Flashcards on Structure of DNA

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What is the structure of DNA?

DNA has a double helix structure made up of nucleotides.

What are the components of a DNA nucleotide?

A DNA nucleotide consists of a phosphate group, a sugar molecule (deoxyribose), and a nitrogenous base.

How are the two DNA strands held together?

The two DNA strands are held together by hydrogen bonds between complementary nitrogenous bases.

What are the four nitrogenous bases in DNA?

The four nitrogenous bases in DNA are adenine, thymine, cytosine, and guanine.

What is the complementary base pairing in DNA?

Adenine pairs with thymine, and cytosine pairs with guanine in DNA.

What holds the backbone of the DNA molecule together?

The backbone of the DNA molecule is held together by phosphodiester bonds.

What is the function of DNA?

DNA carries the genetic information and instructions for the development and functioning of living organisms.

What is the importance of the double helix structure of DNA?

The double helix structure of DNA allows for replication and transmission of genetic information.

What is the role of DNA in protein synthesis?

DNA provides the instructions to produce proteins through the process of transcription and translation.

What happens during DNA replication?

During DNA replication, the DNA molecule unwinds and each strand serves as a template for the synthesis of a new complementary strand.

What would happen if the DNA structure was disrupted or damaged?

Disruption or damage to the DNA structure can lead to mutations and genetic disorders.

How does the structure of DNA contribute to genetic diversity?

The structure of DNA allows for genetic recombination and the exchange of genetic material during sexual reproduction, leading to genetic diversity.

Who discovered the structure of DNA?

James Watson and Francis Crick, along with Rosalind Franklin and Maurice Wilkins, are credited with discovering the structure of DNA.

What techniques were used to determine the structure of DNA?

X-ray crystallography and model building were used to determine the structure of DNA.

Can DNA be found in all cells?

Yes, DNA can be found in almost all cells of living organisms.

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Test Your Knowledge


Which of the following is not a component of a DNA nucleotide?



What holds the two DNA strands together?



Which nitrogenous base pairs with thymine in DNA?



What is the function of DNA?



What is the shape of the DNA molecule?



What does DNA stand for?



Which scientist(s) are credited with discovering the structure of DNA?



What process involves the synthesis of a new DNA strand using an existing DNA strand as a template?



How does DNA contribute to genetic diversity?



What happens to DNA during the process of DNA replication?




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