DNA (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are the three components of a nucleotide?
What are the three components of a nucleotide?
Phosphate, 2-deoxyribose, nitrogenous base
What is the name of the pentose sugar found in DNA?
What is the name of the pentose sugar found in DNA?
2-deoxyribose
Which bases are purines with double-ring structures?
Which bases are purines with double-ring structures?
Adenine and Guanine
Which bases are pyrimidines with single-ring structures?
Which bases are pyrimidines with single-ring structures?
Cytosine and Thymine
What type of bond links nucleotides in DNA?
What type of bond links nucleotides in DNA?
Phosphodiester bond
What process forms the sugar-phosphate backbone of DNA?
What process forms the sugar-phosphate backbone of DNA?
Condensation polymerisation
Which base does adenine pair with in DNA?
Which base does adenine pair with in DNA?
Thymine
How many hydrogen bonds form between adenine and thymine?
How many hydrogen bonds form between adenine and thymine?
Two
How many hydrogen bonds form between guanine and cytosine?
How many hydrogen bonds form between guanine and cytosine?
Three
What does antiparallel mean in DNA structure?
What does antiparallel mean in DNA structure?
Strands run in opposite directions