26' The proofreading of newly synthesized DNA, to excise incorrect nucleotides which have been
inserted, is done by:
A. Restriction endonucleases
B. DNA gyrase
C. DNAligase
D. DNApolymerase III
27. which of the following statements is FALSE conceming a mating between F+ and F cell?
A the F cell is converted to an F+ cell
B. the F+ oell is converted to an F- cell
C. ohromosomal genes are rarely transferred
D. the genes involved in pilus forrnation are tansferred at high frequency
28. Which is the correct order, &om smallest to largest number of base pairs?
A. plasmid, tansposon chromosomal DNA
B. chromosomal DNA, transposon, plasmid
C. tansposo4 plasmid, chromosomal DNA
D. plasmid, chromosomal DNA, transposon
29. which of the following statements about the use of mass spectrometry in protein
investigation is NOT correct?
A, Mass spectrometry involves ionized molecules in the gas phase
B. Mass spectrometry is used for analysing the sequence of peptides
C, Ionic fragments are separated according to their ratio in Mass spectrometry
D. Mass spectrometry involves the separation of ionic fragments on a gel
30. ultra violet light can damage a DNA stand causing
A. two adjacent purine residue to form a covalently bounded dimer
B. two adjacent pyrimidine residues to form covalently bonded dimer
C. disruption of phosphodiesterase linkage
D. disruption of non-covalent linkage
31. Repressor binds to DNA sequence and regulates the tanscription. This sequence is called
A. Attenuator
B. Terminator
C, Anti-terminator
D. Operator
32. Antibiotics such as Ciprofloxacin and Flouroquinolines work by inhibiting a specific enzyme.
This enzyme is normally necessary to relieve torsional strain that is caused by the unwinding
of the helix. What is the name of this enzyme?
A. DNA ligase
B. Topoisomerase (DNA Gyrase)
C, Single-stranded binding protein
D. Primase
33. The region of DNA known as TATA BOX is the site for binding of
A. DNA polymerase
B. DNA topoisomerase
C. DNA dependent RNA polymerase
D. Polynucleotide phosphorylase
34. Once transcribed, eukaryotic mRNA typically undergoes substantial alteration that results
primarily from
A. excision of introns
B. union with ribosomes
C. linkage to histone molecules
D. fusion into circular forms known as plasmids
35. Protein secondary structures such as o helices and p sheets are stabilized mainly by
A. disulfide bond formation
B. Van der Waals forces
C. hydrogen bond formation
D. hydrophobic interactions
36. When you measure the amount of a protein in a solution by UV absorbance, you are actually
detecting the UV absorbance of predominantly which amino acid?
A. Tryptophan
B. Arginine
C. Methionine
D. Histidine
37 .lf 10 gn of sodium chloride (NaCl; FW 58.44) are dissolved into 100 ml of water, what is the
molar concentration of sodium chloride in the solution?
A. 0.17
B. 0.58
c. l.7l
D. 5.84
38. As far as the absorbance of DNA at260nlrn is concerned, which of the following is correct?
A. individual nucleotidePss DNA>dsDNA
B. dsDNA>ssDNA> individual nucleotides
C. ssDNA>dsDNA> individual nucleotides
D. absorbance remains same
39. The enzyme that catalyzes peptide bond between two amino acids is located in the
A. smaller subunit of Ribosome
B. larger subunit of Ribosome
C. leader region of mRNA
D. central part of IRNA
40. Which of the following promoters has been used in Barnase-Barstar system in genetic
engineering for pollination control?
A. CalvIv35S
B. P-Nos
C. TA-29
D. PPR-10
41. Which of the following database is exclusively designed to study Protein-Protein Interactions
(PPI)?
A. Pubmed
B. STRING
C. SWISS-MODEL Repository
D. Protein Databank (PDB)
42. Gregor Mendel's approach to the study of heredity was effective for several reasons.
Compared to previous geneticists, the unique characteristics of Mendel work was
A. choosing the garden pea for his experiment
B. crossing true-breeding plants
C. producing hybrids
D. keeping records of numbers of different progeny
43. Bacterial gastroenteritis is the disease of major concern in relation to consumption foods such
as meats, poultry, and eggs. Often, the onset of symptoms occurs after an incubation time as
short as eight hours. The organism associated with such food spoilage is
A. Bacillus cereus
B. Cyclospora cayetanensis
C. Escherichia coli
D. Salmonella enteritidis
44. Various species of fungi provide a unique opportunity for tetrad analysis because
A. they have two mating types
B. they multiply rapidly
C. they can grow vegetatively as haploids
D. they house all four haploid products of each meiosis in ascus
45. Which out of the following is a peptide antibiotic?
A. Erythrromycin
B. Grarnicidin
C. Ciprofloxacin
D. Tetracycline
46. Strigolactone, a recently discovered plant hormone plays a great role in the regulation of
A. fruit ripening
B. cell division
C. cell death
D. shoot branching
47.The archaebacteria can tolerate extremes of heat and pH due to
A. the presence of branched chain lipids in the cell membrane
B. the absence of peptidoglycans in the cell walls
C. the presence of an extra layer of of capsule around the cell walls
D. being the most ancient organisms
48. What is common component among: ATP, FAD and NAD?
A. Phenolic Acid
B. Adenine
C. A heme group
D. Flavin
49. Identify insectivorous plant
A. Physalis
B. Elaeis
C. Sarracenia
D. Euphorbia
50. Bat pollinated flowers are called
A. Anemophilous
B. Chiropterophilous
C. Hydrophilous
D. Entmophilous
51. The most commonly microorganism associated during the early stages of production of
diff€rent typ€s of cheese world over is
A. Geotrichum candidam
B. Iactococcas lactis
C. Iactobacillrc plantarum
D. Pediococcus cerevisiae
52. Phenyl alanhe is similar to tyrosine in the sarne way that
A. Phe is similar to Trp
B. Ser is similar to Thr
C. Ala is similar Ser
D. Val is similar to Thr
53. In the liquid fomr of water how many hydmge,lr bonds can potentially takes plaoe?
A. one
B. Two
C. Three
D. Four
54. The Henderson-Hasselbalch equation:
A. Relates the pH of a solution to the pKa and the concentrations of acid and conjugate base
B. Does not explain the behavior of di- or tri-basic weak acids
C. Employs the same value for pKa for all weak acids
D, Is equally useful with solutions of acetic acid and hydrochloric acid
55. The light reaction of photosynthesis DOES NOT include
A. Chemiosmosis
B. Charge Separation
C. Electron transport
D. Oxygen liberation
56. An organism grown in the presence of 1-14 C-labeled glucose produced isopropyl alcohol as
the major product and has labeled carbons at I and 3. What does the result indicate?
A. Isopropyl alcohol results from the tail-to-tail condensation of acetyl CoA, followed by
decarb4rlation.
B. Isopropyl alcohol results frorn the head-to-tail condensation of acetyl CoA, followed by
decuboxylation.
C. Isoprophyl alcohol rcsults from the tail-to-tail oondensation of pynnrate followed by
decarboxylation.
D. Isopropyl alcohol resulb Aom head-to-tail condensation of pynwate followed by
decarboxylation
57 . A characteristic feature of a panmictic population is:
A. Gene erosion
B. Genetic drift
C. Gene pooling
D. Genetic balance
58. How many microspores would be produced from 200 actively dividing microspore mother
cells during the process of microsporogenesis in a maturing anther lobe:
A. 50
B. 200
c. 400
D. 800
59. The chromosomes in which DNA replicates innumerable times with no cytokinesis:
A. Meiotic chromosomes
B. Mitotic chromosomes
C. Polytene chromosomes
D. Polyploid chromosomes
60. The ploidy of matured endosperm cells is:
A.N
B. 2n
C. 3n
D. 4n
61. Pappus of Compositae is a modification of
A. Calyx
B. Corolla
C. Androecium
D. Bracts
62. A potentially stable and heritable change in gene expression that occurs without a change in
DNA sequence is called
A. functional genomics
B. epigenetics
C. association genetics
D. Mendelian genetics
63. The edible part in Garlic is
A. Leaves
B. Stem
C. Bracts
D. Stipules
64. Largest number of cultured bacteria belong to the phylum
A. Deinococcus
B. Firmicutes
C. Bacteroidetes
D. Proteobacteria
65. Identify an organisms containing bacteriochlorophyll_g
A. Chromatium
B. Rhodopseudomonas
C. Heliobacter
D. Chlorobium
66' one of the following platforms is used for whole cell fingerprinting
A. FT-IR
B. GC-MS
C. LC.MS
D. MALDI-TOF
67 ' TERMNAL FLOWER I (TFLI), a meristem identity gene, is a marker for----
A. shoot apical meristem
B. root apical meristem
C. inflorescence meristem
D. floral meristem
68' If the new leaves are pale green, turn yellow-green as they enlarge; plants growth; show sparse lack fruits or with few fruits, pale in color the plants are said to be deficient in
A. Nitrogen
B. Copper
C. Boron
D. Magnesium
69' Starch is insoluble in water. Yet it is accumulated in large quantities in potato tubers because:
A. soil microorganisms deposit starch in tubers
B. it is synthesized in potato tuber itself
C. it is translocated from the leaves to the fubers in the forrr of sugars
D. it is useful for tuber consumption
70. Isoschizomers are
A. restriction endonucleases isolated from different organisms and cleave within the same
target sequences
B. different enzymes having same isoelectric point
C. difflerent enzymes having common coenzymes
D. different enzymes having common prosthetic group
71. Photolyase is a
A. light activated peptidase
B. light activated enzyme involved in photosynthesis
C. DNA repair enzyme
D. Phtorespiratory enzyme
72.Hypoxanthin is resulted from of Adenine
A. alkylation
B. deamination
C. adduct formation
D. epoxidation
73. Marshall Nirenberg and Heinrich Matthaei offered the direct evidence that
A. RNA sequences code for specific amino acids
B. DNA is genetic material
C. Proteins are synthesized from N-terminal end to C-terminal end
D. Proteins are synthesized from C-terminal end to N-terminal end
74. Cyathium inflorescence found in the genus
A. Ficus
B. Ricinus
C. Euphorbia
D. Ocimum
75. What is SMART ?
A. A curated collection of protein domain
B. It is an abbreviation of Sequence of Monomers fue Repeating Ten-times in a DNA
molecule
C. tt is an abbreviation of Sequence of Microsatellite Amplified RT-PCR product
D. It is a gene prediction software
inserted, is done by:
A. Restriction endonucleases
B. DNA gyrase
C. DNAligase
D. DNApolymerase III
27. which of the following statements is FALSE conceming a mating between F+ and F cell?
A the F cell is converted to an F+ cell
B. the F+ oell is converted to an F- cell
C. ohromosomal genes are rarely transferred
D. the genes involved in pilus forrnation are tansferred at high frequency
28. Which is the correct order, &om smallest to largest number of base pairs?
A. plasmid, tansposon chromosomal DNA
B. chromosomal DNA, transposon, plasmid
C. tansposo4 plasmid, chromosomal DNA
D. plasmid, chromosomal DNA, transposon
29. which of the following statements about the use of mass spectrometry in protein
investigation is NOT correct?
A, Mass spectrometry involves ionized molecules in the gas phase
B. Mass spectrometry is used for analysing the sequence of peptides
C, Ionic fragments are separated according to their ratio in Mass spectrometry
D. Mass spectrometry involves the separation of ionic fragments on a gel
30. ultra violet light can damage a DNA stand causing
A. two adjacent purine residue to form a covalently bounded dimer
B. two adjacent pyrimidine residues to form covalently bonded dimer
C. disruption of phosphodiesterase linkage
D. disruption of non-covalent linkage
31. Repressor binds to DNA sequence and regulates the tanscription. This sequence is called
A. Attenuator
B. Terminator
C, Anti-terminator
D. Operator
32. Antibiotics such as Ciprofloxacin and Flouroquinolines work by inhibiting a specific enzyme.
This enzyme is normally necessary to relieve torsional strain that is caused by the unwinding
of the helix. What is the name of this enzyme?
A. DNA ligase
B. Topoisomerase (DNA Gyrase)
C, Single-stranded binding protein
D. Primase
33. The region of DNA known as TATA BOX is the site for binding of
A. DNA polymerase
B. DNA topoisomerase
C. DNA dependent RNA polymerase
D. Polynucleotide phosphorylase
34. Once transcribed, eukaryotic mRNA typically undergoes substantial alteration that results
primarily from
A. excision of introns
B. union with ribosomes
C. linkage to histone molecules
D. fusion into circular forms known as plasmids
35. Protein secondary structures such as o helices and p sheets are stabilized mainly by
A. disulfide bond formation
B. Van der Waals forces
C. hydrogen bond formation
D. hydrophobic interactions
36. When you measure the amount of a protein in a solution by UV absorbance, you are actually
detecting the UV absorbance of predominantly which amino acid?
A. Tryptophan
B. Arginine
C. Methionine
D. Histidine
37 .lf 10 gn of sodium chloride (NaCl; FW 58.44) are dissolved into 100 ml of water, what is the
molar concentration of sodium chloride in the solution?
A. 0.17
B. 0.58
c. l.7l
D. 5.84
38. As far as the absorbance of DNA at260nlrn is concerned, which of the following is correct?
A. individual nucleotidePss DNA>dsDNA
B. dsDNA>ssDNA> individual nucleotides
C. ssDNA>dsDNA> individual nucleotides
D. absorbance remains same
39. The enzyme that catalyzes peptide bond between two amino acids is located in the
A. smaller subunit of Ribosome
B. larger subunit of Ribosome
C. leader region of mRNA
D. central part of IRNA
40. Which of the following promoters has been used in Barnase-Barstar system in genetic
engineering for pollination control?
A. CalvIv35S
B. P-Nos
C. TA-29
D. PPR-10
41. Which of the following database is exclusively designed to study Protein-Protein Interactions
(PPI)?
A. Pubmed
B. STRING
C. SWISS-MODEL Repository
D. Protein Databank (PDB)
42. Gregor Mendel's approach to the study of heredity was effective for several reasons.
Compared to previous geneticists, the unique characteristics of Mendel work was
A. choosing the garden pea for his experiment
B. crossing true-breeding plants
C. producing hybrids
D. keeping records of numbers of different progeny
43. Bacterial gastroenteritis is the disease of major concern in relation to consumption foods such
as meats, poultry, and eggs. Often, the onset of symptoms occurs after an incubation time as
short as eight hours. The organism associated with such food spoilage is
A. Bacillus cereus
B. Cyclospora cayetanensis
C. Escherichia coli
D. Salmonella enteritidis
44. Various species of fungi provide a unique opportunity for tetrad analysis because
A. they have two mating types
B. they multiply rapidly
C. they can grow vegetatively as haploids
D. they house all four haploid products of each meiosis in ascus
45. Which out of the following is a peptide antibiotic?
A. Erythrromycin
B. Grarnicidin
C. Ciprofloxacin
D. Tetracycline
46. Strigolactone, a recently discovered plant hormone plays a great role in the regulation of
A. fruit ripening
B. cell division
C. cell death
D. shoot branching
47.The archaebacteria can tolerate extremes of heat and pH due to
A. the presence of branched chain lipids in the cell membrane
B. the absence of peptidoglycans in the cell walls
C. the presence of an extra layer of of capsule around the cell walls
D. being the most ancient organisms
48. What is common component among: ATP, FAD and NAD?
A. Phenolic Acid
B. Adenine
C. A heme group
D. Flavin
49. Identify insectivorous plant
A. Physalis
B. Elaeis
C. Sarracenia
D. Euphorbia
50. Bat pollinated flowers are called
A. Anemophilous
B. Chiropterophilous
C. Hydrophilous
D. Entmophilous
51. The most commonly microorganism associated during the early stages of production of
diff€rent typ€s of cheese world over is
A. Geotrichum candidam
B. Iactococcas lactis
C. Iactobacillrc plantarum
D. Pediococcus cerevisiae
52. Phenyl alanhe is similar to tyrosine in the sarne way that
A. Phe is similar to Trp
B. Ser is similar to Thr
C. Ala is similar Ser
D. Val is similar to Thr
53. In the liquid fomr of water how many hydmge,lr bonds can potentially takes plaoe?
A. one
B. Two
C. Three
D. Four
54. The Henderson-Hasselbalch equation:
A. Relates the pH of a solution to the pKa and the concentrations of acid and conjugate base
B. Does not explain the behavior of di- or tri-basic weak acids
C. Employs the same value for pKa for all weak acids
D, Is equally useful with solutions of acetic acid and hydrochloric acid
55. The light reaction of photosynthesis DOES NOT include
A. Chemiosmosis
B. Charge Separation
C. Electron transport
D. Oxygen liberation
56. An organism grown in the presence of 1-14 C-labeled glucose produced isopropyl alcohol as
the major product and has labeled carbons at I and 3. What does the result indicate?
A. Isopropyl alcohol results from the tail-to-tail condensation of acetyl CoA, followed by
decarb4rlation.
B. Isopropyl alcohol results frorn the head-to-tail condensation of acetyl CoA, followed by
decuboxylation.
C. Isoprophyl alcohol rcsults from the tail-to-tail oondensation of pynnrate followed by
decarboxylation.
D. Isopropyl alcohol resulb Aom head-to-tail condensation of pynwate followed by
decarboxylation
57 . A characteristic feature of a panmictic population is:
A. Gene erosion
B. Genetic drift
C. Gene pooling
D. Genetic balance
58. How many microspores would be produced from 200 actively dividing microspore mother
cells during the process of microsporogenesis in a maturing anther lobe:
A. 50
B. 200
c. 400
D. 800
59. The chromosomes in which DNA replicates innumerable times with no cytokinesis:
A. Meiotic chromosomes
B. Mitotic chromosomes
C. Polytene chromosomes
D. Polyploid chromosomes
60. The ploidy of matured endosperm cells is:
A.N
B. 2n
C. 3n
D. 4n
61. Pappus of Compositae is a modification of
A. Calyx
B. Corolla
C. Androecium
D. Bracts
62. A potentially stable and heritable change in gene expression that occurs without a change in
DNA sequence is called
A. functional genomics
B. epigenetics
C. association genetics
D. Mendelian genetics
63. The edible part in Garlic is
A. Leaves
B. Stem
C. Bracts
D. Stipules
64. Largest number of cultured bacteria belong to the phylum
A. Deinococcus
B. Firmicutes
C. Bacteroidetes
D. Proteobacteria
65. Identify an organisms containing bacteriochlorophyll_g
A. Chromatium
B. Rhodopseudomonas
C. Heliobacter
D. Chlorobium
66' one of the following platforms is used for whole cell fingerprinting
A. FT-IR
B. GC-MS
C. LC.MS
D. MALDI-TOF
67 ' TERMNAL FLOWER I (TFLI), a meristem identity gene, is a marker for----
A. shoot apical meristem
B. root apical meristem
C. inflorescence meristem
D. floral meristem
68' If the new leaves are pale green, turn yellow-green as they enlarge; plants growth; show sparse lack fruits or with few fruits, pale in color the plants are said to be deficient in
A. Nitrogen
B. Copper
C. Boron
D. Magnesium
69' Starch is insoluble in water. Yet it is accumulated in large quantities in potato tubers because:
A. soil microorganisms deposit starch in tubers
B. it is synthesized in potato tuber itself
C. it is translocated from the leaves to the fubers in the forrr of sugars
D. it is useful for tuber consumption
70. Isoschizomers are
A. restriction endonucleases isolated from different organisms and cleave within the same
target sequences
B. different enzymes having same isoelectric point
C. difflerent enzymes having common coenzymes
D. different enzymes having common prosthetic group
71. Photolyase is a
A. light activated peptidase
B. light activated enzyme involved in photosynthesis
C. DNA repair enzyme
D. Phtorespiratory enzyme
72.Hypoxanthin is resulted from of Adenine
A. alkylation
B. deamination
C. adduct formation
D. epoxidation
73. Marshall Nirenberg and Heinrich Matthaei offered the direct evidence that
A. RNA sequences code for specific amino acids
B. DNA is genetic material
C. Proteins are synthesized from N-terminal end to C-terminal end
D. Proteins are synthesized from C-terminal end to N-terminal end
74. Cyathium inflorescence found in the genus
A. Ficus
B. Ricinus
C. Euphorbia
D. Ocimum
75. What is SMART ?
A. A curated collection of protein domain
B. It is an abbreviation of Sequence of Monomers fue Repeating Ten-times in a DNA
molecule
C. tt is an abbreviation of Sequence of Microsatellite Amplified RT-PCR product
D. It is a gene prediction software
No comments:
Post a Comment