Podcast
Questions and Answers
Which of the following components is part of a nucleotide?
Which of the following components is part of a nucleotide?
- Hydroxyl group
- Amino group
- Carboxyl group
- Phosphate group (correct)
DNA has six different bases that bond in specific pairs.
DNA has six different bases that bond in specific pairs.
False (B)
What shape is a DNA molecule twisted into?
What shape is a DNA molecule twisted into?
double helix
In DNA, adenine pairs with _____ and cytosine pairs with _____.
In DNA, adenine pairs with _____ and cytosine pairs with _____.
Match the components of a nucleotide with their descriptions.
Match the components of a nucleotide with their descriptions.
Flashcards
DNA structure
DNA structure
A DNA molecule is composed of two long strands, each made of building blocks called nucleotides.
Nucleotide components
Nucleotide components
Each nucleotide is made of three components: a phosphate group, a deoxyribose sugar, and a nitrogen-containing base.
DNA bases
DNA bases
DNA has four different bases: adenine, thymine, cytosine, and guanine.
Base pairing
Base pairing
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Base pairing rules
Base pairing rules
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Study Notes
DNA Structure
- DNA is a double-stranded molecule.
- Each strand is composed of nucleotides.
- Each nucleotide has a phosphate group, a deoxyribose sugar, and a nitrogenous base.
- Four different bases exist: adenine (A), thymine (T), cytosine (C), and guanine (G).
- The bases pair specifically: A with T, and C with G.
- The pairing of bases is held together by hydrogen bonds.
- The two strands twist into a double helix shape.
- The strands run antiparallel to each other.
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