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DNA Replication · Paper 1 — Free Biology HL Practice Questions
1FoundationMCQDNA structure and replication mechanism1 markPaper 1~2 min
A segment of double-stranded DNA contains 20 percent of its nitrogenous bases as guanine. According to Chargaff's rules, what percentage of the bases in this segment is thymine?
Solutions
2FoundationMCQDNA structure and replication mechanism1 markPaper 1~2 min
In a DNA double helix, the two strands run antiparallel to each other. Each strand has a repeating structural framework to which the nitrogenous bases are attached on the interior. Which combination of molecules forms this repeating framework, known as the sugar-phosphate backbone, of each DNA strand?
Solutions
3MasteryMCQDNA structure and replication mechanism1 markPaper 1~2 min
In a double-stranded DNA molecule, 30 percent of the bases are adenine. What percentage of the bases is guanine?
Solutions
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