Structure of dna and rna - class-XI
Description: structure of dna and rna | |
Number of Questions: 65 | |
Created by: Sara Dalvi | |
Tags: nucleic acids and protein synthesis biology molecular biology |
Genome is the complete complement of __________ including all ___________ and the inter genetic regions.
DNA is a polymer of a
The diameter of DNA molecule is
As the base sequence present on one strand of DNA decides the base sequence of other strand, this is considered as _____.
A single stranded DNA molecule is the genetic material of bacteriophage
The basis of life (secret of life) is
UAG is triplet nitrogen base on m RNA. What will be the corresponding triplet on the coding strand?
In eukaryotes basic structural unit made of histone and DNA
The transforming substance in Griffith's experiment is
If $H-bonds$ in double stronded $DNA$ is $350$. The ratio of $A$ and $G$ is $4:3$. The total no. of nucleotides and length of $DNA$.
In which stage the DNA is doubled?
In double helix of DNA, the two DNA strands are?
The two strands of DNA are?
Suppose two species A and B share 94% of their DNA with each other and species C shares 75% of DNA sequence with and B. What inference can be drawn from it ?
In a given $100$ bp DNA segment the number of nucleotide of guanine is $20$. The total number of hydrogen bonds stabilizing this double helix are?
On which strand of DNA, m-RNA is constructed?
In polypeptide synthesis, amino acids are brought over ribosome-mRNA complex by
Anticodon is made of
Enzyme required during DNA replication is
Length of one coil of B-DNA helix is
Double stranded DNA virus with 20,000 base pairs has nucleotides
Hargobind Khorana is known for
Coded information in nucleic acid depends upon
Special unwinding enzyme that breaks hydrogen bonds between the two strands of DNA is
Nucleotide pairs present in one turn of DNA helix
Select correct/incorrect functions
1.Ligase - joins short DNA segments
2.DNA Polymerase - Cuts DNA at specific sites
3.Helicase-Breaks H-bonds between complementary DNA strands
The codon for anticodon 3' UUUA-5' is
DNA duplex shows
DNA strands have
Chargaffs rules are applicable to
DNA contains nucleobases, sugar and phosphate. Removal of which among these will not affect length of DNA
DNA double helix is
Which is an example of highly repetitive DNA?
What is not relevant to DNA double helix ?
Diameter of DNA double helix is
Single base DNA differences are called
1.7 m double helical DNA will have base pairs
Crick, one of the discoverer of DNA double helix was man of
In double helix model of DNA, how far is each base pair from the next base pair
The pitch angle of deflection between two successive base pairs in DNA double helix is
Which of the following is correctly matched
Initiation of DNA strand synthesis is performed by
Which of the following pairs are correctly matched
A DNA double helix is 340 nm long. Number of nucleotides found in it is
In double helix of DNA, there are sugar phosphate backbones with bases projected
The enzyme which helps to cut one strand of DNA duplex to release tension of coiling of two strands is
TACAAAGGGTTTCAACCC is the sequence of nucleotides in a DNA strand. Predict the sequence of amino acids found in a protein formed from it
Select the correct option
Identify the DNA segment which is not pallindromic
The terminator/stop codons UGA, UAG and UAA
Which one of the following alternations in DNA is likely to be lethal?
An increased melting temperature for duplex DNA results from a high content of _________________.
The successive nucleotides of RNA are covalently linked through ______________.
In nematode resistance by RNA interference , some specific genes were introduced which form ds RNA these were introduced in ?
The discovery of DNA helix was made by
Okazaki segments develop in
The double helix of DNA consists of
In the case of double-stranded DNA, which of the following base ratios are always equal to one?
a. $(A+T)/(G+C)$
b. $(A+G)/(C+T)$
c. $C/G$
d. $(G+T)/(A+C)$.
Select the correct answer.
In relation to double helical bacterial DNA, match list-I(Parameter) with List-II(Value) and select the correct answer using the codes given the lists.
List-I | List-II |
---|---|
a. Diameter of the helix | $1$. $34A'$ |
b. Distance between two adjacent bases | $2$. $20A'$ |
c. Distance between two complete turns | $3$. $3A'$ |
d. Length of the hydrogen bond | $4$. $3.4A'$ |
The number of hydrogen bonds needed to bind cytosine with guanine in a DNA stand is?
In aqueous solution, the alcidine molecules bind to DNA by inserting themselves between adjacent base pairs. The process is called ______________.
Which of the following pairs is/are correctly matched?
a. E.coli - Circular DNA
b. Tobacco Single - Stranded RNA mosaic virus
c. Reo virus - Double-stranded RNA
Select the correct answer using the codes given.
The genetic material in the virus $fX _{174}$ is?
If the sequence of bases in coding strand of DNA is ATTCGATG, then the sequence of bases in mRNA will be
If one strand of DNA has the base sequence AAGCAA, the complementary strand has which of the following sequences?