DNA and RNA (LC 2026) (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 made up of DNA?
What percentage of a chromosome is made up of DNA?
40%
What is the role of histones in chromosomes?
What is the role of histones in chromosomes?
They help organise the DNA
Who discovered the structure of DNA in 1953?
Who discovered the structure of DNA in 1953?
Watson and Crick
How much DNA does each human cell contain?
How much DNA does each human cell contain?
About 3 metres
What shape does DNA form?
What shape does DNA form?
Double helix
What are the three components of a nucleotide?
What are the three components of a nucleotide?
Phosphate, sugar, base
What is the name of the sugar in DNA?
What is the name of the sugar in DNA?
Deoxyribose
Which base does adenine (A) pair with in DNA?
Which base does adenine (A) pair with in DNA?
Thymine (T)
Which base does cytosine (C) pair with in DNA?
Which base does cytosine (C) pair with in DNA?
Guanine (G)
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
What is the complementary strand to AATCGA?
What is the complementary strand to AATCGA?
TTAGCT