DNA and anticancer drugs

DNA and anticancer drugs Quiz

Spec 3.3.13.4–5 · AQA A-Level Chemistry: Quiz

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  1. 1. Which base pairs with guanine in DNA?

    • A. Adenine
    • B. Thymine
    • C. Cytosine
    • D. Uracil

  2. 2. Which bond is formed between cisplatin and DNA?

    • A. Hydrogen bond between Pt and O
    • B. Dative covalent bond between Pt and N of guanine
    • C. Ionic bond between Pt and phosphate
    • D. Covalent bond between Pt and thymine

  3. 3. A sample of double-stranded DNA is 30% thymine by number of bases. What percentage is guanine?

    • A. 20%
    • B. 30%
    • C. 40%
    • D. 60%

  4. 4. Why can DNA strands separate during copying?

    • A. The backbone has weak ionic bonds
    • B. The bases are covalently bonded to each other
    • C. The phosphate groups repel the sugars
    • D. Hydrogen bonds between the bases are weak

  5. 5. Why does cisplatin cause hair loss and nausea?

    • A. It only attacks the hair and gut
    • B. It increases DNA replication
    • C. It also bonds to DNA in healthy, rapidly dividing cells
    • D. It is not a complex ion

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