24277 + Interview Questions in Biology in Class 12 Page 396 InterviewSolution

19751.	Question : Chimera isproduceddue to :
Answer» REVERSE MUTATIONS SOMATIC mutations LETHAL mutations Pleitropic mutations Answer :B

Discussion

19752.	Question : Chief function of crista and macula is
Answer» to PERCEIVE presure to RECEIVE vibrations to MAINTAIN EQUILIBRIUM to hear Answer :C

Discussion

19753.	Question : Chief cells or zymogen cells secrete:
Answer» HCL Mucus Pepsin Trypsin Answer :C

Discussion

19754.	Question : Chief air pollutant which is likely to deplete ozone layer is
Answer» SULPHUR dioxide Carbon dioxide Carbon monoxide Nitrogen OXIDES and fluorocarbons Answer :B

Discussion

19755.	Question : Chief agent of evolution is :
Answer» NATURAL selection Mutation Acquired characters Sexual reproduction Answer :B

Discussion

19756.	Question : Chiasmata or X-shaped structures become visible during
Answer» DIPLOTENE stage Zygotene stage Pachytene stage Leptotene stage Answer :A

Discussion

19757.	Question : Chiasmata was first discovered by
Answer» MORGAN in Drosophila Beadle in Neurospora Johnson in amphibians hammerling in Acetabularia Answer :C

Discussion

19758.	Question : Chicken pox is caused by :
Answer» VARICELLA virus Adeno virus Bacteriophage-T S.V.40 virus Answer :A

Discussion

19759.	Question : Chernobyl nuclear tragedy occurred on which year ?
Answer» 1943 1945 1986 1984 Answer :C

Discussion

19760.	Question : Chiasma formation occurs in_____stage.
Answer» ANSWER :PACHYTENE

Discussion

19761.	Question : Chernobyl nuclear tragedy occurred in :
Answer» 31503 16655 April 26,1986 December 3,1984 Answer :A

Discussion

19762.	Question :Chemosynthetic bacteria obtain energy from
Answer» SUN infra RED rays organic substances INORGANIC CHEMICAL ANSWER :D

Discussion

19763.	Question : Chemosynthetic bacteria are I. Thiobacillus thiooxidus II. Spirophyllum ferrugineum III. Bacillus hydrogenes IV. Rhizobium leguminosarum
Answer» I and II II and III I,II, and III All of the above ANSWER :C

Discussion

19764.	Question : Chemosensitive area sends signals to make necessary adjustments for respiration to:
Answer» ANSWER :RESPIRATORY RHYTHM CENTRE

Discussion

19765.	Question : Chemoautotrophic bacteria resemble the photosynthetic bacteria in
Answer» OXIDISING inorganic COMPOUNDS for SYNTHESIZING ATP causing photolysis of `H_(2)O` to get H synthesizing carbohydrate through CALVIN cycle synthesize ASSIMILATORY power Answer :C

Discussion

19766.	Question : Chemosensitive area of respiratory centre in medulla is affected by
Answer» LESS `CO_2` and `H^+` IONS less `O_2` and `H^+` ions EXCESS `CO_2` and `H^+` ions excess `O_2 and H^+` ions Answer :C

Discussion

19767.	Question : Chemiosmotic theory of ATP synthesis in the mitochondrion is based on:
Answer» `CA^(++)` gradient `K^+` gradient `H^+` gradient `Na^+` gradient Answer :C

Discussion

19768.	Question : Chemiosmotic theory of ATP synthesis in chloroplasts & mitochondria is based on
Answer» MEMBRANE potential proton gradient ACCUMULATE of `Na^(+)` ACCUMULATION of `K^(+)` Answer :B

Discussion

19769.	Question : Chemiosmotic theory of ATP synthesis in chloroplast & mitochondria is proposed by
Answer» MITCHELL ARNON EMERSON Hill Answer :A

Discussion

19770.	Question : Chemiosmotic hypothesis is based on
Answer» Membrane POTENTIAL Proton GRADIENT ACCUMULATION of `K^(+)` ions Accumulation of `Na^(+)` ions ANSWER :B

Discussion

19771.	Question :Chemiosmosis requires I) A membrane II) A proton pumpIII) P roton gradient IV) ATPase
Answer» I and IV only I, II,and III only I, III and IV only I, II and IV . ANSWER :D

Discussion

19772.	Question : Chemiosmosis requires
Answer» MEMBRANE PROTON PUMP Proton GRADIENT All the above Answer :D

Discussion

19773.	Question : chemiosmotic hypothesis
Answer» Was explained by P. Mitchell Proves that proton GRADIENT is not required for ATP synthesis Explains how ATP is SYNTHESIZED in the chloroplast Both (1) & (3) Answer :D

Discussion

19774.	Question : Chemicals which provide physiological adaptations to plants against high temperature and saline conditions are
Answer» CHAPERONINS PROLINE, glycerol Betaine, SORBITAL All of these Answer :D

Discussion

19775.	Question :Chemicals which are released at the synaptic junctions are called
Answer» HORMONES NEUROTRANSMITTERS CEREBROSPINAL FLUID lymph Answer :B

Discussion

19776.	Question :Chemicals used in agriculture as fertilizer and pesticides are generally called as..........
Answer» SOLUTION :AGROCHEMICALS

Discussion

19777.	Question : Chemically, RNA is (i)_____ reactive and (ii)_____ stable as compared to DNA.
Answer» (i)EQUALLY , (II) equally (i)LESS , (ii) more (i)more , (ii)less (i)more , (ii)equally Solution :(C)

Discussion

19778.	Question : Chemicals that are released at the synaptic junction are called
Answer» CEREBROSPINAL fluids hormones lymph NEUROTRANSMITTERS ANSWER :D

Discussion

19779.	Question : Chemically hormones are:
Answer» BIOGENIC AMINES only Proteins, STEROIDS and biogenic amines Proteins only Steroids only Answer :B

Discussion

19780.	Question : Cheese contains:
Answer» PROTEIN 20-30%, FATS 20-3% fats `20-35%`, protein `20-30%` PROTEINS DOUBLE than fats fats double than proteins Answer :A

Discussion

19781.	Question : Chemically hormones are :-
Answer» PROTEINS, STEROIDS & BIOGENIC AMINES Proteins only Steroids only Biogenic amines only Answer :A

Discussion

19782.	Question : Chemically DNA is more stable than RNA - Justify
Answer» Solution :In DNA the two strands being complementary, if separated (denatured) by heating can come nrrenaturation) when appropriate condition is provided. Further 2. OH group present at every NUCLEOTIDE in RNA is a reactive group that MAKES RNA liable and easily degrddaoic NA 1S also known to be catalytic and reactive. Hence, DNA is chemically more stable and oneinicaly less reactive when compared to RNA. Presence of THYMINE INSTEAD of URACIL in DNA confers additional stability to DNA.

Discussion

19783.	Question : Chemical theory of origin of life was given by
Answer» STANLEY MILLER Oparin and HALDANE LOUIS Pasteur Spallanzani Answer :B

Discussion

19784.	Question : Chemical structure of nucleotide
Answer» SOLUTION :

Discussion

19785.	Question : Chemical substance present on the surface of sperm is
Answer» Hyalouronidase Antifertilizin AGGLUTININ Fertilizin. Answer :B

Discussion

19786.	Question : Chemical produced by mould Penicillium notatum did not allow the growth of Staphylococci bacteria, thus pencillin was established as antibiotic . Who established its effective potential ?
Answer» ALEXANDER Fleming Ernest CHAIN Ernest Chain and HOWARD Florey Fleming and waterman Answer :C

Discussion

19787.	Question : Chemical pesticides also kill the host which may lead to pest insurgence where number of pests increases after treatment.
Answer» True False Answer :PREDATORS

Discussion

19788.	Question : Chemical mutagenesis was first reported by
Answer» H.J. MULLER C. Auerbach Stadler MORGAN ANSWER :B

Discussion

19789.	Question : Chemical knife/molecular scissor of DNA is
Answer» ENDONUCLEASES Polymerases Ligases Transcriptases Solution :Endonucleases

Discussion

19790.	Question : Chemical fertilizers and Biofertilizers.
Answer» SOLUTION :

Discussion

19791.	Question : Chemical evolution
Answer» Solution :It MEANS FORMATION of DIVERSE ORGANIC molecules from inorganic constituents.

Discussion

19792.	Question : Chemical energy which is used as food by consumer organisms, in which it is released in atmosphere?
Answer» BIO ENERGY Release energy Heat PHYSICAL energy SOLUTION :Heat

Discussion

19793.	Question : Chelating agents used in culture experiments are
Answer» ELECTRON DONOR Electron acceptor Carbon donor Oxygen donor Answer :A

Discussion

19794.	Question : Cheese maturation is connected with:
Answer» ASPERGILLUS oryzae A. niger PENICILLIUM camemberti P. chrysogenum SOLUTION :Penicillium camemberti

Discussion

19795.	Question : Cheese are classified on the basis of
Answer» Flavour Colour Texture All the above Answer :D

Discussion

19796.	Question : Cheese and traditional drink Toddi are the products of which process?(A) Distillation(B) Pasturization(C) Fermentation(D) Dehydration
Answer» DISTILLATION Pasturization FERMENTATION DEHYDRATION SOLUTION :Fermentation

Discussion

19797.	Question : Choose the correct statement from the following(A) Cleistogamous flowers always exhibit autogamy(B) Chasmogamous flowers always exhibit geitonogamy(C) Cleistogamous flower exhibit both autogamy and geitonogamy(D) Chasmogamous flowers never exhibit autogamy
Answer» SOLUTION :Some PLANTS such as VIOLA, oxales and COMMELINA produce flowers which are similar to flowers of other species with exposed ANTHER and stigma

Discussion

19798.	Question : Charles Darwin returned to England in 1836 from his five year expedition and published has observations and conclu sions in a book in November:
Answer» 1838 1839 1859 1861 Solution :1859

Discussion

19799.	Question : Charles Darwin
Answer» Solution :Gave Darwin theory which STATE that USEFUL variations from the ORGANISM are SELECTED by nature Le. natural selection and GETS accumulated in the organism. This causes evolution e.g. industrial melanism, chemical resistance.

Discussion

19800.	Question : Chargaff's rule is applicable to :
Answer» Single stranded DNA Double stranded DNA Single stranded RNA All EXCEPT (3) ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Chimera isproduceddue to :

Question : Chief function of crista and macula is

Question : Chief cells or zymogen cells secrete:

Question : Chief air pollutant which is likely to deplete ozone layer is

Question : Chief agent of evolution is :

Question : Chiasmata or X-shaped structures become visible during

Question : Chiasmata was first discovered by

Question : Chicken pox is caused by :

Question : Chernobyl nuclear tragedy occurred on which year ?

Question : Chiasma formation occurs in_____stage.

Question : Chernobyl nuclear tragedy occurred in :

Question :Chemosynthetic bacteria obtain energy from

Question : Chemosynthetic bacteria are I. Thiobacillus thiooxidus II. Spirophyllum ferrugineum III. Bacillus hydrogenes IV. Rhizobium leguminosarum

Question : Chemosensitive area sends signals to make necessary adjustments for respiration to:

Question : Chemoautotrophic bacteria resemble the photosynthetic bacteria in

Question : Chemosensitive area of respiratory centre in medulla is affected by

Question : Chemiosmotic theory of ATP synthesis in the mitochondrion is based on:

Question : Chemiosmotic theory of ATP synthesis in chloroplasts & mitochondria is based on

Question : Chemiosmotic theory of ATP synthesis in chloroplast & mitochondria is proposed by

Question : Chemiosmotic hypothesis is based on

Question :Chemiosmosis requires I) A membrane II) A proton pumpIII) P roton gradient IV) ATPase

Question : Chemiosmosis requires

Question : chemiosmotic hypothesis

Question : Chemicals which provide physiological adaptations to plants against high temperature and saline conditions are

Question :Chemicals which are released at the synaptic junctions are called

Question :Chemicals used in agriculture as fertilizer and pesticides are generally called as..........

Question : Chemically, RNA is (i)_____ reactive and (ii)_____ stable as compared to DNA.

Question : Chemicals that are released at the synaptic junction are called

Question : Chemically hormones are:

Question : Cheese contains:

Question : Chemically hormones are :-

Question : Chemically DNA is more stable than RNA - Justify

Question : Chemical theory of origin of life was given by

Question : Chemical structure of nucleotide

Question : Chemical substance present on the surface of sperm is

Question : Chemical produced by mould Penicillium notatum did not allow the growth of Staphylococci bacteria, thus pencillin was established as antibiotic . Who established its effective potential ?

Question : Chemical pesticides also kill the host which may lead to pest insurgence where number of pests increases after treatment.

Question : Chemical mutagenesis was first reported by

Question : Chemical knife/molecular scissor of DNA is

Question : Chemical fertilizers and Biofertilizers.

Question : Chemical evolution

Question : Chemical energy which is used as food by consumer organisms, in which it is released in atmosphere?

Question : Chelating agents used in culture experiments are

Question : Cheese maturation is connected with:

Question : Cheese are classified on the basis of

Question : Cheese and traditional drink Toddi are the products of which process?(A) Distillation(B) Pasturization(C) Fermentation(D) Dehydration

Question : Choose the correct statement from the following(A) Cleistogamous flowers always exhibit autogamy(B) Chasmogamous flowers always exhibit geitonogamy(C) Cleistogamous flower exhibit both autogamy and geitonogamy(D) Chasmogamous flowers never exhibit autogamy

Question : Charles Darwin returned to England in 1836 from his five year expedition and published has observations and conclu sions in a book in November:

Question : Charles Darwin

Question : Chargaff's rule is applicable to :

Question : Chemically, RNA is (i)_ reactive and (ii)_ stable as compared to DNA.