Description : The adipose tissue lacks the enzyme _____________. a. Glycerol Kinase. b. Lipase. c. Glycerol Synthetase. d. Pyrophosphatase.
Last Answer : a. Glycerol Kinase.
Description : The ‘rho’ (ρ) factor is involved (A) To increase the rate of RNA synthesis (B) In binding catabolite repressor to the promoter region (C) In proper termination of transcription (D) To allow proper initiation of transcriptide
Last Answer : Answer : C
Description : Unidirectional tandem gene arrays are significant in ________ a. Increase in recombinant gene product with increasing plasmid number. b. Increase in recombinant gene product without increasing plasmid ... increasing plasmid numbers. d. Decrease in strong promotor with increase in plasmid number
Last Answer : b. Increase in recombinant gene product without increasing plasmid number.
Description : Lactose or its analogues act as positive regulators of lac operon by (A) Attaching to i gene and preventing its expression (B) Increasing the synthesis of catabolite gene activator protein (C) ... holoenzyme (D) Binding to repressor subunits so that the repressor cannot attach to the operator locus
Last Answer : Answer : D
Description : Binding of RNA polymerase holoenzyme to the promoter region of lac operon is facilitated by (A) Catabolite gene activator protein (CAP) (B) cAMP (C) CAP-cAMP complex (D) None of these
Description : The process of replication in plasmid DNA, other than initiation, is controlled by (a) mitochondrial gene (b) plasmid gene (c) bacterial gene (d) none of these.
Last Answer : c) bacterial gene
Description : Mutations in promoter regions of genes can cause (A) Premature termination of translation (B) Change in reading frame of downstream structural gene (C) Decreased efficiency of transcription (D) All of these
Description : The ribosome binding site A- forms a stem-loop structure in the RNA B- is located upstream of the promoter sequence C- .is located immediately upstream of the start codon D- is more likely to be associated with an operon than with a gene encoding a single protein
Last Answer : .is located immediately upstream of the start codon
Description : The rivosome binding site A- forms a sltem- loop structure in the RNA B- is located upstream of the promoter sequence C- is located immediately upstream of the start codon D- is more likely to be associated with an operon than with a gene encoding a single protein
Last Answer : is located immediately upstream of the start codon
Description : In transgenics, expression of transgene in target tissue is determined by (a) enhancer (b) transgene (c) promoter (d) reporter.
Last Answer : (d) reporter.
Description : A substance which increases the efficiency of a catalyst is termed as: A. Promoter (Answer) B. Activator C. Retarder D. Super catalyst
Last Answer : A. Promoter (Answer)
Description : Adipose tissue lacks (A) Hormone-sensitive lipase (B) Glycerol kinase (C) cAMP-dependent protein kinase (D) Glycerol-3-phosphate dehydrogenase
Last Answer : Answer : B
Description : After termination of the synthesis of RNA molecule, the core enzymes separate from the DNA template. The core enzymes then recognize a promoter at which the synthesis of a new RNA molecule commences, with the assistance of (A) Rho (ρ) factor (B) δ factor (C) β factor (D) σ factor
Description : Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains
Description : A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved ... Siloxane elastomers (B) Polyamides (C) Vinyl polymers (D) Urea-formaldehyde resins
Last Answer : (D) Urea-formaldehyde resins
Description : .In protein synthesis, the polymerisation of amino acids involves three steps. Which one of the following is not involved in the polymerisation of protein ? (a) Termination (b) Initiation (c) Elongation (d) Transcription
Last Answer : (a) Termination
Description : In protein synthesis, the polymerisation of amino acids involves three steps. Which one of the following is not involved in the polymerisation of protein ? (a) Termination (b) Initiation (c) Elongation (d) Transcription
Last Answer : Transcription
Description : eIF-4 B (A) Binds to 3’ chain initiation codon on mRNA (B) Binds to 3’ end of mRNA (C) Binds to 5’ end of mRNA (D) Unwinds mRNA near its 5’ end
Description : Initiation codon of protein synthesis (in eukaryotes) is (a) GUA (b) GCA (c) CCA (d) AUG.
Last Answer : (a) GUA
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 : (d) AUG.
Description : Initiation codon in eukaryotes is (a) GAU (b) AGU (c) AUG (d) UAG
Last Answer : (c) AUG
Description : .Which of the following is initiation codon? (a) UAG (b) AUC (c) AUG (d) CCU
Description : Difference between termination signal and stop codon. -Biology
Last Answer : answer:
Description : Which of the termination codon is called amber? A- UAA B- UAG C- UGA D- AUG
Last Answer : UAG
Description : What is Gene Bank or Gene Library ?
Last Answer : A gene bank or gene library is a clone of all the genes in an organism. In this case the genomic DNA is cut into pieces by the Restriction Enzyme and inserted into the cloning vector and a population of ... of a genome (a set of genes in an organism) is called a gene bank or gene library.
Description : What is the chemical composition of a gene called ?
Last Answer : The chemical structure of a gene is called DNA .
Description : What are large randomly repeating non-coding DNA stretches called as? a. Satellite DNA b. Micro arrays c. Gene d. Allele
Last Answer : a. Satellite DNA
Description : Proteomes provide a link between organism’s ________ a. Mutations and recombination b. Gene products and its regulators c. Genetics and physiology d. Tandem repeats and introns
Last Answer : c. Genetics and physiology
Description : Following is not the clotting factor ___________ a. Fibrinogen b. Prothrombin c. Hageman factor d. Ferritin
Last Answer : d. Ferritin
Description : The enzymes encoded by z, y and a genes of lac operon are inducible, and their inducer is (A) Lactose (B) Allo-lactose (C) Catabolite gene activator protein (D) All of these
Description : The catabolite repression is mediated by a catabolite gene activator protein (CAP) in conjunction with (A) AMP (B) GMP (C) cAMP (D) Cgmp
Description : Antibiotic resistance gene in a plasmid cloning vector -Biology
Description : Antibiotic resistance gene in plasmid -Biology
Description : The plasmid pBR322 has (A) Ampicillin resistance gene (B) Tetracycline resistance gene (C) Both (A) and (B) (D) None of these
Description : Which one of the following vectors is used to replace the defective gene in gene therapy? (a) Adenovirus (b) Cosmid (c) Ri plasmid (d) Ti plasmid
Last Answer : (a) Adenovirus
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 : The linking of antibiotic resistance gene with the plasmid vector became possible with (a) DNA polymerase (b) exonucleases (c) DNA ligase (d) endonucleases.
Last Answer : (c) DNA ligase
Description : In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (i-iv) in this regard and select the correct option about which one or more of these ... ii) and (iv) (b) (i) only (c) (i) and (iii) (d) (ii) and (iv)
Last Answer : (d) (ii) and (iv)
Description : A gene whose expression helps to identify transformed cell is known as (a) vector (b) plasmid (c) structural gene (d) selectable marker.
Last Answer : (d) selectable marker.
Description : n bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.
Last Answer : (a) extra chromosomal material
Description : In bacteria, plasmid is (a) extra chromosomal material (b) main DNA (c) non functional DNA (d) repetitive gene.
Description : Which of the following defines an open reading frame (ORF)? A.A sequence of genome in bacteriophage B.The sequence of a complete genome C.A plasmid vector used in genome sequencing D.A possible gene predicted by DNA sequencing
Last Answer : D.A possible gene predicted by DNA sequencing
Description : Which of the following defines an open reading frame (ORF)? A- .A sequence of genome in bacteriophage B- The sequence of a complete genome C- A plasmid vector used in genome sequencing D- .A possible gene predicted by DNA sequencing
Last Answer : .A possible gene predicted by DNA sequencing
Description : When composite transposons are formed A- a small deletion occurs in the transposase gene of an IS element B- a small deletion occurs in the transposase gene of an IS element and plasmid is ... a plasmid D- two IS elements integrate into a chromosome with only a small distance separating them
Last Answer : two IS elements integrate into a chromosome with only a small distance separating them
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