Term
| Outline nucleotide structure in terms of: |
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Definition
- sugar = deoxyribose
- nitrogenous base
- phosphate group |
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Term
| State the names of the four nitrogenous bases in DNA. |
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Definition
- adenine
- guanine
- thymine
- cytosine |
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Term
| Outline how the DNA nucelotides are linked together by covalent bonds into a single strand. |
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Definition
- backbone: deoxyribose-phosphate-deoxyribose-phosphate
- nitrogenous base attached to deoxyribose |
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Term
Explain: how a DNA double helix is formed using:
Complementary base pairing |
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Definition
- A = T: adenine forms two hydrogen bonds with its complementary base, thymine
- G = C: guanine forms three hydrogen bonds with its complementary base, cytosine |
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Term
Explain: how a DNA double helix is formed using:
Hydrogen bonds |
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Definition
- the combination of hydrogen bonds between A=T and G=C hold the two strands of DNA together
- each strand forms a helix, the two strands together form a double helix |
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