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Dna Structure (biology Only) (GCSE Biology)
The following is a GCSE Biology test covering 'Dna Structure (biology Only)' from the broader topic Inheritance, Variation And Evolution. The test is geared towards the AQA exam board style syllabus.Incorrect: 0
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Which of the following best defines an allele?
In humans, DNA is packaged into structures called chromosomes. Where in the cell are chromosomes normally found?
Which two components form the backbone of a DNA strand?
How does a frameshift mutation affect a protein-coding gene?
What term describes a stretch of DNA that codes for a single protein?
What is the role of helicase in DNA replication?
DNA replication is described as semi-conservative. What does this mean?
Which statement correctly describes the difference between DNA and RNA?
During DNA replication, which enzyme is mainly responsible for adding new nucleotides to a growing strand?
What is meant by the term “codon” in the context of DNA and protein synthesis?
In the DNA double helix, which bases pair together by complementary base pairing?
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