A novel species with double-stranded genetic material consists of 5 bases namely P , Q , R , S , T , with percentage given below. P Q R S T Percentage 22 28 22 12 16 Based on the above information, which one of the following inferences is not supported by the observations?

S base pairs with T and Q base pairs with R

S base pairs with Q and T base pairs with Q

P base pairs with R and S base pairs with Q

P base pairs with R and T base pairs with Q

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Relation between amino acid and protein is similar to the one found between nucleotides and nucleic acid.

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Important Questions on Biomolecules

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

DNA molecule which has the highest number of hydrogen bonds

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Which of the following statements is correct?

HARD

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

DNA molecule has length of $476 \overset{\circ}{A}$ with $20 %$ guanosine. Choose the correct features of $DNA$

$I)$ $56 CTP$
$II)$ $336$ Hydrogen bonds
$III)$ Total $150$ nucleotides
$IV)$ $84 TTP$

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Which of the following biomolecules does have a phosphodiester bond?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

If a dsDNA has 20% adenine, what would be its cytosine content?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Match the following lists:

	List $I$		List $II$
A)	X-ray diffraction data	$I)$	Chargaff
B)	DNA double stranded	$II)$	Meischer
C)	DNA double helix	$III)$	Wilkins
D)	DNA as an acidic substance	$IV)$	Watson $&$ Crick

The correct match is

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

In the polynucleotide chain of

DNA

, a nitrogenous base is linked to the

- OH

of:

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Choose the correct statements:
A) DNA directly codes for the synthesis of proteins
B) DNA and RNA both can function as genetic material
C) DNA is storage of genetic material and RNA transfers genetic information
D) RNA is indirectly codes for the synthesis of protein

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

If a double-stranded

DNA

has

15 %

cytosine, what is the

%

of adenine in the

DNA

?

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Watson and Crick model of DNA is

HARD

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

A bacteriophage

T 2

particle contains within its head a double-stranded

B

-from DNA of molecular weight

1.2 \times 10^{8} Da .

Assume that the head of a

T 2

Phage particle is of

210 nm

in length and the average molecular weight of a nucleotide is

330 Da .

The length of the

T 2

genome is in the range of

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Optical activity of DNA is due to its:

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

In a segment of DNA with

10

base pairs, the number of sugar molecules are __________.

HARD

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

A novel species with double-stranded genetic material consists of

5

bases namely

P, Q, R, S, T,

with percentage given below.

	$P$	$Q$	$R$	$S$	$T$
Percentage	$22$	$28$	$22$	$12$	$16$

Based on the above information, which one of the following inferences is not supported by the observations?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

If Adenine makes

30 %

of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Assertion (

A

): Purine always comes opposite to a pyrimidine.
Reason (R): Appropriate uniform distance is maintained between the two strands of the

DNA

helix.

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Identify the chemical components of nucleic acid

A) Cysteine
B) Heterocyclic compound
C) Tyrosine
D) Phosphoric acid
E) Ribulose
F) Monosaccharide

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

Which one of the following is the complementary sequence for the DNA with

5^{'} - C G T A C T A - 3^{'}

EASY

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

According to Watson-Crick model, hydrogen bonding in a double-stranded DNA occurs between

MEDIUM

Biology>Cell : Structure and Functions>Biomolecules>Nucleic Acids

In sea urchin DNA, which is double-stranded,

17 %

of the bases were shown to be cytosine. What are the percentages of other three bases expected to be present in this DNA?

Relation between amino acid and protein is similar to the one found between nucleotides and nucleic acid.

Important Questions on Biomolecules

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