The Genetic Code (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 does the sequence of DNA bases determine?
What does the sequence of DNA bases determine?
The sequence of amino acids in proteins
How many different nitrogen-containing bases are found in DNA?
How many different nitrogen-containing bases are found in DNA?
4
Which base does adenine always pair with in DNA?
Which base does adenine always pair with in DNA?
Thymine
Which base does cytosine always pair with in DNA?
Which base does cytosine always pair with in DNA?
Guanine
How many hydrogen bonds join adenine and thymine?
How many hydrogen bonds join adenine and thymine?
2
How many hydrogen bonds join cytosine and guanine?
How many hydrogen bonds join cytosine and guanine?
3
How many DNA bases form a triplet or codon?
How many DNA bases form a triplet or codon?
3
What does each triplet (codon) code for?
What does each triplet (codon) code for?
A specific amino acid
Which amino acid does the triplet CAA code for?
Which amino acid does the triplet CAA code for?
Valine
Which amino acid does the triplet CGA code for?
Which amino acid does the triplet CGA code for?
Alanine
What percentage of DNA in human cells does not code for proteins?
What percentage of DNA in human cells does not code for proteins?
Up to 97%
What is the main role of non-coding DNA?
What is the main role of non-coding DNA?
Regulating expression of genes