.png){kind=logo}
Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
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
Ans → (b)Maurice Wilkins
Explanation → Maurice Wilkins contributed in development of double helix model
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.
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 14 of Quiz- (Que-ID : 3282)
In gymnosperms, the development of pollen grains occurs in
- Strobili
- Microsporangia
- Megasporangia
- Macrosporangia
Q. 3 of Quiz- (Que-ID : 2921)
What will be the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus ?
- 3:01
- 1:02:01
- 1:01
- None of the above
Q. 17 of Quiz- (Que-ID : 3210)
The innermost layer of cortex which shows casparian thickenings in its cells is called as
- epidermis
- endodermis
- pericycle
- exodermis
Q. 36 of Quiz- (Que-ID : 607)
Which acid is produced in human stomach for digestion purpose ?
- Sulphuric Acid
- Hydrochloric Acid
- Acetic Acid
- Nitric Acid
Q. 20 of Quiz- (Que-ID : 3263)
Order Rhynchocephalia consists of
- Tuataras
- Lizards and snakes
- Turtles and tortoises
- Crocodiles, alligators, caimans
Q. 12 of Quiz- (Que-ID : 3480)
That animal who can bear one third loss of water of one third body weight is
- Necturus
- Camel
- Wall Lizzard
- Kyton
Q. 7 of Quiz- (Que-ID : 3125)
Two types of molecules cross the membrane in the same direction, it is called as
- Uniport
- Symport
- Antiport
- Multiport
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. 6 of Quiz- (Que-ID : 3424)
Transgenic Golden Rice has Highly Nutrient value for:
- Lysine
- Methionine
- Glutanin
- Vitamin-A
Q. 3 of Quiz- (Que-ID : 3221)
Exceptional roots of Cuscuta are
- haustorial
- coralloid
- mucorhizal
- all of the above
Q. 4 of Quiz- (Que-ID : 3222)
The petiole is swollen and spongy in
- Nepenthes
- Trapa
- Clematis
- all of the above
Q. 11 of Quiz- (Que-ID : 2779)
In angiosperm, characters of flowers are used in classification because
- Flowers are attractive
- Flowers are large
- Characters of flowers are conservative
- None of the above
Q. 10 of Quiz- (Que-ID : 2878)
The correct surgical procedure as a contraceptive method is
- ovariectomy
- hysterectomy
- vasectomy
- castration
Q. 12 of Quiz- (Que-ID : 3005)
Choose the correct sequence. A. Pachytene B. Zygotene C. Leptotene D. Diakinesis E. Diplotene
- C, B, A, D, E
- C, A, B, E, D
- C, B, A, E, D
- D, B, C, E, A
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 : 2614)
Each tooth is embedded in a socket of jaw bone known as
- Thecodont
- Diphyodont
- Heterodont
- None of the above
Q. 8 of Quiz- (Que-ID : 2726)
Common feature of archaebacteria
- Structure of cell membrane
- Structure of cell wall
- Has fatty acid synthetase
- Structure of flagellin protein
Q. 15 of Quiz- (Que-ID : 2733)
Whittakers definition of classification does not include
- Algae
- Protista
- Plantae
- mychota
Q. 10 of Quiz- (Que-ID : 3328)
A toxic substance, responsible for the chills and high fever recurring every three to four days in malarial fever, is
- interferon
- haemozoin
- hirudin
- colostrum
Q. 10 of Quiz- (Que-ID : 3478)
Physical and chemical properties of soil studied by
- Climatic factor
- Biotic factor
- Soil factor
- Topographic factor
Q. 5 of Quiz- (Que-ID : 3173)
Which one of the four parts mentioned below is not part of a single uriniferous tubule ?
- Bowman scapsule
- Loop of Henle
- Distal convoluted tubule
- Collecting ducts
Q. 7 of Quiz- (Que-ID : 3550)
Which among the following chemicals is used in Photography?
- Pottasium chloride
- Silver bromide
- Sodium bromide
- Magnesium chloride
Q. 18 of Quiz- (Que-ID : 2836)
The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be
- 20
- 10
- 40
- 15
Q. 15 of Quiz- (Que-ID : 2984)
Which loop of hence is permeable to water
- Descending loop
- Ascending loop
- Both the loops
- None of the above
Q. 11 of Quiz- (Que-ID : 3529)
Natural air pollutant are
- Pollen Grains
- Gases of Volcanic Eruption
- Aerosol
- Fluorides
Q. 10 of Quiz- (Que-ID : 2828)
In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit?
- brinjal
- cucumber
- papaya
- Bitter gourd
Q. 22 of Quiz- (Que-ID : 3015)
Division of nucleus without being followed by cytokinesis results into
- Phargmoplast
- Polyploidy
- Uninucleate condition
- Multinucleate condition
Q. 23 of Quiz- (Que-ID : 3041)
Formation of seedless fruit without act of fertilisation
- Parthenocarpy
- pseudocarpy
- Apomixis
- Parthenogenesis
Q. 11 of Quiz- (Que-ID : 3429)
Which Vitamin has been transferred to golden rice?
- Vit-B12
- Vit-A
- Vit-D
- Vit-C
Q. 9 of Quiz- (Que-ID : 3402)
Which of the given statement is correct in the context of observing DNA separated by agarose gel electrophoresis?
- DNA can be seen in visible light
- DNA can be seen without staining in visible light
- Ethidium bromide stained DNA can be seen in visible light
- Ethidium bromide stained DNA can be seen under exposure to UV light
Q. 19 of Quiz- (Que-ID : 3562)
Which of these non-metals is commonly used as a general anesthetic?
- Helium
- Fluorine
- Xenon
- Tellurium
Q. 8 of Quiz- (Que-ID : 3326)
The common cold is caused by
- Rhino viruses
- Streptococcus pnemoniae
- Salmonella typhimurium
- Plasmodium vivax.
Q. 23 of Quiz- (Que-ID : 2916)
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called
- spermiogenesis
- spermatogenesis
- spermatocytogenesis
- spermiation
Q. 18 of Quiz- (Que-ID : 2631)
Crypts in between bases of villi in intestine are known as
- Crypts of lieberkuhn
- Crypts of intestine
- Crypts of stomach
- None of the above
Q. 3 of Quiz- (Que-ID : 2871)
Confirmatory test for STDs is
- ELISA
- PCR
- DNA hybridisation
- all of these
Q. 25 of Quiz- (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.
Q. 11 of Quiz- (Que-ID : 3379)
Enzyme which has the fibrinolytic effect is
- protease
- amylase
- lipase
- streptokinase
Q. 20 of Quiz- (Que-ID : 3388)
Methanogens, growing anaerobically on cellulosic material produce
- methane
- methane and carbon dioxide
- methane and hydrogen
- methane, carbon dioxide and hydrogen
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. 3 of Quiz- (Que-ID : 2746)
In adults insufficient thyroxine lead to
- Myxoedema
- Goitre
- Tetany
- Cretinism
General Awareness (GA) MCQs
Miscellaneous MCQs
General Science MCQs
Mathematics MCQs
Pharmacy MCQs
General Intelligence MCQs
English Language MCQs
Pharmacognosy MCQs
Current Affairs MCQs
Pharmacology MCQs
सामान्य हिन्दी MCQs
Books and Authors MCQs
Indian history MCQs
General Science (GS) MCQs
Chemistry MCQs
Biology MCQs
Physics MCQs
Parts of Speech MCQs
One Word Substitutions MCQs
Health Education MCQs
Web Development MCQs
Human Anatomy and Physiology MCQs
Microbiology MCQs
Zoology MCQs
Botany MCQs
Bio Organic Chemistry MCQs
Biochemistry MCQs
Reasoning MCQs
Pharmaceutical Jurisprudence MCQs
General Pharmacology MCQs
Pharmaceutics MCQs
World Geography MCQs
Geography of India MCQs
Pharmaceutical Chemistry (Inorganic) MCQs
Pharmaceutical Organic Chemistry MCQs
Drug Store and Business Management MCQs
Hospital and Clinical Pharmacy MCQs
Indian Art, Culture and Heritage MCQs
World History MCQs
Computer MCQs
Pathophysiology MCQs
Community Health Nursing MCQs