Description : If the codon UAC on mRNA changes into UAG as a result of a base substitution in DNA, it will result in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Nonsense mutation (D) Frameshift mutation
Last Answer : Answer : C
Description : The nonsense codon(s) is/are A-UAG B-UAA C-UGA D-all of these
Last Answer : all of these
Description : The terminal codons are (a) AUG, GUG, GUC (b) UAG, UAA, AGA (c) UAA, UAC, AUG (d) UAA, UAG, UUA
Last Answer : (b) UAG, UAA, AGA
Description : Which of the four data sets have more dispersion? (A) 88 91 90 92 89 91 (B) 0 1 1 0 –1 –2 (C) 3 5 2 4 1 5 (D) 0 5 8 10 –2 –8
Last Answer : Answer: D
Description : A silent mutation is most likely to result from (A) Substitution of the first base of a codon (B) Substitution of the third base of a codon (C) Conversion of a nonsense codon into a sense codon (D) Conversion of a sense codon into a nonsense codon
Last Answer : Answer : B
Description : The codon which serves as translation start signal is (A) AUG (B) UAG (C) UGA (D) UAA
Last Answer : Answer : A
Description : Which one of the following is the starter codon? (a) UAA (b) UAG (c) AUG (d) UGA
Last Answer : (c) AUG
Description : Which of the termination codon is called amber? A- UAA B- UAG C- UGA D- AUG
Last Answer : UAG
Description : Which stop codon has been found to encode selenocysteine? A- UAA B- UAG C- UGA D-.AGA
Last Answer : UGA
Description : One mg of Lycopodium spores used in quantitative microscopy contains an average of (A) 94,000 spores (B) 92,000 spores (C) 90,000 spores (D) 91,000 spores
Last Answer : (A) 94,000 spores
Description : The system of "Memorandum of Understanding” (MoU) was introduced in - (1) 1989 - 90 (2) 1990 - 91 (3) 1987 - 88 (4) 1988 - 89
Last Answer : (3) 1987 - 88 Explanation: The System of Memorandum of Understanding was introduced in the Public Sector Enterprises during the year 1987-88 in India. It was based on the report of the Arjuna Sengupta Committee (1984).
Description : The system of “Memorandum of Understanding” (MoU) was introduced in (1) 1989 – 90 (2) 1990 – 91 (3) 1987 – 88 (4) 1988 – 89
Last Answer : 1987 – 88
Description : Substitution of a base can result in a (A) Silent mutation (B) Mis-sense mutation (C) Nonsense mutation(D) All of these
Last Answer : Answer : D
Description : In biosynthesis of proteins the chain terminating codons are (A) UAA, UAG and UGA (B) UGG, UGU and AGU (C) AAU, AAG and GAU (D) GCG, GCA and GCU
Description : If the unit weight of sand particles is 2.696 g/cc. and porosity in loose state is 44%, the critical hydraulic gradient for quick sand condition, is (A) 0.91 (B) 0.92 (C) 0.93 (D) 0.95
Last Answer : (D) 0.95
Description : UAG is a. Start codon b. Stop codon c. Open frame d. End frame
Last Answer : b. Stop codon
Description : Sequence of AAT GCT TAG GCA on template segment of DNA will be represented over the transcribed mRNA as
Last Answer : Sequence of AAT GCT TAG GCA on template segment of DNA will be represented over the transcribed mRNA as A. ... C. UUA CGA AUC CGU D. TTA CGA ATC CGT
Description : What is the average of 96 95 92 89 88?
Last Answer : 92
Description : What is the approximate percentage of candidates successful to enrolled from institute A? a) 92 b) 89 c) 86 d) 96 e) 88
Last Answer : c) 86
Description : Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) ... completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs
Last Answer : (d) Palindromic sequence of base pairs
Description : 67,74,78,?,92,94 a) 86 b) 85 c) 83 d) 84 e) 88
Last Answer : The next term is obtained by adding the unit’s digit to the number. Hence the missing number =78+8=86 Answer: a)
Description : The codons causing chain termination are (a) AGT, TAG, UGA (b) UAG, UGA, UAA (c) TAG, TAA, TGA (d) GAT, AAT, AGT
Last Answer : (b) UAG, UGA, UAA
Last Answer : b) UAG, UGA, UAA
Description : mRNA is complementary to the nucleotide sequence of (A) Coding strand (B) Ribosomal RNA (C) tRNA (D) Template strand
Description : All the following statements about recognition of a codon on mRNA by an anticodon on tRNA are correct except (A) The recognition of the third base of the codon is not very precise (B) ... degeneracy of the genetic code (D) Wobble results in incorporation of incorrect amino acids in the protein
Description : Amino acid sequence of the encoded protein is not changed in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Both (A) and (B) (D) None of these
Description : Synthesis of RNA and a DNA template is known as (A) Replication (B) Translation (C) Transcription (D) Mutation
Description : Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at ... asphyxiate is ≥ __________ percent. (A) 84 (B) 88 (C) 80 (D) 92
Last Answer : (A) 84
Description : For production of eukaryotic protein by recombinant DNA technology in bacteria, the template used is (A) Eukaryotic gene (B) hnRNA (C) mRNA (D) All of these
Description : Codons are present in (A) Template strand of DNA (B) mRNA (C) tRNA (D) rRNA
Description : If the fare of Rajdhani Exp is Rs. 350 and that of Sapt Kranti Exp is Rs. 450 for all classes of passenger then what is the total income of both the trains during 2011 to 2013? 1) Rs. 95 crore 2) Rs. 98 crore 3) Rs. 90 crore 4) Rs. 89 crore 5) Rs. 92.5 crore
Last Answer : 5) Rs. 92.5 crore
Description : A part of an mrna has the base sequence gca. which change to this sequence would indicate a missense mutation?
Last Answer : A missense mutation is the change in a single nucleotide that results in a different amino acid being coded for. GCA codes for the amino acid Alanine. Therefore any of the following changes would be missense ... acid GUA -> Valine GGA -> Glycine CCA -> Proline UCA -> Serine ACA -> Threonine
Description : Thalassemia is an example of – (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation
Last Answer : (4) Frame shift mutation Explanation: Frame shift mutations are associated with Thalassemia. They involve a deletion or insertion of one' or two base pairs within a coding sequence of a gene. As ... and deletions, the reading frame of mRNA is altered resulting in a nonsense sequence of amino acids.
Description : Thalassemia is an example of (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation
Last Answer : Frame shift mutation
Description : Nonsense codons are present on (A) mRNA (B) tRNA (C) rRNA (D) None of these
Description : What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and ... ) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.
Last Answer : (b) Two polypeptides of 24 and 25 amino acids will be formed.
Description : .What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA? (a) A polypeptide of 24 amino acids will be formed. (b) Two polypeptides of 24 and ... ) A polypeptide of 49 amino acids will be formed. (d) A polypeptide of 25 amino acids will be formed.
Last Answer : (a) A polypeptide of 24 amino acids will be formed.
Description : Which one of the following could NOT cause a change in the mRNA ―reading frame‖? a. Insertion Sequence b. Base-Pair Substitution c. Base Addition d. Base Deletion
Last Answer : b. Base-Pair Substitution
Description : Termination of the synthesis of the RNA molecule is signaled by a sequence in the template strand of the DNA molecule, a signal that is recognized by a termination protein, the (A) Rho (ρ) factor (B) σ factor (C) δ factor (D) ε factor
Description : What is the name given to the process in which a strand of DNA is used as a template for the manufacture of a strand of pre mRNA?
Last Answer : transcription
Description : mRNA is synthesised on DNA template in which direction? (a) 5′ → 3′ (b) 3′ → 5′ (c) Both (a) and (b) (d) Any
Last Answer : a) 5′ → 3′
Last Answer : (a) 5′ → 3′
Description : Which of the following act as the blueprint or template for the process of protein synthesis that takes place on ribosomes? A.rRNA B.DNA C.tRNA D.mRNA
Last Answer : mRNA
Description : Which of the following serves as a terminal codon? (a) UAG (b) AGA (c) AUG (d) GCG
Last Answer : b) AGA
Description : .Initiation codon in eukaryotes is (a) GAU (b) AGU (c) AUG (d) UAG
Last Answer : d) UAG
Description : Which of the following is initiation codon? (a) UAG (b) AUC (c) AUG (d) CCU
Last Answer : b) AUC
Last Answer : a) UAG