What is a nucleotide?
8th Ch 2:3-DNA and Genetics

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Science
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A nucleotide is the basic building block of DNA and RNA, consisting of a sugar, a phosphate group, and a nitrogen base.
2.
FLASHCARD QUESTION
Front
What are the four nitrogen bases in DNA?
Back
The four nitrogen bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).
3.
FLASHCARD QUESTION
Front
What does the term 'base pairing' refer to in DNA?
Back
Base pairing refers to the specific pairing of nitrogen bases in DNA: adenine pairs with thymine, and cytosine pairs with guanine.
4.
FLASHCARD QUESTION
Front
What is the role of mRNA in protein synthesis?
Back
mRNA (messenger RNA) carries the genetic information from DNA to the ribosome, where proteins are synthesized.
5.
FLASHCARD QUESTION
Front
Define transcription in the context of genetics.
Back
Transcription is the process of copying a segment of DNA into RNA, specifically mRNA.
6.
FLASHCARD QUESTION
Front
What is replication in DNA?
Back
Replication is the process of making an identical copy of DNA before cell division.
7.
FLASHCARD QUESTION
Front
What is a mutation?
Back
A mutation is a change in the nucleotide sequence of a gene, which can lead to changes in the protein produced.
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