Structure of RNA & DNA (AQA A-Level Biology): 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 essential components of a nucleotide?
What are the three essential components of a nucleotide?
Pentose sugar, phosphate, nitrogenous base
What type of bond forms between nucleotides in a polynucleotide chain?
What type of bond forms between nucleotides in a polynucleotide chain?
Phosphodiester bond
Which pentose sugar is present in RNA?
Which pentose sugar is present in RNA?
Ribose
Which pentose sugar is found in DNA?
Which pentose sugar is found in DNA?
Deoxyribose
Which nitrogenous base is present in RNA but not in DNA?
Which nitrogenous base is present in RNA but not in DNA?
Uracil
In DNA, which base always pairs with adenine?
In DNA, which base always pairs with adenine?
Thymine
What shape does the DNA molecule form?
What shape does the DNA molecule form?
Double helix
What type of bonds hold the two DNA strands together?
What type of bonds hold the two DNA strands together?
Hydrogen bonds
How does RNA structure differ from DNA structure?
How does RNA structure differ from DNA structure?
RNA is single-stranded; DNA is double
Due to base pairing rules, what is always equal in DNA?
Due to base pairing rules, what is always equal in DNA?
Quantities of adenine and thymine