These questions cover how a gene becomes a protein: transcription, RNA processing, translation with codons, anticodons and tRNA, protein structure, and how genes and the environment work together to make a phenotype. Codons used: AUG = Met (start), GCA = Ala, UUU = Phe, UGG = Trp, GAG = Glu, GUG = Val, ACC = Thr; UAA, UAG and UGA are stop codons. They start easy and get harder. Stuck? Tap Show a hint for one step at a time.
Sign in to take HSC practice
20 questions with instant marking. It is free, and your scores are saved to your account so you can carry on from any device.
Turn on JavaScript to sign in and take the quiz.