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Purines vs Pyrimidines in DNA Structure

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Questions and Answers

What is the process by which the DNA code is transcribed into mRNA code?

Transformation

Translation

Transcription (correct)

Replication

Which nitrogen base is unique to RNA and not found in DNA?

Uracil (correct)

Guanine

Thymine

Adenine

What type of bond forms between the ribose sugar of one nucleotide and the phosphate of the nucleotide below it in RNA?

Hydrogen bond

Covalent bond (correct)

Ionic bond

Peptide bond

Which process involves the translation of mRNA code into an amino acid sequence?

Translation Signup and view all the answers

What type of bond is formed between purines and pyrimidines during DNA replication and transcription?

Hydrogen bond Signup and view all the answers

Who discovered the structure of DNA?

James Watson and Francis Crick Signup and view all the answers

In a nucleosome, how many histone proteins form the core around which DNA is wrapped?

8 Signup and view all the answers

Which of the following describes the structure of purines and pyrimidines?

Purines are double-ringed structures, while pyrimidines are single-ringed structures. Signup and view all the answers

What is the significance of the 5' to 3' directionality in DNA replication and transcription?

It enables the enzymes involved to add nucleotides in the correct order. Signup and view all the answers

How did the Hershey-Chase experiment provide evidence for DNA as the genetic material?

By showing that radioisotopes can be used to label DNA and protein separately. Signup and view all the answers

What is the role of purine-to-pyrimidine bonding in DNA helix stability?

To stabilize the double helix structure of DNA. Signup and view all the answers

How does the numbering of carbons in ribose and deoxyribose relate to the structure of a nucleotide?

It provides a framework for linking nitrogen bases to the sugar-phosphate backbone. Signup and view all the answers