DNA REPLICATION AND GENETIC CODE
DNA Replication and Genetic Code Quiz
Test your knowledge on the fundamental processes of molecular biology with our DNA Replication and Genetic Code quiz! This quiz is designed for students, educators, and anyone interested in understanding the intricate mechanisms that drive genetic information.
Key Features:
- Multiple choice questions
- Diverse topics covering DNA structure, replication, and coding
- Instant scoring
1. Which monomers compose the strands of nucleic acids?
A) Amino acids
B) Ribose
C) Functional groups
D) Nucleotides
1. Which monomers compose the strands of nucleic acids?
A) Amino acids
B) Ribose
C) Functional groups
D) Nucleotides
2. What are the types of nucleic acids are found in living organisms?
A) deoxyribonucleic acid & nucleotide acid
B) deoxyribonucleic acid & ribonucleic acid
C) ribonucleic acid & nucleotide acid
D) ribonucleic acid & nucleoside acid
3. How many types of nucleotides are present?
A) 1
B) 2
C) 3
D) 4
4.Each codon within the genetic code encodes a different amino acid.
True
False
5. Replication fork is the junction between the two ___________
A) Unreplicated DNA
B) Newly synthesized DNA
C) Newly separated DNA strands and newly synthesized DNA strands
D) Newly separated DNA strands and the unreplicated DNA
6.A template strand of DNA is 3′ TAGGCATTGCA 5′3'\text{ TAGGCATTGCA } 5'3′ TAGGCATTGCA 5′3, prime, start text, space, T, A, G, G, C, A, T, T, G, C, A, space, end text, 5, prime. What is the complementary DNA strand that is created from this template during replication?
A) 5′ TGCAATGCCTA 3'
B) 5′ AUCCGUAACGU 3′
C) 5′ ATCCGTAACGT 3′
D)5′ TAGGCATTGCA 3′
7. In DNA replication, DNA "unwinds" to form two template strands: the leading strand and the lagging strand
A) Okazaki fragments are used to synthesize the leading strand of DNA.
B)B The leading strand of DNA is synthesized continuously.
C)DNA polymerase can only synthesize DNA on the leading strand.
D) The lagging strand can only be synthesized once the leading strand has been completed.
8. Which of the following protein is required for connecting Okazaki fragments?
A) Scaffold protein
B) Helicase
C) Primase
D) DNA gyrase
9. Name the protein, which is responsible for the formation of RNA primer?
A) Topoisomerase
B) Gyrase
C) Helicase
D) Primase
10. The enzyme that replaces the nucleotides of the RNA primer with the appropriate DNA nucleotides is -
A) DNA Polymerase II
B) RNA Polymerase
C) DNA Ligase
D) DNA Gyrase
11. An enzyme that recognizes and cuts DNA only at a particular sequence of nucleotides is often called
A) Restriction endonuclease
B) RNA polymerase
C) Photolyase
D) DNA glycosylase
12. Which of the following is not a feature of the genetic code?
A) Triplet
b) Degenerate
C) Non – overlapping
d) Ambiguous
13. There is one amino acid for one genetic code.
A) True
B) False
14. Which of the following is not a termination codon?
A) AUG
B) UAA
C) UAG
D) UGA
15. How many t-RNAs are required to translate all 61 codons?
A) 31
B) 32
C) 30
d) 29
16. Which position of a codon is said to wobble?
A) First
B) Second
C) Third
D) Fourth
17. In which of the following cases the first base of anticodon pairs with only one codon?
a) When the first base of anticodon is A or C
B) When the first base of anticodon is A or G
C) When the first base of anticodon is inosine
D) When the first base of anticodon is G or U
18.The genetic code translated the language of
A) Proteins into that of RNA
B) Amino acids into that of RNA
C) RNA into that of proteins
D) RNA into that of DNA
19.Wobble hypothesis was first proposed by
A) Nirenberg
B) Watson and Crick
C) Watson
d) Crick
20. The initiation codon is
A) AUG
B) UAA
C) UAG
D) UGA
21.Which of the following is known as opal
A)AUG
B)GUG
C) UAG
D) UGA
22. Which one of the following is not an m-RNA codon
A)UUG
B)UCU
C) TAG
D) UUU
23. AUG codes for
(1) valine
(2) histidine
(3) phenylalanine
(4) methionine
24.New strands of DNA are formed only in
(A)5’→3’ direction
(B)3’→5’ direction
(C)In both directions
(D)There is no specific polarity
25.Translocase is an enzyme required for
A) DNA replication
B) RNA synthesis
(3) initiation of protein synthesis
D) protein synthesis chain elongation
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