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Questions and Answers
What component forms the backbone of the DNA structure?
What component forms the backbone of the DNA structure?
- Nitrogenous bases
- Proteins and lipids
- Deoxyribose sugar and phosphate groups (correct)
- Adenine and thymine
Which pair of nitrogenous bases in DNA forms two hydrogen bonds?
Which pair of nitrogenous bases in DNA forms two hydrogen bonds?
- Cytosine and thymine
- Adenine and thymine (correct)
- Adenine and guanine
- Cytosine and guanine
What is the role of DNA during transcription?
What is the role of DNA during transcription?
- It is translated into DNA.
- It is copied into messenger RNA (mRNA). (correct)
- It replicates itself for cell division.
- It creates a protein directly.
How do mutations in DNA affect organisms?
How do mutations in DNA affect organisms?
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What is created in the major and minor grooves of the DNA double helix?
What is created in the major and minor grooves of the DNA double helix?
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Study Notes
DNA Structure
- Deoxyribose sugar and phosphate groups form the backbone of the DNA structure.
- Adenine (A) and thymine (T) form two hydrogen bonds in DNA.
DNA Function
- DNA serves as a template for transcription, where the genetic information is copied into RNA.
Mutations in DNA
- Mutations in DNA can lead to changes in protein structure and function, potentially causing diseases or altering an organism's traits.
DNA Grooves
- The major and minor grooves in the DNA double helix provide binding sites for proteins that can interact with the genetic code, playing crucial roles in gene regulation and other processes.
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