Molecular Basis of Inheritance Test

Result

Molecular Basis of Inheritance Test - 31

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

An amino acid is coded by .............. nucleotides.

A
1

B
3

C
6

D
9

E
12

Solution

The nucleotide sequence of DNA serves as the template for RNA synthesis during transcription. The triplet sequence on the mRNA serves as the template for amino acid sequence in proteins. The set of the three nucleotides is termed as a codon which codes for an amino acid. There are 64 codons to code for the 20 amino acids.
Thus, the correct answer is option '3'.
Question 2
1 / -0

Okazaki fragments form

A
Leading strand

B
Lagging strand

C
Sense strand

D
None of the above

Solution

Okazaki fragments are short, newly synthesized DNA fragments that are formed on the lagging template strand during DNA replication. They are complementary to the lagging template strand, together forming short double-stranded DNA sections.
Thus, the correct answer is option B.
Question 3
1 / -0

The structure of DNA is

A
Linear

B
Double helix

C
Single helix

D
Triple helix

Solution

DNA is double-helical in structure. It's both strands are complementary to each other. Both the strands of DNA is antiparallel.
Thus, the correct answer is option B.
Question 4
1 / -0

What is the error in above diagram?

A
Arrows are wrongly depicted.

B
Polarity is incorrect.

C
Both arrows and polarity are incorrect.

D
None of the above.

Solution

The DNA replication takes place in 5' to 3' direction always. On leading strand, DNA replication is continuous while on lagging strand DNA replication is discontinuous. The polarity of lagging strand is incorrect in the given figure.
Both the strands should be anti-parallel. In one strand, carbon of sugar are in 3' -5' direction and in other the carbon of sugar are in 5' -3' direction.
Question 5
1 / -0

Double helical model of DNA was proposed by

A
Watson and Crick

B
Kornberg and Ochoa

C
Jacob and Monod

D
Beadle and Tatum

Solution

Watson and Crick model of DNA was proposed on hybridization model of DNA, which was proposed by Wilkins and Franklin by the help of X-ray diffraction methods.
Question 6
1 / -0

The above-given model of t-RNA was explained by

A
Watson and crick

B
Friedrick meischer

C
Clover leaf

D
None of the above

Solution

The tRNA forms a secondary structure in the form of a cloverleaf. It is made up of :
a) Amino acid arm- It has seven base pairs stem formed by base pairing between 5′ and 3′ ends of tRNA. It binds to amino acid arm during protein synthesis.
b) D-arm- It contains a modified base dihydrouracil.
c) Anticodon arm- It has anticodon that are complementary to the codon of mRNA.
d) T-arm or TψC arm- It has a modified base pseudouridine.
Thus the correct answer is option C.
Question 7
1 / -0

The amino acid attaches to the .......... end of the amino acid acceptor arm.

A
5'

B
3'

C
Bidirectional

D
None of the above

Solution

In the cloverleaf model of tRNA, the amino acid arm has seven base pairs stem formed due to base pairing between 5′ and 3′ ends of tRNA. At its 3′ end, a sequence 5′-CCA-3′ is added. This is known as amino acid acceptor arm or CCA arm. During protein synthesis, amino acid binds to this arm. Thus the correct answer is option B.
Question 8
1 / -0

With four bases the number of possible triplet codons is

A
24

B
32

C
48

D
64

Solution

The four bases are U, C, A, and G.Any single set of three nucleotides which codes an amino acid is called a codon, and the set of all possible three-nucleotide combinations is called "the genetic code" or "triplet code." There are sixty-four different combinations or codons (4 × 4 × 4 = 64). These 64 codons code for 21 amino acids.
So, the correct answer is '64'.
Question 9
1 / -0

Which one of the following is a stop codon ?

A
UAG

B
UAC

C
AUG

D
UCA

Solution

The nucleotide found in the triplet form in the genetic code within a messenger RNA that signals the termination of translation into proteins is called a stop codon. There are three stop codons found in the genetic code. These are UAG (amber), UAA (ochre) and UGA (opal).
So, the correct option is A.
Question 10
1 / -0

Which of the following is an application of human genome project?

A
Understanding of phylogenetic disorder

B
Improvement in gene therapy

C
Understanding of mutation concept

D
All of the above

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Molecular Basis of Inheritance Test - 31

Result

Molecular Basis of Inheritance Test - 31

Score

-

Rank

-

SHARING IS CARING

Question 1

1

3

6

9

12

Solution

Question 2

Leading strand

Lagging strand

Sense strand

None of the above

Solution

Question 3

Linear

Double helix

Single helix

Triple helix

Solution

Question 4

Arrows are wrongly depicted.

Polarity is incorrect.

Both arrows and polarity are incorrect.

None of the above.

Solution

Question 5

Watson and Crick

Kornberg and Ochoa

Jacob and Monod

Beadle and Tatum

Solution

Question 6

Watson and crick

Friedrick meischer

Clover leaf

None of the above

Solution

Question 7

5'

3'

Bidirectional

None of the above

Solution

Question 8

24

32

48

64

Solution

Question 9

UAG

UAC

AUG

UCA

Solution

Question 10

Understanding of phylogenetic disorder

Improvement in gene therapy

Understanding of mutation concept

All of the above

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.