18 Questions
Why is DNA replication necessary?
To ensure both new cells will have the correct DNA
When does DNA replication occur?
During the S phase of interphase
What is the role of DNA in providing genetic diversity among living organisms?
Creating different arrangements of nucleotides
Which rule governs the base pairing in DNA replication?
Chargaff's rule: A=T, C=G
How does DNA replication work?
By unzipping DNA and joining complementary nucleotides to each original strand
Who proposed that DNA controlled cell function by serving as a template for protein structure?
Francis Crick
What are the monomers of DNA?
Nucleotides, comprising phosphate, sugar, and nitrogen base
In Chargaff's Rules, what is the percentage of Guanine (G) when Adenine (A) is 20%?
40%
Which nitrogen base always bonds with Thymine in DNA?
Adenine
What provides diversity among living organisms based on DNA?
Nucleotide arrangement in DNA
Who, along with Maurice Wilkins, produced X-ray diffraction images of DNA leading to the discovery of the Double Helix structure?
Rosalind Franklin
Which scientists used Rosalind Franklin's X-ray data to describe the DNA structure as a Double Helix?
Maurice Wilkins and Watson & Crick
Why is DNA transcription necessary?
To carry the code for proteins to ribosomes
What is the main function of a triplet or codon in genetics?
To encode a specific amino acid
In DNA translation, what is the role of messenger RNA (mRNA)?
To assemble amino acids into proteins
What is a key difference between DNA and RNA in terms of their sugar composition?
DNA has deoxyribose, while RNA has ribose
How does RNA polymerase contribute to the process of transcription?
It binds to DNA, separates the strands, and assembles mRNA
What is the primary role of transcription and translation in protein synthesis?
To ensure proper amino acid sequence in proteins
This quiz provides an overview of the structure and components of DNA, including nucleotides, double helix structure, nitrogen bases, and Chargaff's Rules. Test your understanding of DNA's composition and organization.
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