24277 + Interview Questions in Biology in Class 12 Page 182 InterviewSolution

9051.	Question : RNA polymerases in eukaryotes show division of labour substantiate.
Answer» SOLUTION :a. RNA polymerase I transcribes RRNAS (28s, 18s and 5.8s) b. RNA polymerase II transcribes the precursor of mRNA(called as heterogeneous NUCLEAR RNA (hnRNA). c. RNA polymerase III HELPS in transcription of tRNA, 5sRNA and snRNAs(small nuclear RNAs).

Discussion

9052.	Question : RNA polymerase II is responsible for transcriptionof
Answer» rRNA hnRNA tRNA snRNA Answer :B

Discussion

9053.	Question : RNA polymerase I catalyzes
Answer» TRNA SYNTHESIS MRNA synthesis rRNA synthesis elongation in transcription Answer :C

Discussion

9054.	Question : RNA polymerase, discovered by Ochoa (1953) is a holoenzyme and has how many poly-peptide chains ?
Answer» 5 2 1 4 Answer :A

Discussion

9055.	Question : RNA molecules formed inside the nucleus of eukaryotes (i.e. prior or modification.)
Answer» ANSWER :PRIMARY TRANSCRIPT

Discussion

9056.	Question : RNA mutates faster than DNA because
Answer» RNA is more STABLE RNA is unstable RNA is noncatalytic RNA is LESS reactive Answer :B

Discussion

9057.	Question : RNA is not an ideal molecule as genetic meterial because ____
Answer» `2-OH` GROUP of ribose is REACTIVE and MAKES it liable It is catalytic and hence reactive Both a and b None of the above Solution :Coding strand has 5. end at the promoter REGION.

Discussion

9058.	Question : RNA is not an ideal molecule as genetic material because
Answer» 2'0H group of RIBOSE is REACTIVE and make it labile It is catalytic and HENCE reactive Both OPTION 1 and OPTION 2 None of the above Answer :C

Discussion

9059.	Question : RNA is labile and easily degradable and unstable due to
Answer» Presence of FREE 2' OH Presence of uracil Presence of single STRANDED binding proteins All EXCEPT (3) ANSWER :D

Discussion

9060.	Question : RNA is genetic material in ……………..
Answer» bacteria plant VIRUSES fungi NONE of the above Solution :plant viruses

Discussion

9061.	Question : RNA is the genetic material in
Answer» prokaryotes eukaryotes Tobacco MOSAIC VIRUS (TMV) E.coli. Solution :(C)

Discussion

9062.	Question : RNA interference involves
Answer» SYNTHESIS of CDNA and RNA using REVERSE transcriptase silencing of specific mRNA due to COMPLEMENTARY RNA interference of RNA in synthesis of DNA synthesis of mRNA from DNA Answer :B

Discussion

9063.	Question : RNA interference method involves
Answer» SILENCING of a specific in RNA DUE to a COMPLEMENTARY ssRNA Silencing of a specific tRNA due to a complementary dsRNA Silencing of a specific mRNA due to a complementary ssRNA Silencing of a specific mRNA due to a complementary dsRNA Answer :D

Discussion

9064.	Question : RNA interference is essential for
Answer» CELL DEFENCE Cell PROLIFERATION Cell differentiation Micropropagation SOLUTION :Cell defence

Discussion

9065.	Question : RNA granules found in neurons are
Answer» NISSL's granules Axons Islets of Langerhans Crypts of Leiberkuhn Answer :A

Discussion

9066.	Question :RNA has the bases
Answer» a] ADENINE, GUANINE, THYMINE and Cytosine b] Adenine, Guanine, Thymine and Uracil c] Adenine, Uracil, Thymine and Cytosine d] Adenine, Guanine, Uracil and Cytosine ANSWER :D

Discussion

9067.	Question : RNA and DNA were artificially synthesised in vitro by
Answer» OCHOA and Nirenberg Ochoa and Kornbergkornberg and Nirenberg Answer :D

Discussion

9068.	Question : RNA acted upon by enzyme
Answer» RIBOZYME ribonuclease peptidal transferase All of these Answer :B

Discussion

9069.	Question : RNA and DNA are similar in :
Answer» Having SIMILAR sugars Having similar PYRIMIDINE base Being CAPABLE to replicate Being POLYMERS of nucleotide Answer :D

Discussion

9070.	Question : Rising of dough is due to
Answer» Multiplication of yeast Production of `CO_(2)` Emulsification Hydrolysis of wheat flour STARCH into sugars. Solution :Production of `CO_(2)` The rising of dough is due to the production of `CO_(2)` MAKING the dough spongy. Dough for making dosa and idli is FERMENTED by bacteria while the dough for making bread is fermented by fungi Saccharomyces cerevisiae (Baker.s yeast). Multiplication of yeast does not causes rising effect. Emulsification is a mixture of TWO or more IMMISCIBLE liquids. Hydrolysis of wheat flour starch into sugar is simply digestion or simplification.

Discussion

9071.	Question : 'Rivet - popper ' hypothesis was given by :
Answer» DAVID Tilman Paul Ehrlich ALEXANDER HUMBOLDT E.P. Odum Answer :B

Discussion

9072.	Question : Rise in ventricular pressure during ventricular systole leads to closure of atrioventricular valves which generates
Answer» LUB sound Dub sound Third HEART sound Heart murmurs Answer :A

Discussion

9073.	Question : Rinku with a circular DNA contains sequence 5' larr GGATTCC to3' 3' larr CCTTAAGG to5' She wishes to add a new segment of DNA into it. a. Identify the technology she planned. b. Suggest the specific enzyme to make a cut in the DNA with above sequence. c. Name the ctegory of enzyme your suggested. d. How this enzyme identifies the sequence? e. Draw the cut ends of the DNA with sequence.
Answer» Solution :a. RECOMBINANT DNA technology b. Restriction ENZYMES . e.g. EcoRI c. Restriction ENDONUCLEASES d. Each restriction endonucleases recognises aspecific palindromci nu-clecotide SEQUENCE.

Discussion

9074.	Question : Ringworms are caused by:
Answer» I. Wuchereria II. Microsporum III. Haemophilus IV. Epidermophyton Answer :C

Discussion

9075.	Question : Ringworm is caused by:
Answer» TRICHOPHYTON EPIDERMOPHYTON Both of these NONE of these Answer :C

Discussion

9076.	Question : Ringworm is caused by ............
Answer» PLASMODIUM FUNGUS Bacteria Virus SOLUTION :Fungus

Discussion

9077.	Question : Ringworm is a disease occurred by fungus,Trichophyton. R - Ringworm spreads due to use of towel, cloth and combs of infectious people.
Answer» S & R are TRUE. R is an EXPLANATION of S. S&R are True. R is not the explanation of S. S is True & R is FALSE. S is False & R is True. Solution :S & R are True. R is not the explanation of S

Discussion

9078.	Question : Ringworm in humans is caused by
Answer» Bacteria Fungi NEMATODES Viruses Answer :B

Discussion

9079.	Question : Ringing (girdling) experiment cannot be performed in
Answer» Sugarcane Mango Indian RUBBER plant Tectona Answer :A

Discussion

9080.	Question :Ringing experiment can not be done on a sugar cane plant because
Answer» Its xylem is SCANTY Its phloem is with out phloem parenchyma Its vascular BUNDLES are scattered Its phloem is present INSIDE the xylem Answer :C

Discussion

9081.	Question : Rigor mortis is caused due to
Answer» Breakdown of cross-BRIDGES between actins and myosins Lack of ATP and phosphocreatine Sustained cross bridges between actins and myosins Both (2) & (3) Answer :D

Discussion

9082.	Question : Rima glottidis is the opening in between
Answer» EXTERNAL NARES internal nares conchae vocal FOLDS ANSWER :D

Discussion

9083.	Question : Rigidity muscle after death is called____.
Answer» ANSWER :Rigormortis

Discussion

9084.	Question : Right-shift of oxygen-haemoglobin dissociation curve can occur due to
Answer» HIGH pH Low TEMPERATURE High `H^+` concentration Low `pCO_2` ANSWER :C

Discussion

9085.	Question : Right to Clean Water is a fundanmental right, under the Indian Constitution
Answer» ARTICLE 12 Article 21 Article 31 Article 41 Solution :Article 31

Discussion

9086.	Question : Right - handedness is dominant over left- handedness . Most probable gene types having two right - handed parents , a left handed child are
Answer» RR X RR RR x Rr Rr x Rr All of these ANSWER :C

Discussion

9087.	Question : Right atrium of heart of mammal receives blood from
Answer» SINUS venosus Pulmonary veins Pulmonary aorta Precaval VEIN and postcaval vein Answer :D

Discussion

9088.	Question : Rickets and Kwashiorkor are:
Answer» DEFICIENCY disease Hereditary disease Communicable disease None of these Answer :A

Discussion

9089.	Question : Richmond-Lang effect can be observed in plants by The treatment of:
Answer» Auxins Gibberellins Kinetin Ethylene Answer :C

Discussion

9090.	Question : Rice variety named ADT-37 is formed as a result of cross between
Answer» Oryza JAPONICA `XX` O. INDICES Oryza astevium `xx` O. vulgare Oryza sativa `xx` O. japonica NONE of the above ANSWER :A

Discussion

9091.	Question : Rice variety containing over five times iron is made possible due to …….
Answer» TISSUE culture Single CELL protein Biofortification Mutation ANSWER :C

Discussion

9092.	Question : Riccia fluitans multiplies vegetatively by
Answer» RHIZOIDS Tubers Adventitious branches Gemmae Answer :3

Discussion

9093.	Question : Ribosomes are composed of two subunits, the smaller subunit of a ribosome has a binding site for …………………… and the larger subunit has two binding sites for two ……………..
Answer» SOLUTION :MRNA, TRNA

Discussion

9094.	Question : Ribosomes are also called as
Answer» Palade particles Oxysomes F0-F1 particles Cristae Answer :A

Discussion

9095.	Question :Ribosomal RNA synthesis takes place in
Answer» NUCLEOPLASM Nucleus Nucleolus Cytoplasm Answer :C

Discussion

9096.	Question : Ribose sugar is present in
Answer» RNA POLYMERASE and ATP RNA and ATP RNA polymerase, RNA and ATP RNA only Answer :B

Discussion

9097.	Question : Rhodopsin is a constituent of :
Answer» CORNEA Chorojd RODS Cones Answer :A

Discussion

9098.	Question : Rhizopus reproduces asexually by:
Answer» CONIDIA Spores Gemma Bulbil Answer :D

Discussion

9099.	Question : Rhizophora,a mangrove plant, shows _______ germination.
Answer» epigeal hypogeal vivipary Imbition Answer :VIVIPAROUS

Discussion

9100.	Question : Rhizomes growing vertically upward·are called ____
Answer» Corn Stolon Bulbil Root stock Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : RNA polymerases in eukaryotes show division of labour substantiate.

Question : RNA polymerase II is responsible for transcriptionof

Question : RNA polymerase I catalyzes

Question : RNA polymerase, discovered by Ochoa (1953) is a holoenzyme and has how many poly-peptide chains ?

Question : RNA molecules formed inside the nucleus of eukaryotes (i.e. prior or modification.)

Question : RNA mutates faster than DNA because

Question : RNA is not an ideal molecule as genetic meterial because ____

Question : RNA is not an ideal molecule as genetic material because

Question : RNA is labile and easily degradable and unstable due to

Question : RNA is genetic material in ……………..

Question : RNA is the genetic material in

Question : RNA interference involves

Question : RNA interference method involves

Question : RNA interference is essential for

Question : RNA granules found in neurons are

Question :RNA has the bases

Question : RNA and DNA were artificially synthesised in vitro by

Question : RNA acted upon by enzyme

Question : RNA and DNA are similar in :

Question : Rising of dough is due to

Question : 'Rivet - popper ' hypothesis was given by :

Question : Rise in ventricular pressure during ventricular systole leads to closure of atrioventricular valves which generates

Question : Ringworms are caused by:

Question : Ringworm is caused by:

Question : Ringworm is caused by ............

Question : Ringworm is a disease occurred by fungus,Trichophyton. R - Ringworm spreads due to use of towel, cloth and combs of infectious people.

Question : Ringworm in humans is caused by

Question : Ringing (girdling) experiment cannot be performed in

Question :Ringing experiment can not be done on a sugar cane plant because

Question : Rigor mortis is caused due to

Question : Rima glottidis is the opening in between

Question : Rigidity muscle after death is called____.

Question : Right-shift of oxygen-haemoglobin dissociation curve can occur due to

Question : Right to Clean Water is a fundanmental right, under the Indian Constitution

Question : Right - handedness is dominant over left- handedness . Most probable gene types having two right - handed parents , a left handed child are

Question : Right atrium of heart of mammal receives blood from

Question : Rickets and Kwashiorkor are:

Question : Richmond-Lang effect can be observed in plants by The treatment of:

Question : Rice variety named ADT-37 is formed as a result of cross between

Question : Rice variety containing over five times iron is made possible due to …….

Question : Riccia fluitans multiplies vegetatively by

Question : Ribosomes are composed of two subunits, the smaller subunit of a ribosome has a binding site for …………………… and the larger subunit has two binding sites for two ……………..

Question : Ribosomes are also called as

Question :Ribosomal RNA synthesis takes place in

Question : Ribose sugar is present in

Question : Rhodopsin is a constituent of :

Question : Rhizopus reproduces asexually by:

Question : Rhizophora,a mangrove plant, shows _______ germination.

Question : Rhizomes growing vertically upward·are called ____