DNA (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What percentage of a chromosome is DNA?
What percentage of a chromosome is DNA?
40%
What are the proteins called that help organise DNA in chromosomes?
What are the proteins called that help organise DNA in chromosomes?
Histones
In which year was the structure of DNA discovered?
In which year was the structure of DNA discovered?
1953
Approximately how much DNA does each human cell contain?
Approximately how much DNA does each human cell contain?
3 metres
What shape does DNA form?
What shape does DNA form?
Double helix
How many parts make up a nucleotide?
How many parts make up a nucleotide?
Three
What is the sugar in DNA nucleotides called?
What is the sugar in DNA nucleotides called?
Deoxyribose
Which base does adenine pair with in DNA?
Which base does adenine pair with in DNA?
Thymine
Which base does cytosine pair with in DNA?
Which base does cytosine pair with in DNA?
Guanine
How many hydrogen bonds join cytosine and guanine?
How many hydrogen bonds join cytosine and guanine?
3
Which bases are classified as purines?
Which bases are classified as purines?
Adenine and guanine
Which bases are classified as pyrimidines?
Which bases are classified as pyrimidines?
Cytosine and thymine