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Year 12 QCE Biology practice questions
Use this no-login public demo to preview Skill Align's Year 12 QCE Biology sample questions, explanations, exercise mode, and test mode before regular practice.
Sample-question focus
Try a short public sample of Year 12 QCE Biology questions selected from the reviewed Skill Align demo set.
Skills covered
Practice cells, living systems, ecosystems, genetics, evolution, biodiversity, disease, biotechnology, and scientific inquiry.
Exercise and test mode
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Curriculum link
Compare this demo with the QCE Year 11-12 Biology curriculum page to scan related topics, subtopics, and pathway coverage.
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Sample practice questions
These sample questions are visible on the page before login. Use them to check the style of the answers and worked explanations, then open the no-login demo for a longer practice set.
practiceQCE Year 12 Biology practice questionsDNA and geneshardprotein-synthesis diagram
1. A DNA template triplet is CGA. Which mRNA codon is transcribed from it?
Choices
GCU
CGA
GCT
UCG
Explanation:
RNA uses complementary pairing with U in place of T: C pairs with G, G with C, and A with U.
practiceQCE Year 12 Biology practice questionsHeredityhardPunnett square
2. A Punnett square shows Bb x bb. What proportion of offspring are expected to be bb?
Choices
50%
25%
75%
100%
Explanation:
The Bb parent can pass B or b, while the bb parent passes b. Half the boxes are bb.
practiceQCE Year 12 Biology practice questionsImmunityhardimmune-response graph
3. The graph shows antibody concentration rising after vaccination without severe illness. What is the role of the vaccine antigen?
Choices
It stimulates immune memory.
It becomes a ribosome.
It destroys every antibody.
It prevents all cell division.
Explanation:
Vaccine antigens can trigger lymphocyte activation and memory-cell formation without causing the full disease.
practiceQCE Year 12 Biology practice questionsContinuity of lifeharddisease-spread graph
4. A disease curve falls after the average number of new infections per case drops below 1. Which statement is supported?
Choices
Transmission is not being sustained.
The pathogen has no genetic material.
Every host is infected at once.
The population must be extinct.
Explanation:
When each case causes fewer than one new case on average, the outbreak declines over time.
practiceQCE Year 12 Biology practice questionsBiotechnologyhardDNA gel diagram
5. A gel diagram shows the smallest DNA fragment at the band furthest from the wells. Which labelled band is smallest?
Choices
Band D
Band A
Band B
The well
Explanation:
Small DNA fragments move more easily through the gel and travel further from the wells.
practiceQCE Year 12 Biology practice questionsHomeostasishardhomeostasis loop
6. A feedback loop shows blood glucose dropping below normal during fasting. Which hormone response helps raise it?
Choices
Glucagon secretion increases.
Insulin secretion increases only.
Antibodies digest glucose.
Blood glucose cannot change.
Explanation:
Glucagon stimulates release of glucose into the blood, helping return levels toward normal.
For parents checking senior maths readiness
Year 10 practice can help identify whether a student is comfortable with algebra, geometry, trigonometry, statistics, and probability before choosing senior maths pathways. The demo is a quick way to sample those areas without creating an account.
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Practice Summary
Year 12 · QCE Biology · Test mode · 18 questions · 10 min
Questions attempted0 / 18
Correct answersPending
Score-
Attempt Mode
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Does this page include Year 12 QCE Biology practice questions?
Yes. This public demo includes reviewed Year 12 QCE Biology sample questions so families can preview the Skill Align practice style before regular use.
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Yes. The public demo can be opened without signing up, and the attempt stays in the page instead of being saved to a student record.
How does this demo relate to curriculum coverage?
This demo is linked with the QCE Year 11-12 Biology curriculum coverage page, where parents can compare the broader topic and pathway structure used for Skill Align practice.
