1) Methionine is specified by a. Stop codon b. AUG c. Start codon d. Both b and c
|
||||
2) In mitochondria UGA is/specifies as a. Stop codon b. Tryptophan c. Initiation codon d. Methionine
|
||||
3) Three nucleotide sequence on tRNA that specifies an amino acis is a. Codon b. Anticodon c. Nonsense codon d. Genetic code
|
||||
4) Initiation complex in translation is composed of a. Ribosome and aminoacyl-tRNA b. Ribosome and tRNA c. tRNA and aminoacyl-tRNA d. None of these
|
||||
5) Examples of chromosomal aberrations are a. Sickle cell anemia b. Phenylketonuria c. Down's syndrome d. Both a and b
|
||||
6) Point mutations are represented as a. Presence of an extra chromosome b. Loss of chromosome c. Alteration in sequence of DNA nucleotide d. Insertions and inversion of genes
|
||||
7) Strand of DNA which is not transcribed is called a. Antisense b. Template c. Coding d. None of these
|
||||
8) Phenylketonuria is due to deficiency of a. Phenylalnine b. Phenylalanine hydroxylase c. Phenylene d. All of these
|
||||
9) Molecular basis of sickle cell anaemia was found by a. F. Sanger b. Beadle and Tatum c. Vernone Ingram d. Mendal
|
||||
10) Which is incorrect about nucleosome a. 2 turns of DNA coiled round histones b. 8 histones as acidic proteins c. 200 nucleotides in one nucleosome d. None of these
|
||||
11) Sex chromosomes were 1' discovered in a. Man b. Pea plant c. Fruitfly d. None of these
|
||||
12) A sugarcane cell has _________ chromosomes. a. 20 b. 32 c. 40 d. 80
|
||||
13) Centromere represents a. Primary constriction b. Secondary constriction c. Tertiary constriction d. Quaternary constriction
|
||||
14) Wich of the following cal kill mice if injected separately? a. Live R type pneumococcus b. Heat killed R type pneumococcus c. Live S type pneumococcus d. Heat killed S type pneumococcus
|
||||
15) X-Ray diffraction pattern of DNA was prepared by a. Rosalind Franklin b. Maurice Wilkins c. Watson d. Crick
|
||||
16) In sickle cell Hb, which chain is affected? a. Alpha chain b. Beta Chain c. Both of these d. None of these
|
||||
17) Recombinant DNA contains DNA from a. 2 different sources b. 3 different sources c. 2 same sources d. 3 same sources
|
||||
18) First restriction enzyme was isolated by a. Kary Mullis b. Hamilton O. Smith c. Maxam Gilbert d. Hamilton John
|
||||
19) Commonly used restriction enzyme is a. pSC 101 b. pBR 322 c. EcoRI d. All of these
|
||||
20) Natural extrachromosomal circular DNA molecules earrying genes for antibiotic resistance and fertility a. Recombinant DNA b. Chimaeric DNA c. Lambda phage d. Plasmids
|
||||
21) Which one has antibiotic resistance gene for tetracycline and ampicillin? a. pSC 101 b. pBR 322 c. pCR 322 d. None of these
|
||||
22) The enzyme which seals the foreign DNA into the vector is a. Restriction endonuclease b. DNA polymerase c. DNA ligase d. DNA mutase
|
||||
23) Chimaeric DNA is also known as a. Recombinant DNA b. Complementary DNA c. Vector d. Plasmid
|
||||
24) Lambda phage is a. Virus b. Bacterium c. Plasmid d. Host cell
|
||||
25) A genomic library is a collection of a. Bacterial clones b. Bacteriophage clones c. Viral clones d. Both a and b
|
||||
26) A single stranded nucleotide sequence that will hybridize into a certain piece of DNA is a. Primer b. Probe c. Genome d. Both a & b
|
||||
27) Which statement is not true about PCR? a. Developed by Kary Mullis b. Take its name from DNA polymerase c. Is not very specific d. Taq polymerase is used
|
||||
28) Taq polymerase is extracted from a bacterium a. Floral aquaticus b. Taq aquaticus c. Thermus floral d. Thermus aquaticus
|
||||
29) DNA analysis is done to a. Diagnose viral infections b. Identify criminals c. Determine evolution d. All of these
|
||||
30) A method of DNA sequencing in which DNA threads are chemically cut into pieces of different sizes is a. Sanger's method b. Maxam-Gilbert method c. Hamilton's method d. Vortex method
|
||||
31) Human genome is ______ times larger than any other genome sequenced so far a. 45 b. 35 c. 25 d. 15
|
||||
32) Organisms that have had a foreign gene inserted into them are a. Transformed organisms b. Transgenic organisms c. Transfigured organisms d. Recombinant organisms
|
||||
33) Some transgenic bacteria produce a dipeptide sweetener called a. Ultrasweet b. Disweet c. Monosweet d. Neutrasweet
|
||||
34) Transgenic plants are produced when foreign genes are introduced into a. Mature plant embryo b. Immature plant embryo c. Roots d. Leaves
|
||||
35) Protoplasts are plant cells from which a. Cell walls are removed b. Nucleus is removed c. New organelles are added d. Vacuoles are taken out
|
||||
36) A weed engineered to produce a biodegradable plastic in cell granules is a. Mouse-cat cress b. Mouse weed c. Mouse-eared cress d. None of these
|
||||
37) An antibody made by soybeans can be used to treat a. Herpes zoster b. Sickle cell anemia c. Measles d. Genital berpes
|
||||
38) In vortex method of transgenic animals gene is inserted a. By hand b. Into egg c. Both by hands and into eggs d. Is not applicable
|
||||
39) For biotechnology products which is the preferable vehicle a. Urine b. Milk c. Sweet d. Hairs
|
||||
40) Cumulus cells are those that a. Remain with follicular cells after ovulation occurs b. Form corpus luteum c. Form lining of the ovary d. Cling to the egg after ovulation occurs
|
||||
41) Two methods for gene therapy are a. In-vivo and ex-vitro b. Ex-vivo and in-vivo c. Both of these d. None of these
|
||||
42) In cystic fibrosis patient lacks a gene for the transmembrane carrier of the a. Magnesium ion b. Calcium ion c. Cholesterol d. Chloride ion
|
||||
43) Plasmid do not carry gene for a. Antibiotic resistance b. Fertility c. Growth d. Both b and c
|
||||
44) Full set of genes of an individual is called a. Genotype b. Genomic library c. Genome pool d. Genome
|
||||
45) Substance used to terminate DNA at different points in Sanger's method is a. Deoxyribonucleotide triphosphate b. Dideoxyribonucleotide triphosphate c. Deoxyribonucleotide triphosphate d. Dideoxyribonucleoside triphosphate
|
||||
46) Transgenic bacteria are produced in large vats called a. Transducer b. Biomultiplier c. Bioreactor d. Culture media
|
||||
47) Which of the following is correct about SCID? a. Common in children as well as in adults b. It is an immune disorder c. Is due to deficiency of adenosine diaminase d. Both b and c
|
||||
48) Tissue culture does not involve a. Growth of tissue in artificial medium b. Asexual reproduction c. Use of meristem d. Use of generative nucleus in pollen culture
|
||||
49) Plants are totipotent because a. Each cell has full genetic potential of the organism b. A single cell could become a complete plant c. Both a and b d. Because they have lesser potential for tissue culturing
|
||||
50) Coconut milk contains the plant hormone a. Auxins b. Cytokinins c. Gibberallins d. All of these
|