AQA AS BIOLOGY Paper 1 QP 2021 package deal
AS Biology Paper 1 2021 with correct answers 100% Question 1.2 - Correct Answer 1489 method (4.38x10^3 / 5) x 1.7= 1489 Two differences between tRNA and mRNA structure - Correct Answer tRNA has amino acid binding site, mRNA doesn't tRNA has anticodon, mRNA has codon Difference in mRNA and pre-mRNA - Correct Answer mRNA has fewer nucleotides d