Proteins and Nucleic Acids (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
How many components make up a single nucleotide?
How many components make up a single nucleotide?
Three
How many hydrogen bonds form between guanine and cytosine in DNA?
How many hydrogen bonds form between guanine and cytosine in DNA?
Three
Which nitrogenous bases are classified as purines?
Which nitrogenous bases are classified as purines?
Adenine and guanine
Which nitrogenous base is found in RNA but not in DNA?
Which nitrogenous base is found in RNA but not in DNA?
Uracil
In semi-conservative replication, what does each new DNA molecule contain?
In semi-conservative replication, what does each new DNA molecule contain?
One original and one new strand
Which enzyme catalyses the breaking of hydrogen bonds between DNA base pairs during replication?
Which enzyme catalyses the breaking of hydrogen bonds between DNA base pairs during replication?
Helicase
How many bases form one codon in the genetic code?
How many bases form one codon in the genetic code?
Three
What is the function of the anticodon on a tRNA molecule?
What is the function of the anticodon on a tRNA molecule?
Pairs with mRNA codons
Which pentose sugar is found in RNA nucleotides?
Which pentose sugar is found in RNA nucleotides?
Ribose
In which direction does RNA polymerase move along the DNA template strand during transcription?
In which direction does RNA polymerase move along the DNA template strand during transcription?
3' to 5'