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what is DNA fingerprinting?
If E.Coli was allowed to grow for 80 minutes then what would be the proportions of light and hybrid densities DNA molecules?
if the length of E.coli DNA is 1.36mm, calculate the no.of base pairs in E.coli
Difference between
Why do RNA viruses mutate faster than other viruses?
EXPLAIN the process of transcription in bacteria with diagram.
what is oblique binary fission .Explain the mechanism of this type of fission taking the example of Ceratium??????????
why is DNA a better genetic material than RNA?
what is difference between vntr and a probe?
tell me the concept of lac operon?
How many nucleosomes are there in a mammalian cell?
Why the distance b/w two polynucleotide chains in DNA remains constant?
i want three differance between DNAs and DNase? with proper explaination.
plz explain phosphoester and phosphodiester bond..? and whay do you mean that phosphate group attaches to 5'-OH of nucleoside to form nucleotide..???
explain the process of transcription in eukaryotes with diagram.
what is bulk DNA and satellite DNA?
why the distance between two polynucleotide chains in dnaemains almost constant?
What is the difference between polycistronic and monocistronic ?
write a note on human genome project? (5 MARKS QUESTION)
kindly answer as we have to write it in exams which could fetch us maximum marks. i.e. in points or paragraph?
what is chromatin
how to download educational videos from meritnation.com youtube
please explain the messelson and stahl's experiment
WHAT U MEAN BY DNA FINGERPRINTING?EXPLAIN
what does it mean that the phosphate moiety remains free at 5'
PLZ XPLAIN BARR BODY..?
why DNA is most abundant genetic material?
Why the distance between two polynucleotide chains remain constant...??
The two polynucleotide chains are coiled in a right handed fashion. What does this statement actually means ?
What is Euchromatin and Heterochromatin ?
what is the difference between cistron and operon.
Explain 'Transforming Principle' in Griffith experiment,'S strain and R strain' in griffith experiment?
briefly explain me the process of DNA replication, transcription and translation.
what is hRNA?
1)why does DNA replication occur in small replication forks not in its entire length? 2)why is DNA replication continuous and discontinuous in a replication fork? 3)explain the importance of "origin of replication" in a replication fork.
how is lac operon switches on and off .how does it sfunctions are activated and inhibited
3 codons on mRNA are not recognised by tRNA what are they? what is general term used for them?what is their role in protein synthesis?
what is meant by capping and tailing in transcription process in eukaryotes?
what is splicing?why is it necessary in eukaryotes cells?
what is satellite dna in a genome?explain their role in dna finger printing?
'A protein acquires charge depending upon the abundance of amino acid residues with charged side chain.' Explain.
In prokaryotes well defined nucleus is absent and DNA is scattered bt in our ncert text book it is given that DNA is not scattered throughout the cell,...its tooo confusing...what to refer plzz help me out..!!!
what is the difference between coding and non coding strands?
when and what end does the tailing of hnRNA take place?
if ecoli was allowed to grow for 80 minutes then what would be the propotion of light and hybrid density of Dna molecule?
what is meant by association with sigma or (p) factor 'alters the specificity of RNA polymerase"???
pls explain replication of dna and semiconservative nature of dna i detail?
what is the similarities between DNA polymerase and RNA polymerase
what you mean by saying haploid content of human dna is 3.3*109 base pairs?
DNA is unzipped twice ina cell.Name the 2 diifrent events which can occur and the enzyme s responisble for it?
A typical mammalian cell has 22 meters long DNA molecule whereas the nucleus in which
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Syllabus
what is DNA fingerprinting?
A) Replication
B) Termination
C) Elongation
D) Initiation
If E.Coli was allowed to grow for 80 minutes then what would be the proportions of light and hybrid densities DNA molecules?
Column-I Column-II
a. Ambiguous codon (i) UGG
b. Non-degenerate (ii) GUG
codon
c. Mis-sense mutation (iii) 3’ GAA 5’ 3’GAT 5’
d. Silent mutation (iv) 3’ CTC 5’ 3’CAC 5’
(1) a(ii), b(i), c(iv), d(iii) (2) a(ii), b(i), c(iii), d(iv)
(3) a(i), b(ii), c(iv), d(iii ) (4) a(i), b(ii), c(iii), d(iv)
if the length of E.coli DNA is 1.36mm, calculate the no.of base pairs in E.coli
Difference between
The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome . A typical nucleosome contains 200 bp of DNA helix. Nucleosome constitue the repeating unit of a structure in nucleus called chromatin, thread -like statined (coloured) bodies seen in nucleus. The nucleosomes in chromatin are seen as 'beads-on-string' structure when viewed under electron microscope (EM)
Theoretically, how many such beads, (nucleosomes) do you imagine are present in a mammalian cell?
Why do RNA viruses mutate faster than other viruses?
(1) 9200
(2) 4600
(3) 3600
(4) 1800
explain
EXPLAIN the process of transcription in bacteria with diagram.
what is oblique binary fission .Explain the mechanism of this type of fission taking the example of Ceratium??????????
Q.29. Macula of labyrinth is bathed in
(a) Aqueous humour
(b) Vitreous humour
(c) Perilymph
(d) Endolymph
why is DNA a better genetic material than RNA?
it is based on measles on stahl experiment of class 12 bio NCERT, same conditions as per that experiment.
what is difference between vntr and a probe?
tell me the concept of lac operon?
How many nucleosomes are there in a mammalian cell?
Why the distance b/w two polynucleotide chains in DNA remains constant?
(a) proteins are the only phage components that actually enter the infected cell.
(b) both proteins and nucleic acids enter the cell.
(c) only proteins from the infecting phage can also be detected in progeny phage.
(d) only nucleic acids enter the cell.
i want three differance between DNAs and DNase? with proper explaination.
plz explain phosphoester and phosphodiester bond..? and whay do you mean that phosphate group attaches to 5'-OH of nucleoside to form nucleotide..???
(a)Muton (b)Cistron (c)Operon (d)Recon
explain the process of transcription in eukaryotes with diagram.
46. How Many of the twenty two amino acids are essential amino acids for children?
(a) 6 (b) 8 (c) 10 (d) 11
what is bulk DNA and satellite DNA?
because of the requirement of the origin of replication that a piece of DNA if needed to be propagated during recombinant DNA procedures, requires a vector. The vectors provide the origin of replication.
why the distance between two polynucleotide chains in dnaemains almost constant?
What is the difference between polycistronic and monocistronic ?
a) 20
b) 150
c) Zero
d) 50
write a note on human genome project? (5 MARKS QUESTION)
kindly answer as we have to write it in exams which could fetch us maximum marks. i.e. in points or paragraph?
what is chromatin
how to download educational videos from meritnation.com youtube
Q. If a linear DNA molecule has 2000 bps then how many phosphodiester bonds and glycosidic bonds would be presents in it respectively ?
(1) 2000 and 2000
(2) 3998 and 4000
(3) 4000 and 4000
(4) 4000 and 8000
please explain the messelson and stahl's experiment
WHAT U MEAN BY DNA FINGERPRINTING?EXPLAIN
what does it mean that the phosphate moiety remains free at 5'
PLZ XPLAIN BARR BODY..?
why DNA is most abundant genetic material?
Q. Match the column I (various phase of an action potential ) with column II (ionic activity associated ) and choose the correct option.
Column I Column II
A. Resting stage of a neuron I. Opening and then
B. Depolarization phase in the II. All voltage gated sodium and potassium
generation of an action potential. channels are closed.
C. Repolarization phase III. The sodium channels remain opened.
D. Absolute refractory phase. IV. Opening of potassium gates and the rushing of potassium
(a) A -II, B –I, C – IV, D –III
(b) A – I, B – II, C– III, D– IV
(c) A – III, B – IV, C – I, D –II
(d) A– IV, B – II, C–III, D – I
Why the distance between two polynucleotide chains remain constant...??
The two polynucleotide chains are coiled in a right handed fashion. What does this statement actually means ?
(a) Electrical synapses are more common in out neural system than chemical synapses
(b) The new potential in post synaptic neuron may be either excitatory or inhibitory
(c) Hypothalamus is the major coordination centre for sensory and motor signaling
(d) The tracts of nerve fibres that connect two cerebral hemispheres are called corpora bigemina
What is Euchromatin and Heterochromatin ?
what is the difference between cistron and operon.
Explain 'Transforming Principle' in Griffith experiment,'S strain and R strain' in griffith experiment?
briefly explain me the process of DNA replication, transcription and translation.
what is hRNA?
a..no. of sugar and phosphate molecules.
b..no. of N-glycosidic linkage.
1)why does DNA replication occur in small replication forks not in its entire length? 2)why is DNA replication continuous and discontinuous in a replication fork? 3)explain the importance of "origin of replication" in a replication fork.
how is lac operon switches on and off .how does it sfunctions are activated and inhibited
3 codons on mRNA are not recognised by tRNA what are they? what is general term used for them?what is their role in protein synthesis?
what is meant by capping and tailing in transcription process in eukaryotes?
what is splicing?why is it necessary in eukaryotes cells?
Q.36. The diagram summarises the pathway of glucose breakdown.
Which two steps result in a net increase of ATP?
(a) A and C
(b) A and D
(c) B and D
(d) B and E
what is satellite dna in a genome?explain their role in dna finger printing?
'A protein acquires charge depending upon the abundance of amino acid residues with charged side chain.' Explain.
In prokaryotes well defined nucleus is absent and DNA is scattered bt in our ncert text book it is given that DNA is not scattered throughout the cell,...its tooo confusing...what to refer plzz help me out..!!!
what is the difference between coding and non coding strands?
I. Antibiotics
II. Fermented beverages
III. Enzymes and chemicals
IV. Bioactive molecules
(a) I, III, IV (b) I, II, III, IV (c) I, III (d) I, II, III
when and what end does the tailing of hnRNA take place?
if ecoli was allowed to grow for 80 minutes then what would be the propotion of light and hybrid density of Dna molecule?
what is meant by association with sigma or (p) factor 'alters the specificity of RNA polymerase"???
pls explain replication of dna and semiconservative nature of dna i detail?
1. Phi 174 phage
2. Lambda phage
3. E.coli
4. Human being
what is the similarities between DNA polymerase and RNA polymerase
(a) virulent form is smooth.
(b) virulent form is rough.
(c) nonvirulent form is capsulated.
(d) all forms are rough.
what you mean by saying haploid content of human dna is 3.3*109 base pairs?
DNA is unzipped twice ina cell.Name the 2 diifrent events which can occur and the enzyme s responisble for it?
A typical mammalian cell has 22 meters long DNA molecule whereas the nucleus in which
it is packed measure about 10-6 m. Explain in how such a long DNA molecule is packedwithin a tiny nucleus in the cell.board exam time table 2013