DNA structure, gene expression, and mutation types (point, frameshift, silent) tested at the introductory genetics level.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What is the overall three-dimensional shape of a DNA molecule?
- A double helix
- What are the three components of a single DNA nucleotide?
- A phosphate group, a deoxyribose sugar, and a nitrogenous base
- What five-carbon sugar is found in DNA?
- Deoxyribose
- What five-carbon sugar is found in RNA?
- Ribose
- In DNA base pairing, adenine pairs with which base?
- Thymine
- In DNA base pairing, guanine pairs with which base?
- Cytosine
- How many hydrogen bonds hold an adenine-thymine base pair together?
- Two
- How many hydrogen bonds hold a guanine-cytosine base pair together?
- Three
- Which two nitrogenous bases are classified as purines?
- Adenine and guanine
- Which two nitrogenous bases are classified as pyrimidines in DNA?
- Cytosine and thymine
- How are the two strands of a DNA double helix oriented relative to each other?
- Antiparallel, running in opposite directions
- What forms the backbone of each DNA strand?
- Alternating sugar and phosphate groups
- Which two scientists are credited with proposing the double helix model of DNA in 1953?
- James Watson and Francis Crick
- What is the central dogma of molecular biology?
- Genetic information flows from DNA to RNA to protein
- What is transcription?
- The process of copying a DNA sequence into RNA