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If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 17 of Quiz-1438 (Que-ID : 2960)
If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?
- ATGCATGCA
- AUGCAUGCA
- TACTACGT
- UACGUACGU
Ans → (c)TACTACGT
Explanation → The sequence of bases on complementary strand TACTACGT
This question is taken from this post → Molecular basis of inheritance (class 12th Biology) Revision Test | MCQs For NEET - attemp/practice
More MCQs in - Molecular basis of inheritance (class 12th Biology) Revision Test | MCQs For NEET
Q. 1 of Quiz-1438 (Que-ID : 2944)
Which of the following statements is the most appropriate for sickle cell anaemia ?
- It cannot be treated with iron supplements.
- It is a molecular disease.
- It conferes resistance to acquiring malaria
- All of the above.
Q. 3 of Quiz-1438 (Que-ID : 2946)
The human chromosome with the highest and least number of genes in them are respectively
- chromosome 21 and Y
- chromosome 1 and X
- chromosome 1 and Y
- chromosome X and Y
Q. 4 of Quiz-1438 (Que-ID : 2947)
Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?
- Rosalind Franklin
- Maurice Wilkins
- Erwin Chargaff
- Meselson and Stahl
Q. 5 of Quiz-1438 (Que-ID : 2948)
Which of the following steps in transcription is catalysed by RNA polymerase ?
- Initiation
- Elongation
- Termination
- All of the above
Q. 6 of Quiz-1438 (Que-ID : 2949)
Control of gene expression takes place at the level of
- DNA-replication
- transcription
- translation
- none of the above
Q. 7 of Quiz-1438 (Que-ID : 2950)
Which was the last human chromosome to be completely sequenced ?
- Chromosome 1
- Chromosome 11
- Chromosome 21
- Chromosome X
Q. 8 of Quiz-1438 (Que-ID : 2951)
In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
- A – DNA
- B – DNA
- cDNA
- rDNA
Q. 9 of Quiz-1438 (Que-ID : 2952)
If the sequence of initrogen bases of the coding strand of DNA in a transcription unit is: 5’ – ATGAATG – 3’, the sequence of bases in its RNA transcript would be
- 5’ – AUG A AUG – 3’
- 5’ – UACUU AC – 3’
- 5’ – CAUUCAU – 3’
- 5’ – GUAAGUA – 3’.
Q. 10 of Quiz-1438 (Que-ID : 2953)
The RNA polymerase holocnzyme transcribes
- the promoter, structural gene and the terminator region
- the promoter and the terminator region
- the structural gene and the terminator region
- the structural gene only.
Q. 11 of Quiz-1438 (Que-ID : 2954)
If the base sequence of a codon in mRNA is 5’ – AUG – 3′ the sequence of tRNA pairing with it must be
- 5’ – UAC – 3’
- 5’ – CAU – 3’
- 5’-AUG – 3’
- 5’ – GUA – 3’
Q. 12 of Quiz-1438 (Que-ID : 2955)
The amino acid attaches to the tRNA at its
- 5’- end
- 3’ – end
- anticodon site
- DHUloop.
Q. 13 of Quiz-1438 (Que-ID : 2956)
To initiate translation, the wiRNA first bind to
- the smaller ribosomal sub-unit
- the larger ribosomal sub-unit
- the whole ribosome
- no such specificity exists
Q. 14 of Quiz-1438 (Que-ID : 2957)
In E. colt, the lac operon gets switched on when
- lactose is present and it binds to the repressor
- repressor binds to operator
- RNA polymerase binds to the operator
- lactose is present and it binds to RNA polymerase.
Q. 15 of Quiz-1438 (Que-ID : 2958)
In DNA strand, the nucleotides are linked together by
- glycosidic bonds
- phosphodiester bonds
- peptide bonds
- hydrogen bonds
Q. 16 of Quiz-1438 (Que-ID : 2959)
If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it ?
- 20%
- 40%
- 30%
- 60%
Q. 17 of Quiz-1438 (Que-ID : 2960)
If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?
- ATGCATGCA
- AUGCAUGCA
- TACTACGT
- UACGUACGU
Q. 18 of Quiz-1438 (Que-ID : 2961)
How far is each base pair from the next one in DNA double helix model ?
- 2 nm
- 3.4 nm
- 34 nm
- 0.34 nm
Q. 19 of Quiz-1438 (Que-ID : 2962)
Synthesis of DNA from RNA is explained by
- central dogma reverse
- reverse transcription
- feminism
- all of these
Q. 20 of Quiz-1438 (Que-ID : 2963)
Histone proteins are
- basic, negatively charged
- basic, positively charged
- acidic, positively charged
- acidic, negatively charged
Q. 21 of Quiz-1438 (Que-ID : 2964)
The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called
- nucleotides
- nucleosides
- histone octamer
- nucleosomes
Q. 22 of Quiz-1438 (Que-ID : 2965)
Find out the wrong statement about heterochromatin,
- It is densely packed
- It stains dark
- It is transcriptionally active.
- It is late replicating
Q. 23 of Quiz-1438 (Que-ID : 2966)
They year 2003 was celebrated as the 50th anniversary of discovery of
- transposons by Barbare Me Clintock
- structure of DNA by Watson and Crick
- Mendel’s laws of inheritance
- biotechnology by Kary Muliis.
Q. 24 of Quiz-1438 (Que-ID : 2967)
Amino acids which are specified by single codons are
- phenylalanine and arginine
- tryptophan and methionine
- valine and proline
- methionine and aroinine
Q. 25 of Quiz-1438 (Que-ID : 2968)
Which out of the following statements is incorrect ?
- Genetic code is ambiguous.
- Genetic code is deqenerate
- Genetic code is universal
- Genetic code is non-overlanning.
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Q. 18 of Quiz- (Que-ID : 2886)
The best way to decrease population of a country is
- to educate people
- to have better houses
- to kill people on a large scale
- to practice and implement familay planning
Q. 8 of Quiz- (Que-ID : 3351)
Continued inbreeding, especially close inbreeding generally results in
- inbreeding depression
- inbreeding stimulation
- inbreeding hybridisation
- inbreeding mutation
Q. 11 of Quiz- (Que-ID : 2754)
Endemic goitre is a state of
- Increased thyroid function
- Normal thyroid function
- Decreased thyroid function
- Moderate thyroid function
Q. 23 of Quiz- (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Q. 20 of Quiz- (Que-ID : 3438)
First biochemical to be produced commercially by microbial cloning and genetic engineering:
- Human insulin
- Penicillin
- Interferons
- Fertility factor
Q. 3 of Quiz- (Que-ID : 2616)
Where is paratoid salivary gland is situated
- Lower jaw
- Below tongue
- Upper jaw
- Cheek
Q. 8 of Quiz- (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 15 of Quiz- (Que-ID : 3458)
The shifting of an organism temporarily from the stressful habitat to a more hospitable area and return when stressful period is over is called
- Suspend
- Migrate
- Hibernation
- Aestivation
Q. 10 of Quiz- (Que-ID : 2978)
Each kidney has how many nephrons
- 1 million
- 2 million
- 2 thousand
- 2 hundred
Q. 8 of Quiz- (Que-ID : 3351)
Continued inbreeding, especially close inbreeding generally results in
- inbreeding depression
- inbreeding stimulation
- inbreeding hybridisation
- inbreeding mutation
Q. 1 of Quiz- (Que-ID : 3319)
A person with sickle cell anaemia is
- more prone to malaria
- more prone to typhoid
- less prone to malaria
- less prone to typhoid
Q. 4 of Quiz- (Que-ID : 3222)
The petiole is swollen and spongy in
- Nepenthes
- Trapa
- Clematis
- all of the above
Q. 9 of Quiz- (Que-ID : 3377)
The symbiotic association between fungi and roots of higher plants is referred to as
- lichen
- mycorrhiza
- biofertiliser
- biocontrol agent
Q. 5 of Quiz- (Que-ID : 2848)
Science of cultivation, breeding, marketing and arrangement of flowers is called
- arboriculture
- floriculture
- horticulture
- anthology
Q. 12 of Quiz- (Que-ID : 3080)
Translocation of sugar in flowering plants occurs in the form of
- glucose
- sucrose
- starch
- maltose
Q. 12 of Quiz- (Que-ID : 3430)
Which one of the following is a step of PCR?
- Denaturation
- Annealing
- Extension
- All of these
Q. 4 of Quiz- (Que-ID : 2947)
Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?
- Rosalind Franklin
- Maurice Wilkins
- Erwin Chargaff
- Meselson and Stahl
Q. 17 of Quiz- (Que-ID : 3035)
Typical plant growth shows _________ curve.
- J-shaped
- S-shaped
- I-shaped
- Parabolic
Q. 17 of Quiz- (Que-ID : 2835)
Which of the following is a post-fertilisation event in flowering plants?
- Transfer of pollen grains
- Embryo development
- Formation of flower
- Formation of pollen grains
Q. 7 of Quiz- (Que-ID : 3325)
Which one of the following sets includes bacterial diseases ?
- Tetanus, tuberculosis, measles
- Diptheria, leprosy, plague
- Cholera, typhoid, mumps
- Malaria, mumps, poliomyelits
Q. 21 of Quiz- (Que-ID : 3414)
DNA obtained for DNA finger printing:
- W.B.C
- Hair root cells
- Body fluids
- None of these
Q. 12 of Quiz- (Que-ID : 2955)
The amino acid attaches to the tRNA at its
- 5’- end
- 3’ – end
- anticodon site
- DHUloop.
Q. 2 of Quiz- (Que-ID : 3295)
The phenomenon ‘ontogeny repeats phylogeny’ is explained by
- recapitualtion theory
- Inheritcance theory
- mutation theory
- natural selection theory.
Q. 13 of Quiz- (Que-ID : 3331)
The most abundant class of immunoglobulins (Igs) in the body is
- IgA
- IgG
- IgE
- IgM
Q. 10 of Quiz- (Que-ID : 2903)
Besides activating the egg another role of a sperm is to carry to egg
- RNA
- mitochondria
- DNA
- ribosomes
Q. 1 of Quiz- (Que-ID : 2769)
Wheat belongs to division
- angiospermae
- gymnospermae
- Poach
- None of the above
Q. 5 of Quiz- (Que-ID : 3098)
The formation of first stable product of nitrogen fixation is catalysed by enzyme
- dehydrogenase
- nitrogenase
- isomerase
- none of these
Q. 6 of Quiz- (Que-ID : 3274)
Transgenic plants are the ones
- Grown in artificial medium after hybridization in the field
- Produced by a somatic embryo in artificial medium
- Generated by introducing foreign DNA in to a cell and regenerating a plant from that cell
- Produced after protoplast fusion in artificial medium
Q. 22 of Quiz- (Que-ID : 3190)
The most abundant type of animal tissue in the complex animals is
- Muscle tissue
- Nervous tissue
- Connective tissue
- Epithelial tissue
Q. 3 of Quiz- (Que-ID : 3321)
Which of the following pairs contains an infectious and a non-infectious disease respectively ?
- Typhoid and AIDS
- AIDS and cancer
- Pneumonia and malaria
- Cancer and malaria
Q. 8 of Quiz- (Que-ID : 3326)
The common cold is caused by
- Rhino viruses
- Streptococcus pnemoniae
- Salmonella typhimurium
- Plasmodium vivax.
Q. 4 of Quiz- (Que-ID : 3522)
Acid Rain comes under which type of pollution?
- Water pollution
- Air pollution
- Soil pollution
- Sound Pollution
Q. 10 of Quiz- (Que-ID : 3103)
Which one of the following mineral elements plays an in biological nitrogen fixation?
- Copper
- Manganese
- Zinc
- Molybdenum
Q. 22 of Quiz- (Que-ID : 3015)
Division of nucleus without being followed by cytokinesis results into
- Phargmoplast
- Polyploidy
- Uninucleate condition
- Multinucleate condition
Q. 20 of Quiz- (Que-ID : 2663)
RBC contains very high quantity of which enzyme
- Carbonic anhydrase
- Lysosome
- Ligase
- None of the above
Q. 2 of Quiz- (Que-ID : 1711)
The age of the tree can be calculated by-
- counting number of branches
- measuring its girth
- counting the number of annual rings
- measuring its height
Q. 15 of Quiz- (Que-ID : 2708)
Which joint is present between humerus and pectoral girdle
- Hinge
- Ball and socket
- Pivot joint
- Condyloid
Q. 3 of Quiz- (Que-ID : 3271)
In a monoecious plant
- Male and female sex organs are on the same individual
- male and female gametes are of two morphologically distinct types
- Male and female sex organs are on different individuals
- All the stamens are fused to form one unit
Q. 16 of Quiz- (Que-ID : 3184)
Tendons connect the following
- bone to bone
- muscle to muscle
- cartilage to muscle
- bone to muscle
Q. 21 of Quiz- (Que-ID : 3439)
A technology which has found immense use in solving cases of disputed percentage is:
- Polymerase chain reaction
- DNA finger printing
- None of these
- Both (a) and (b)
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