Description : The genetic code operates via (A) The protein moiety of DNA (B) The base sequences of DNA (C) The nucleotide sequence of mRNA (D) The base sequence of tRNA
Last Answer : Answer : C
Description : The role of molecular chaperones is to A-facilitate binding of ribosomes to mRNA B-degrade newly synthesized polypeptides that contain inaccurate sequences C-.facilitate binding of RNA polymerase to DNA D-aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : -aid a newly synthesized polypeptide in folding to its proper shape
Last Answer : aid a newly synthesized polypeptide in folding to its proper shape
Description : What is complementary mRNA sequences for DNA bases A-T-C-A-G-G?
Last Answer : What is the answer ?
Description : Cistron is a) The coding sequence of DNA b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA d) The sequences which are removed during RNA splicing.
Last Answer : b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA
Description : Anticodons are present on (A) Coding strand of DNA (B) mRNA (C) tRNA (D) rRNA
Description : What will be the sequence of mRNA produced by the following stretch of DNA? 3′ATGCATGCATGCATG5′TEMPLATE STRAND 5′ TACGTACGTACGTAC3′ CODING STRAND (a) 3′AUGCAUGCAUGCAUG5′ (b) 5′UACGUACGUACGUAC 3′ (c) 3′ UACGUACGUACGUAC 5′ (d) 5′ AUGCAUGCAUGCAUG 3
Last Answer : d) 5′ AUGCAUGCAUGCAUG 3′
Description : An important step in protein synthesis is transcription. Which of the following statement(s) is/are true concerning this process? a. The first step in gene transcription involves separating the double helix ... nucleus to the cytoplasm d. Only one protein can be produced from an initial mRNA strand
Last Answer : Answer: c Transcription of a gene begins at an initiation site associated with a specific DNA sequence, termed a promoter region. After binding to DNA, the RNA polymerase opens up a short ... different proteins from the same gene. mRNA is exported from the nucleus only after processing is complete
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 : RNA transcription is more complex in eukaryotes because it is first made as a primary RNA transcript that contains intron and exon sequences. What kind of modification must occur to produce a mature mRNA?
Last Answer : RNA splicing. Introns must be removed and exons are spliced together to form a mature RNA transcript.
Description : The coding sequences in lac operon include (A) i gene (B) i gene, operator locus and promoter (C) z, y and a genes (D) i, z, y and a genes
Last Answer : Answer : D
Description : Non-coding sequences in a gene are known as (A) Cistrons (B) Nonsense codons (C) Introns (D) Exons
Description : Introns in genes (A) Encode the amino acids which are removed during post-translational modification (B) Encode signal sequences which are removed before secretion of the proteins (C) Are the non-coding sequences which are not translated (D) Are the sequences that intervene between two genes
Description : In split genes, the coding sequences are called (a) exons (b) cistrons (c) introns (d) operons
Last Answer : (d) operons.
Description : In split genes, the coding sequences are called (a) exons (b) cistrons (c) introns (d) operons.
Last Answer : (a) exons
Description : The coding sequences found in split genes are called a) Operons b) introns c) exons d) cistrons
Last Answer : c) exons
Description : 8. Non coding sequences present within a gene is called: (a) Exon (b) Operon (c) Promoter (d) Intron
Last Answer : (d) Intron
Description : 4. In split genes the coding sequences are called (a)introns (b)operons (c)exons (d)cistrons
Last Answer : (c)exons
Description : Polysemes do not contain (A) Protein (B) DNA (C) mRNA (D) rRNA
Last Answer : Answer : B
Description : Translation is the formation of (A) DNA from DNA (B) mRNA from DNA (C) Protein through mRNA (D) mRNA from pre mRNA
Description : Transcription is the formation of (A) DNA from a parent DNA (B) mRNA from a parent mRNA (C) pre mRNA from DNA (D) protein through mRNA
Description : From DNA the genetic message is transcribed into this compound: (A) Protein (B) mRNA (C) tRNA (D) rRNA
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 : Okazaki fragment is related to (A) DNA synthesis (B) Protein synthesis (C) mRNA formation (D) tRNA formation
Last Answer : Answer : A
Description : The mushroom poison amanitin is an inhibitor of (A) Protein synthesis (B) mRNA synthesis (C) DNA synthesis (D) Adenosine synthesis
Description : Genetic information of nuclear DNA is transmitted to the site of protein synthesis by (A) rRNA (B) mRNA (C) tRNA (D) Polysomes
Last Answer : D
Description : Which one of the following is wrongly matched? (a) Transcription - Writing information from DNA to tRNA. (b) Translation - Using information in mRNA to make protein. (c) Repressor protein - Binds to operator to stop enzyme synthesis. (d) Operon - Structural genes, operator and promoter.
Last Answer : (c) Repressor protein - Binds to operator to stop enzyme synthesis.
Description : The transforming principle of Pneumococcus as found out by Avery, MacLeod and McCarty was (a) mRNA (b) DNA (c) protein (d) polysaccharide. (
Last Answer : (c) protein
Last Answer : (d) Operon - Structural genes, operator and promoter
Description : The transforming principle of Pneumococcus as found out by Avery, MacLeod and McCarty was (a) mRNA (b) DNA (c) protein (d) polysaccharide
Last Answer : (b) DNA
Description : DNA mRNA C Proposed by Protein A B The figure gives an important concept in the genetic implication of DNA. Fill the blanks A, B and C. (a) A-Maurice Wilkins, B-Transcription, C-Translation ... c) A-Erwin Chargaff, B-Translation, C-Replication (d) A-Francis Crick, B-Translation, C-Transcription
Last Answer : (d) A-Francis Crick, B-Translation, C-Transcription
Description : The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C. DNA mRNA Proposed by Protein C A B (a) A - Transcription, B -Translation, C - Francis Crick (b) ... , B - Replication, C - James Watson (d) A - Translation, B - Transcription, C - Ervin Chargaff
Last Answer : (a) A - Transcription, B -Translation, C - Francis Crick
Description : Which does NOT occur in a cell stimulated by a steroid hormone? A) The steroid hormone enters the cell by crossing the plasma membrane. B) The hormone binds to a receptor molecule in the ... activates certain genes. E) DNA is transcribed, mRNA is translated, and the result is protein synthesis.
Last Answer : C) The second messenger cyclic AMP is stimulated by the hormone-receptor complex. D) The hormone-receptor complex binds the chromatin and activates certain genes.
Description : Francis Crick’s seminal concept that in nature genetic information generally flows from DNA to RNA to protein.
Last Answer : Ans. Central Dogma
Description : mRNA is complementary to the nucleotide sequence of (A) Coding strand (B) Ribosomal RNA (C) tRNA (D) Template strand
Description : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA? (a) AGGUAUCGCAU (b) UGGTUTCGCAT (c) ACCUAUGCGAU (d) UCCAUAGCGUA
Last Answer : (c) ACCUAUGCGAU
Description : AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA ? (1) AGGUAUCGCAU (2) UGGTUTCGCAT (3) ACCUAUGCGAU (4) UCCAUAGCGUA
Last Answer : (1) AGGUAUCGCAU
Description : A library composed of complementary copies of cellular mRNA
Last Answer : Ans. cDNA
Description : Triplet sequence found in mRNA which codes for single amino acid
Last Answer : Ans. Codon
Description : Silencing of mRNA has been used in producing transgenic plants resistant to (a) boll worms (b) nematodes (c) white rusts (d) bacterial blights.
Last Answer : (b) nematodes
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 : What is the process called of making a mRNA copy of DNA? a. translation. b. transcription. c. transposon d. transformation
Last Answer : b. transcription.
Description : Fodder producing tree
Last Answer : Ans. Prosopis cineraria
Description : Leading Mango producing state having maximum area under mango
Last Answer : Ans. Uttar pradesh
Description : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during S phase.
Last Answer : $ The regular sequences of a cell cycle is `G_(1),S,G_(2),M` and C ! Replication of DNA occurs during ... , R is wrong D. If both As and R are wrong.
Description : DNA finger printing is based on the presence in DNA of (A) Constant number of tandem repeats (B) Varibale number of tandem repeats (C) Non-repititive sequences in each DNA (D) Introns in eukaryotic DNA
Description : Yeast artificial chromosome can be used to amplify DNA sequences of the size (A) Upto 10 kb (B) Upto 45 kb (C) Upto 100 kb (D) Upto 1,000 kb
Description : Polymerase chain reaction can rapidly amplify DNA sequences of the size (A) Upto 10 kilobases (B) Upto 45 kilobases (C) Upto 100 kilobases(D) Upto 1,000 kilobases
Description : All of the following statements about restriction endonucleases are true except: (A) They are present in bacteria (B) They act on double stranded DNA (C) They recognize palindromic sequences (D) They always produce sticky ends
Description : Restriction endonucleases can recognise (A) Palindromic sequences (B) Chimeric DNA (C) DNA-RNA hybrids (D) Homopolymer sequences