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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
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
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’.
Ans → (d)5’ – GUAAGUA – 3’.
Explanation → Sequence will be 5’ – GUAAGUA – 3’.
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. 24 of Quiz- (Que-ID : 2842)
Oestrous cycle is reported in
- cows and sheep
- humans and monkeys
- chimpanzees and gorillas
- none of these.
Q. 9 of Quiz- (Que-ID : 3052)
Out of 36 ATP molecules produced per glucose molecule during respiration
- 2 are produced outside glycolysis and 34 during repiratory chain
- 2 are produced outside mitochondria and 34 inside the mitochondria
- all the formed inside mitochondria
- 2 during glycolysis and 34 during kreds cycle
Q. 6 of Quiz- (Que-ID : 3324)
Which of the following pathogens causes whooping coough ?
- Legionella spp.
- Burcella melitensis
- Vibrio cholerae
- Burcella melitensis
Q. 13 of Quiz- (Que-ID : 3381)
Monascus purpureus is a yeast commercially used in the production of
- citric acid
- ethanol
- blood cholesterol lowering statins
- streptokinase for removing clots from blood vessels
Q. 7 of Quiz- (Que-ID : 3525)
Chlorofluoro carbon are responsible for
- Acid rain
- Ozone layer depletion
- Global warming
- Thermal inversion
Q. 21 of Quiz- (Que-ID : 3014)
Synapsis occurs between
- A male and female gametes
- Ribosome and m-RNA
- Spindle fibres and centromeres
- Two homologous chromosomes
Q. 9 of Quiz- (Que-ID : 1971)
Circulation of blood was discovered by-
- Darwin
- Harvey
- Aristotle
- Pasteur
Q. 16 of Quiz- (Que-ID : 3034)
Which plant growth regulator is the derivative of carotenoids?
- Auxin
- Gibberelic acid
- Cytokinin
- Abscisic acid
Q. 24 of Quiz- (Que-ID : 3117)
The requirement of micro nutrient are always low if the concentration increases it leads to
- deficiency symptoms
- Cell differentiation
- toxicity
- Cell elongation
Q. 11 of Quiz- (Que-ID : 582)
The capacity of communication channel is measured in
- Band rate
- Band width
- Data flow
- Bit capacity
Q. 1 of Quiz- (Que-ID : 3144)
Feedback inhibition of enzymes is affected by which of the following
- enzyme
- substrate
- end products
- intermediate end products
Q. 1 of Quiz- (Que-ID : 2969)
Which among the following is not ammonotelic
- Aquatic amphibian
- Aquatic insect
- Bony fishes
- Mammal
Q. 22 of Quiz- (Que-ID : 3440)
Anticoagulant hirudin is found in:
- In Snake
- In Lizard
- In Leech
- In Scorpion
Q. 4 of Quiz- (Que-ID : 2847)
Nonessential floral organs in a flower are
- sepals and petals
- anther and ovary
- stigma and filament
- petals only.
Q. 25 of Quiz- (Que-ID : 2768)
Hormones are
- Excretory pdt
- Enzymatory pdt
- Chemical messenger
- Nerve impulse
Q. 24 of Quiz- (Que-ID : 2817)
Which among is faster impulse transmission
- Chemical
- Both
- Electrical
- None of these
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. 22 of Quiz- (Que-ID : 2940)
Which three scientists independently rediscovered Mendel’s work ?
- Avery, McLeod, McCarty
- Sutton, Morgan and Bridges
- Bateson, Punnet and Bridges
- de Vries, Correns and Tschemark
Q. 6 of Quiz- (Que-ID : 2824)
Which of the following organisms has the highest number of chromosomes?
- Housefly
- Butterfly
- Ophioglossum
- Onion
Q. 14 of Quiz- (Que-ID : 2932)
To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
- test cross
- back cross
- reciprocal cross
- dihybrid cross
Q. 11 of Quiz- (Que-ID : 2624)
Absorption of water in large intestine is done by
- Chief cells
- Haustra cells
- Parietal cell
- Peptic cell
Q. 2 of Quiz- (Que-ID : 3120)
Choose the correct statement/statements. Pumps in active transport are A. Lipids that bind molecules to pass them through the membrane. B. Transport molecules uphill. C. These are specific transporters. D. These are sensitive to inhibitors
- A and C
- A, B and D
- B, C and D
- C and D
Q. 14 of Quiz- (Que-ID : 3207)
Fusifrom initial cells of cambium from
- vascular rays
- tracheary elements
- ray parenchyma
- phloem parenchyma
Q. 20 of Quiz- (Que-ID : 2963)
Histone proteins are
- basic, negatively charged
- basic, positively charged
- acidic, positively charged
- acidic, negatively charged
Q. 3 of Quiz- (Que-ID : 3146)
Insulin is made up of _______ and _______.
- glucose and fructose
- glucose and fructose
- fructose and mannose
- mannose and glucose
Q. 23 of Quiz- (Que-ID : 2691)
What is normal blood pressure
- 120 over 80
- 190 over 120
- 70 over 70
- None of the above
Q. 3 of Quiz- (Que-ID : 2896)
Immediately after ovulation, the mammalian egg is covered by a membrane known as
- chorion
- zona pellucida
- corona radiata
- vitelline membrane.
Q. 9 of Quiz- (Que-ID : 3177)
Fats are richly found in
- alveolar tissue
- lymph glands
- adipose tissue
- liver cells
Q. 1 of Quiz- (Que-ID : 2744)
Which hormones is a stress hormone
- Norepinephrine
- Androgen
- Cortisol
- FSH
Q. 4 of Quiz- (Que-ID : 3472)
Exchange of water in submerged plant
- Stomata
- Normal surface
- Hydathode
- Lenticel
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. 19 of Quiz- (Que-ID : 3437)
Golden rice is a transgenic crop of the future with the following improved trail:
- Insect resistance
- Hight lysine (essential amino acid) content
- High protein content
- High vitamin A content
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. 5 of Quiz- (Que-ID : 2998)
Karyokinesis is the term used for
- division of cytoplasm
- division of nucleoplasm
- division of nucleus
- separation of daughter chromosomes
Q. 20 of Quiz- (Que-ID : 2888)
Which of the following is not a characteristic of an ideal contraceptive ?
- User-friendly
- Irreversible
- Easily available
- Least side-effects
Q. 17 of Quiz- (Que-ID : 3435)
Natural genetic engineer is :
- Bacillus subtilis
- Pseudomonas sp
- Escherichia coli
- Agrobacterium tumefaciens
Q. 20 of Quiz- (Que-ID : 3063)
One molecule of glucose yields ___ ATP molecules in aerobic respiration.
- 2
- 16
- 38
- 42
Q. 16 of Quiz- (Que-ID : 2734)
Classification is not based on
- Thallus organisation
- Cell structure
- Gross morphology
- Phylogenetic relationship
Q. 17 of Quiz- (Que-ID : 3410)
Restrictipn endonucleases are most widely used in recombinant DNA technology. They are obtained from
- Plasmids
- AH prokaryotic cells
- Bacteriophages
- Bacterial cells
Q. 15 of Quiz- (Que-ID : 3408)
Triticale, first man made cereal crop, has been obtained by crossing wheat with:
- Rye
- Pearl millet
- Sugarcane
- Barley
Q. 7 of Quiz- (Que-ID : 2800)
Vestibular apparatus is made up of three semi circular canals. These canals lies at ____ degree angle to each other.
- 30
- 45
- 60
- 90
Q. 4 of Quiz- (Que-ID : 3122)
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
- No movement of water
- Movement of water from cell B to A
- Movement of water from cell A to B
- Equilibrium between the two
Q. 25 of Quiz- (Que-ID : 2868)
What is the function of filiform apparatus in an angiospermic embryo sac?
- Brings about opening of the pollen tube
- Guides the pollen tube into a synergid
- Prevents entry of more than one pollen tube into a synergid
- None of these
Q. 13 of Quiz- (Que-ID : 3456)
To avoid summer-related problems – heat and desiccation by organism is called
- Hibernation
- Suspend
- Migrate
- Aestivation
Q. 3 of Quiz- (Que-ID : 2796)
The basic cyclic pattern of inspiration and expiration are established by a respiratory center within the ______.
- Cerebellum
- Medulla oblongata
- Cerebral cortex
- Thalamus
Q. 20 of Quiz- (Que-ID : 3313)
The character that proves that frogs have evolved from fishes is
- their ability to swim in water
- tadpole larva in frogs
- similarity in the shape of the head
- their feeding on aquatic plants
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