Higher Human Biology, both sections.

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Question 1Section 1 style

mRNA codons and what they code for: AUG Met (start), UUC Phe, GAA Glu, UAA stop, UAC Tyr, AAG Lys, CUU Leu, AUU Ile.
mRNA codon	Codes for
AUG	Met (start)
UUC	Phe
GAA	Glu
UAA	stop
UAC	Tyr
AAG	Lys
CUU	Leu
AUU	Ile

A DNA template strand has the base sequence TAC AAG CTT ATT. The table gives some mRNA codons and what they code for: AUG Met (start), UUC Phe, GAA Glu, UAA stop, UAC Tyr, AAG Lys, CUU Leu, AUU Ile. Which sequence of amino acids is produced?

Eight sections, one paper

Built for the SQA Higher Human Biology exam from session 2026-27: every key area in the current course specification (version 5.0), with Section 1 style multiple choice and Section 2 style questions. Not built for Higher Biology, National 5 or Advanced Higher, or the assignment.

1. Cells, DNA and gene expression

2. Mutations, genomics and metabolic pathways

3. Cellular respiration and energy in muscle

4. Reproduction, fertility and screening

5. Blood vessels and the heart

6. Cardiovascular disease, blood glucose and obesity

7. The nervous system, memory and synapses

8. Defence against disease, immunisation and clinical trials

Section	Questions	Marks
Section 1	Multiple-choice questions.	20 marks
Section 2	Restricted-response and extended-response questions, including a data-handling question, an experimental design question and two extended responses with a choice of topic.	80 marks

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