is degraded in gel

None of these

130 When an impure DNA is electrophoresed on agrose gel and observed under UVlight a smear is observed on the gel. What does it indicate?

DNA is mixed with RNA

DNA is mixed with Protein

DNA is sheared

All of these

131 Arithmetic mean of first ten odd numbers will be1)

10


15


20

5

132 Select the correct formula for the calculation of combined arithmetic mean

<img src='./qimages/3399-132.jpg'>

133

<img src='./qimages/3399-133.jpg'>
5.0

11.7

0.117

1.17

134

<img src='./qimages/3399-134.jpg'>
15.00

16.00

254.00

15.94

135 Probability of throwing an even number with a die will be

1/6

1/2

1/3

1/4

136 On the basis of number of variables how many types of correlations are recognised?


1

2

3

4

137 The names of Francis Galton and Karl Pearson are associated with


Probability

Correlation

Measures of Dispersion

Harmonic Mean

138 The word Regression was used for the first time by

Sir Francis Galtom in 1877

Sir Francis Galton in 1787

Fredrick C. Mills in 1877

A.L. Bowley 1877

139 If Mode and Median of a series are 22 and 21.4 respectively, what will be the value of Arithmetic Mean?

15.99

34.30

21.10

19.33

140 Statistical averages are of how many types?


2

3

4

5

141 Karl Pearson coefficient of Correlation is calculated on the basis of measure of

Arithmetic mean

Standard deviation

Arithmetic mean and standard deviation

Median and standard deviation

142 The coefficient of variation of a series is 30% and standard deviation is 15, then its arithmetic mean is

0.5

5.0

2.0

50.00

143 Statistics diagrams are the instruments of

Analysis

Interpretation

Presentation

Collection of data

144 Method of analysis of variance was proposed by_

Sir Ronald A. Fisher(1923)

Sir Francis Galton(1877)

Wallis and Roberts(1911)

Karl Pearson(1932)

145 Select the correct formula of t-test is

<img src='./qimages/3399-145.jpg'>

146 Magnesium, iron and Molybdenum metals are present in enzymes as activators are

Cytochrome, Peptidases and Phosphotases respectively

Phosphatases, Cytochromes and Nitrogenase respectively

Fructokinase, Cytochromes and Nitrogen reductase respectively

Dehydrogenase, Kinase and Nitrate reductase respectively

147 Ribozymes were discovered by

H.G. Khurana

Carl Woese, Francis Crick and Leslie Orgel

Monad and Jacob

Thomas R. Coch and Sidney Altman

148 Which of the following statements is correct for beta oxidation of fatty acids?

Betaoxidation occurs in cytoplasm. Glyoxalate cycle in glyoxysome and succinate produced enters into mitochondria

Betaoxidation and Glyoxalate cycle occur in glyoxisome and succinate produced enters into mitochondria

Betaoxidation and glycolate cycle occur in Glyoxysome and Acetyl coA enters into mitochondria

Betaoxidation in liposomes, glyoxalate cycle occurs in peroxysome and pyruvate enters into mitochondria

149 In prokaryotes the initiation of polypeptide synthesis occurs with the binding of the leader sequence of mRNA with the 30S ribosomal sub units. The leader sequence at the end of the mRNA is called as Ribosomal Binding site(RBs) or ShineDalgarno sequence. This is

5'GAA GAAG3'


5'AGG AGGA3'

5'AGA AGAG3'

3'AAG GAAG5'

150 Which of the following methods of DNA fingerprinting does not need PCR?

RAPD

RFLP

SSR

ISSR


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