Description : A segment of DNA that codes for a specific characters
Last Answer : Ans. Gene
Description : .Expressed Sequence Tags (ESTs) refers to (a) novel DNA sequences (b) genes expressed as RNA (c) polypeptide expression (d) DNA polymorphism.
Last Answer : (b) genes expressed as RNA
Description : Triplet sequence found in mRNA which codes for single amino acid
Last Answer : Ans. Codon
Description : The process of synthesizing multiple copies of a particular DNA sequence
Last Answer : Ans. Gene cloning
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 : The primary structure of a protein refers to : (a) whether the protein is fibrous or globular (b) the amino acid sequence in the polypeptide chain (c) the orientation of the amino acid side chains in space (d) the presence or absence of an α-helix
Last Answer : the amino acid sequence in the polypeptide chain
Description : The interaction between the mRNA and tRNA determined the position of amino acid in a polypeptide sequence. This is called the A- stagerivity B- Wobble hypothesis C- Promiscuity D- adaptor hypothesis
Last Answer : adaptor hypothesis
Description : In prokaryotes, chloramphenicol (A) Causes premature release of the polypeptide chain (B) Causes misreading of the mRNA (C) Depolymerises DNA (D) Inhibits peptidyl transferase activity
Last Answer : Answer : A
Description : Tetracylin prevents synthesis of polypeptide by (A) Blocking mRNA formation from DNA (B) Releasing peptides from mRNA-tRNA complex (C) Competing with mRNA for ribosomal binding sites (D) Preventing binding of aminoacyl tRNA
Last Answer : Answer : D
Description : The smallest unit of DNA capable of coding for the synthesis of a polypeptide is (A) Operon (B) Repressor gene (C) Cistron (D) Replicon
Last Answer : Answer : C
Description : A group of genes whose activity is coordinated by a DNA site is – (1) operon (2) cistron (3) polysome (4) polypeptide
Last Answer : (1) operon Explanation: The operon is defined as a group of genes whose activity is coordinated by a DNA site. An operon is a functioning unit of genomic DNA containing a cluster ... together in the cytoplasm, or undergo trans-splicing to create monocistronic mR-NAs that are translated separately.
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 : A group of genes whose activity is coordinated by a DNA site is called: (1) operon (2) cistron (3) polysome (4) polypeptide
Last Answer : operon
Description : What is antisense technology? (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene (b) RNA polymerase producing DNA (c) A cell displaying a foreign antigen used for synthesis of antigens (d) Production of somaclonal variants in tissue cultures
Last Answer : (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene
Description : The restriction enzymes are used in genetic engineering, because (a) they can cut DNA at specific base sequence (b) they are nucleases that cut DNA at variable sites (c) they can degrade harmful proteins (d) they can join different DNA fragments.
Last Answer : (a) they can cut DNA at specific base sequence
Description : Restriction endonucleases are enzymes which (a) make cuts at specific positions within the DNA molecule (b) recognize a specific nucleotide sequence for binding of DNA ligase (c) restrict the action of the enzyme DNA polymerase (d) remove nucleotides from the ends of the DNA molecule
Last Answer : (a) make cuts at specific positions within the DNA molecule
Description : Following statements describe the characteristics of the enzyme restriction endonuclease. Identify the incorrect statement. (a) The enzyme recognises a specific palindromic nucleotide sequence in the DNA. (b) ... (d) The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
Last Answer : (c) The enzyme binds DNA at specific sites and cuts only one of the two strands.
Description : A series of illustrated cards flashed before a group in proper sequence to tell a complete story step by step to the group of the learners.
Last Answer : Ans. Flash cards
Description : Triplet sequence in t-RNA
Last Answer : Ans. Anticodon
Description : In what sequence are the following obtained from a natural gas well? 1. Natural Gas 2. Water 3. Crude oil Codes: (a) 1, 3, 2 (b) 1, 2, 3 (c) 3, 2, 1 (d) 2, 1, 3
Last Answer : Ans:(a)
Description : Process of replacing the sequence of lines of codes is known as: a. Expanding die macro b. Expanding tri macro c. Tetra macro d. None of these
Last Answer : a. Expanding die macro
Description : The following steps of case-study have been jumbled with each other 1.Focus of study 2. Identification of Cause effect symptoms 3. Remedy for adjustment 4. Follow-up programme 5. Data collection The correct sequence in above steps is codes: ... 5, 2 and 3 C) 1, 2, 3, 4 and 5 D) 5, 4, 3, 2 and 1
Last Answer : A) 1, 5, 2, 3 and 4
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 : DNA amplification is done in the machine
Last Answer : Ans. Thermocycler
Description : The process of producing a protein from its DNA- and mRNA-coding sequences.
Last Answer : Ans. Gene expression
Description : A single DNA molecule condensed into a compact structure in vivo by complexing with accessory histones or histone-like proteins.
Last Answer : Ans. Chromosome
Description : A DNA element which has the ability to move from one chromosomal position to another
Last Answer : Ans. Jumping gene
Description : The molecule which helps in decoding genetic information carried by DNA
Last Answer : Ans. RNA
Description : DNA was 1 st synthesized by
Last Answer : Ans. A. Kornberg (1953)
Description : A method for transforming DNA especially useful of plant cells
Last Answer : Ans. Electroporation
Description : Applied use of molecular biology and recombinant DNA Technology known as
Last Answer : Ans. Biotechnology
Description : The process of using information (genetic material) from DNA to construct m-RNA
Last Answer : Ans. Transcription
Description : The double helix model of DNA proposed by
Last Answer : Ans. Watson and Crick (1953)
Description : The stage of DNA synthesis in mitosis
Last Answer : Ans. Interphase
Description : Double helix model of DNA was proposed by
Description : The form of DNA present in living organisms
Last Answer : Ans. B-form
Description : Single stranded DNA
Last Answer : Ans. Bacteriophage
Description : Who discovered the base composition of DNA?
Last Answer : Ans. Chargaff (1953)
Description : When a paper folds ones or twice with detail information on specific aspects is called as
Last Answer : Ans. Folder
Description : A specific way adopted by the communicator to communicate his message effectively so that whole message is understood by maximum number of audience.
Last Answer : Ans. Treatment of message
Description : An exact genetic replica of a specific gene or an entire organism.
Last Answer : Ans. Clone
Description : A method for improving specific traits i.e. plant height, disease resistancy
Last Answer : Ans. Pedigree method
Description : Intra-specific hybridization is a crossed between
Last Answer : Ans. Two plant of different varieties
Description : What is a piece of DNA that codes for a particular protein?
Last Answer : A piece of DNA that codes for a particular protein is called agene.
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 triplet in DNA codes for valine ? A. CTT B. AGU C. CAT D. AAT E. None of these (Answer)
Last Answer : E. None of these (Answer)
Description : Satellite DNA is important because it (a) does not code for proteins and is same in all members of the population (b) codes for enzymes needed for DNA replication (c) codes for proteins ... and also the same degree of polymorphism in an individual, which is heritable from parents to children.
Last Answer : (d) shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children
Description : Suicide Hackers are those _________ a) who break a system for some specific purpose with or without keeping in mind that they may suffer long term imprisonment due to their malicious activity ... digital footprints d) who are employed in an organization to do malicious activities on other firms
Last Answer : a) who break a system for some specific purpose with or without keeping in mind that they may suffer long term imprisonment due to their malicious activity