DNA Structure (AQA GCSE Biology): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What type of molecule is DNA?
What type of molecule is DNA?
A polymer
How many components make up a single nucleotide?
How many components make up a single nucleotide?
Three
What forms the backbone of a DNA strand?
What forms the backbone of a DNA strand?
Sugar and phosphate
Which base is NOT found in DNA?
Which base is NOT found in DNA?
Uracil
In complementary base pairing, which base does Adenine pair with?
In complementary base pairing, which base does Adenine pair with?
Thymine
What is the structure formed by two DNA strands twisting together?
What is the structure formed by two DNA strands twisting together?
Double helix
How many bases make up a codon?
How many bases make up a codon?
Three
How many different types of amino acids are there?
How many different types of amino acids are there?
20
What is the main function of non-coding DNA?
What is the main function of non-coding DNA?
Regulating gene expression
Where does transcription occur?
Where does transcription occur?
In the nucleus
Where does translation take place?
Where does translation take place?
At the ribosome in the cytoplasm
Which mutation involves an extra base being added to the DNA sequence?
Which mutation involves an extra base being added to the DNA sequence?
Insertion
What can happen to an enzyme if a mutation significantly changes its structure?
What can happen to an enzyme if a mutation significantly changes its structure?
It may lose its ability to bind substrate