Molecular Basis of Inheritance Test

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Molecular Basis of Inheritance Test - 72

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following option shows a correctly labeled region in the given diagram of DNA replication?

A
A and C

B
Only C

C
Only B

D
None of the above
Question 2
1 / -0

A bacterium with completely non-radioactive DNA was allowed to replicate in radioactive medium for three generation what $$ \%$$ of the bacteria should contain radioactive DNA:

A
$$ 25\%$$

B
$$ 75\%$$

C
$$ 0\%$$

D
$$ 100\%$$
Question 3
1 / -0

Consider the following codons:
1. UAA
2. UAC
3. UAG
Which of these are considered to be the termination codons codons in protein synthesis?

A
1, 2 and 3

B
1 and 2

C
2 and 3

D
1 and 3

Question 4

1 / -0

Match List I(Enzyme) with List II(Function) and select the correct answer using the codes given the lists.

List-I	List-II
a. DNA Ligase	$$1$$. Catalyses the covalent union of segments of an interrupted sugarphosphate strand in double-stranded DNA
b. DNA polymerase	$$2$$. End nuclease that digests either single stranded or double stranded DNA
c. DNase I	$$3$$. Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands
d. DNA topoisomerase	$$4$$. Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template

A-$$1$$, B-$$4$$, C-$$3$$, D-$$2$$

A-$$4$$, B-$$1$$, C-$$2$$, D-$$3$$

A-$$1$$, B-$$4$$, C-$$2$$, D-$$3$$

A-$$4$$, B-$$1$$, C-$$3$$, D-$$2$$

Solution

DNA replication is the process by which DNA makes a copy of itself during cell division. These are the enzymes that play an important role in DNA replication. their roles are:-

DNA Ligase- Catalyses the covalent union of segments of an interrupted sugar phosphate strand in double-stranded DNA.

DNA topoisomerase- Produces single or double stranded breaks in DNA during replication to release tension brought about by the separation of double strands.

DNA polymerase- Catalyses the formation of DNA worn deoxyribonucleotides using one strand of DNA as template.

DNase I-End nuclease that digests either single stranded or double stranded DNA.

So, the correct option is 'C'.

Question 5
1 / -0

Replication of DNA on its lagging strand is initiated by.

A
DNA polymerase III

B
RNA primer

C
DNA polymerase I

D
DNA ligase
Question 6
1 / -0

The number of ribosomal binding sites used by tRNAs during protein elongation are ______________.

A
$$2$$

B
$$4$$

C
$$6$$

D
$$8$$
Question 7
1 / -0

The distance between two nitrogen bases in a polynucleotide of DNA is?

A
$$34.00$$A'

B
$$10.4$$A'

C
$$6.4$$A'

D
$$3.4$$A'
Question 8
1 / -0

A genetic engineer wishes to construct a shuffle vector for his experiments. What essential requirements should it possess to integrate with the host systems?

A
Different origins of replication of DNA

B
Cos sites for incorporation of DNA

C
Polylinker sites for insertion of foreign DNA

D
Restriction enzyme sites to generate cohesive ends of DNA
Question 9
1 / -0

Which one of the following is a terminator codon?

A
AUG

B
UGA

C
UUU

D
UGG
Question 10
1 / -0

Consider the following statements.
The genetic code is said to be degenerate and universal which means that.
a. Amino acids may have more than one codon.
b. All Amino acids have the one codon.
c. Codons are common for higher and lower organisms.
Of these statements.

A
$$2$$ and $$3$$ are correct

B
$$1$$ and $$3$$ are correct

C
$$3$$ alone is correct

D
$$1$$ alone is correct

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Re-Attempt Weekly Quiz Competition

Molecular Basis of Inheritance Test - 72

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Molecular Basis of Inheritance Test - 72

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Question 1

A and C

Only C

Only B

None of the above

Question 2

$$ 25\%$$

$$ 75\%$$

$$ 0\%$$

$$ 100\%$$

Question 3

1, 2 and 3

1 and 2

2 and 3

1 and 3

Question 4

A-$$1$$, B-$$4$$, C-$$3$$, D-$$2$$

A-$$4$$, B-$$1$$, C-$$2$$, D-$$3$$

A-$$1$$, B-$$4$$, C-$$2$$, D-$$3$$

A-$$4$$, B-$$1$$, C-$$3$$, D-$$2$$

Solution

Question 5

DNA polymerase III

RNA primer

DNA polymerase I

DNA ligase

Question 6

$$2$$

$$4$$

$$6$$

$$8$$

Question 7

$$34.00$$A'

$$10.4$$A'

$$6.4$$A'

$$3.4$$A'

Question 8

Different origins of replication of DNA

Cos sites for incorporation of DNA

Polylinker sites for insertion of foreign DNA

Restriction enzyme sites to generate cohesive ends of DNA

Question 9

AUG

UGA

UUU

UGG

Question 10

$$2$$ and $$3$$ are correct

$$1$$ and $$3$$ are correct

$$3$$ alone is correct

$$1$$ alone is correct

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