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Questions and Answers
What are the components of DNA?
What are the components of DNA?
- Adenine, Guanine, Cytosine, Uracil
- Adenine, Guanine, Cytosine, Thymine (correct)
- Adenine, Thymine, Cytosine, Ribose
- Adenine, Uracil, Cytosine, Thymine
Which component is unique to DNA and not found in RNA?
Which component is unique to DNA and not found in RNA?
- Uracil
- Cytosine
- Adenine
- Thymine (correct)
What is the structure of DNA known as?
What is the structure of DNA known as?
- Triple helix
- Coiled strand
- Double helix (correct)
- Single strand
What type of bond holds the nitrogenous bases together in the DNA double helix?
What type of bond holds the nitrogenous bases together in the DNA double helix?
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Which component of DNA forms the 'backbone' of the DNA double helix?
Which component of DNA forms the 'backbone' of the DNA double helix?
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Which enzyme is responsible for unwinding the DNA double helix during replication?
Which enzyme is responsible for unwinding the DNA double helix during replication?
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Study Notes
DNA Components
- DNA is composed of three main components: phosphate groups, sugar molecules, and nitrogenous bases.
- The sugar molecules in DNA are deoxyribose.
Unique Component of DNA
- Deoxyribose, a type of sugar molecule, is unique to DNA and not found in RNA.
DNA Structure
- The structure of DNA is known as a double helix.
Bonding in DNA
- Hydrogen bonds hold the nitrogenous bases together in the DNA double helix.
Backbone of DNA
- The phosphate groups and sugar molecules form the 'backbone' of the DNA double helix.
DNA Replication
- The enzyme helicase is responsible for unwinding the DNA double helix during replication.
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