Description : Splice sites are present in (A) Prokaryotic mRNA (B) Eukaryotic mRNA (C) Eukaryotic hnRNA (D) All of these
Last Answer : Answer : C
Description : Post-transcriptional modification does not occur in (A) Eukaryotic tRNA (B) Prokaryotic tRNA (C) Eukaryotic hnRNA (D) Prokaryotic mRNA
Last Answer : Answer : D
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 : Codons are present in (A) Template strand of DNA (B) mRNA (C) tRNA (D) rRNA
Last Answer : Answer : B
Description : In the following partial sequence of mRNA, a mutation of the template DNA results in a change in codon 91 to UAA. The type of mutation is 88 89 90 91 92 93 94 GUC GAC CAG UAG GGC UAA CCG (A) Missene (B) Silent (C) Nonsense (D) Frame shit
Description : The first protein synthesized by recombinant DNA technology was (A) Streptokinase (B) Human growth hormone (C) Tissue plasminogen activator (D) Human insulin
Description : 7. In a recombinant DNA technology a plasmid vector must be cleaved by a) the same enzyme that leaves the donor gene b) modified DNA ligase c) a heated alkaline solution d) four separate enzymes
Last Answer : a) the same enzyme that leaves the donor gene
Description : Mammalian RNA polymerase III synthesises (A) rRNA (B) mRNA (C) tRNA (D) hnRNA
Description : Mammalian RNA polymerase I synthesises (A) mRNA (B) rRNA (C) tRNA (D) hnRNA
Description : The smallest RNA among the following is (A) rRNA (B) hnRNA (C) mRNA (D) tRNA
Description : Methylated purines and pyrimidines are characteristically present in (A) mRNA (B) hnRNA (C) tRNA (D) rRNA
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 : Thermococcus, Methanococcus and Methano- bacterium exemplify (a) bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria (b) bacteria that ... that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled
Last Answer : (c) archaebacteria that contain protein homologous to eukaryotic core histones
Description : Why are bacteria used in recombinant DNA technology? -Biology
Last Answer : answer:
Description : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote) Reason : Both bacteria and
Last Answer : Assetion: In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or ... . If both assertion and reason are false
Description : What aspects of bacteria makes recombinant DNA technology effective?
Last Answer : Bacteria reproduce very quickly.
Description : Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology? (a) Genetic code is specific. (b) Genetic code is not ambiguous. (c) Genetic code is redundant. (d) Genetic code is nearly universal
Last Answer : (c) Genetic code is redundant.
Description : Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology? (a) Genetic code is specific. (b) Genetic code is not ambiguous. (c) Genetic code is redundant. (d) Genetic code is nearly universal.
Last Answer : (d) Genetic code is nearly universal
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 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 : Biolistics (gene-gun) is suitable for (a) disarming pathogen vectors (b) transformation of plant cells (c) constructing recombinant DNA by joining with vectors (d) DNA fingerprinting.
Last Answer : (b) transformation of plant cells
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
Last Answer : Answer : A
Description : Which form of RNA has a structure resembling clover leaf? (a) rRNA (b) hnRNA (c) mRNA (d) tRNA
Last Answer : (c) mRNA
Description : Removal of RNA polymerase III from nucleoplasm will affect the synthesis of (a) tRNA (b) hnRNA (c) mRNA (d) rRNA.
Last Answer : tRNA
Last Answer : (a) tRNA
Description : Removal of RNA polymerase III from nucleoplasm will affect the synthesis of (1) rRNA (2) tRNA (3) hnRNA (4) mRNA
Last Answer : (2) tRNA
Description : mRNA is complementary to the nucleotide sequence of (A) Coding strand (B) Ribosomal RNA (C) tRNA (D) Template strand
Description : The DNA molecule to which the gene of interest is integrated for cloning is called (a) template (b) carrier (c) transformer (d) vector.
Last Answer : (d) vector.
Description : In contrast to Eukaryotic mRNA, prokaryotic mRNA is characterized by (A) Having 7-methyl guanosine triphosphate at the 5’ end (B) Being polycystronic (C) Being only monocystronic (D) Being synthesized with introns
Description : Eukaryotic initiation factors 4A, 4B and 4F bind to (A) 40 S ribosomal subunit (B) 60 S ribosomal subunit (C) mRNA (D) Amino acyl tRNA
Description : In RNA moleule ‘Caps’ (A) Allow tRNA to be processed (B) Are unique to eukaryotic mRNA (C) Occur at the 3’ end of tRNA (D) Allow correct translation of prokaryotic mRNA
Description : Without restriction endonucleases, it would be very difficult to a. Force Plasmids into Bacteria. b. Chemically Open Dna Molecules. c. Replicate Dna In A Recombinant Cell. d. Bring About Mutations In Bacteria.
Last Answer : b. Chemically Open Dna Molecules.
Description : Polysemes do not contain (A) Protein (B) DNA (C) mRNA (D) rRNA
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
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 : Okazaki fragment is related to (A) DNA synthesis (B) Protein synthesis (C) mRNA formation (D) tRNA formation
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 : Codons are present on (A) Non-coding strand of DNA (B) hnRNA (C) tRNA (D) None of these
Description : Ribothymidine is present in (A) DNA (B) tRNA (C) rRNA (D) hnRNA
Description : Restriction endonucleases (A) Cut RNA chains at specific locations (B) Excise introns from hnRNA (C) Remove Okazaki fragments (D) Act as defensive enzymes to protect the host bacterial DNA from DNA of foreign organisms
Description : Plasmid has been used as vector because (a) it is circular DNA which have capacity to join to eukaryotic DNA (b) it can move between prokaryotic and eukaryotic cells (c) both ends show replication (d) it has antibiotic resistance gene.
Last Answer : (a) it is circular DNA which have capacity to join to eukaryotic DNA
Description : Production of a human protein in bacteria by genetic engineering is possible because (a) the human chromosome can replicate in bacterial cell (b) the mechanism of gene regulation is identical in ... ) bacterial cell can carry out the RNA splicing reactions (d) the genetic code is universal.
Last Answer : (d) the genetic code is universal.
Description : Select the incorrect statement out of the five given below about lac operon when Lactose is present in the medium. a) Gene - A gets transcribed into mRNA which produces β-galactoside permease b) ... polymerase transcribe Z-gene, Y-gene and A-gene e) Allolactose is the inducer of lac operon
Last Answer : Gene – A gets transcribed into mRNA which produces β-galactoside permease b) Inducer-Repressor complex is formed
Description : A microarray differs from a gene fusion in that, it A- carries DNA segments from many different genes B- is not constructed by cloning C- gives direct measurement of mRNA level D- all of the above
Last Answer : all of the above