Tag: molecular biology

Questions Related to molecular biology

Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

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 $DNA$.

$600$ and $1020 A^o$
$700$ and $1190A^o$
$800$ and $ 1700 A^o$
$750$ and $680 A^o$

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

In which stage the DNA is doubled?

Metaphase
Anaphase
Interphase
Prophase

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

In double helix of DNA, the two DNA strands are?

Coiled around a common axis
Coiled around each other
Coiled differently
Coiled over protein sheath

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

The two strands of DNA are?

Similar in nature and complementary
Anti parallel and complementary
Parallel and complementary
Basically different in nature

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

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 ?

Species A and B share more recent common ancestor with each other than either shares with C.
Species C evolved more recently than species A and B.
Species C is more closely related to species B than to species A.
Species A and B have common ancestor but neither have common ancestor with species C.

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

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?

$130$
$120$
$220$
$300$

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

On which strand of DNA, m-RNA is constructed?

Trand oriented as $5' \rightarrow 3'$
Strand oriented as $3' \rightarrow 5'$
Both the strands
Any one strand

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

ADP ATP ADP system was found by Lipmann in

1940
1950
1960
1970

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

In polypeptide synthesis, amino acids are brought over ribosome-mRNA complex by

rRNA
tRNA
DNA
Nucleotides

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Multiple choice structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

Anticodon is made of

Three adjacent nitrogen bases
Unpaired triplet bases on mRNA
Paired triplet of nitrogen bases on tRNA
Unpaired triplet of nitrogen bases at one end of tRNA

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