100+ Free VCE Biology Practice Questions

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Key Facts: VCE Biology Exam

120 marks

Total marks on the VCE Biology Units 3 & 4 end-of-year examination

VCAA VCE Biology examination specifications

40 questions

Section A of the exam is 40 multiple-choice questions worth 40 marks

VCAA VCE Biology examination

80 marks

Section B short-answer and extended-response questions are worth 80 marks

VCAA VCE Biology examination

2 hours 30 minutes

Writing time, plus 15 minutes of reading time

VCAA VCE examination timetable

50%

The examination contributes 50% of the Units 3 and 4 study score

VCAA VCE Biology study design

4 areas of study

Nucleic acids and proteins, biochemical pathways, responding to antigens, and change over time

VCAA VCE Biology 2022-2026 study design

2022-2026

Current accreditation period of the VCE Biology study design

VCAA VCE Biology study design

100

Free original practice questions in this bank

OpenExamPrep

VCE Biology Units 3 & 4 is the VCAA Year 12 biology course under the 2022-2026 study design, assessed by School-assessed Coursework (50%) and one end-of-year written examination (50%). The examination is worth 120 marks: Section A has 40 multiple-choice questions (40 marks) and Section B has short-answer and extended-response questions (80 marks), with 2 hours 30 minutes writing time and 15 minutes reading time. The four areas of study are nucleic acids and proteins, biochemical pathways (photosynthesis and cellular respiration), responding to antigens (immunity), and change over time (genetics and evolution). The study score is reported on a 0-50 scale and there is no fixed pass mark. This 100-question bank provides original multiple-choice practice across all four areas of study.

Sample VCE Biology Practice Questions

Try these sample questions to test your VCE Biology exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which statement correctly describes a difference between DNA and RNA nucleotides?

A.DNA contains ribose while RNA contains deoxyribose

B.DNA contains uracil while RNA contains thymine

C.DNA contains deoxyribose while RNA contains ribose

D.DNA is single-stranded while RNA is always double-stranded

Explanation: DNA nucleotides contain the sugar deoxyribose, whereas RNA nucleotides contain ribose, which has an additional hydroxyl group on the 2' carbon. This sugar difference is a defining structural distinction between the two nucleic acids.

2In a double-stranded DNA molecule, adenine pairs with thymine using how many hydrogen bonds?

A.One

B.Two

C.Three

D.Four

Explanation: Adenine and thymine form two hydrogen bonds, while guanine and cytosine form three. The greater number of hydrogen bonds in G-C pairs makes regions rich in G-C more thermally stable.

3During transcription in a eukaryotic cell, which enzyme synthesises a pre-mRNA strand using a DNA template?

A.DNA polymerase

B.RNA polymerase

C.DNA ligase

D.Reverse transcriptase

Explanation: RNA polymerase binds to the promoter and synthesises a complementary pre-mRNA strand from a DNA template, adding RNA nucleotides in the 5' to 3' direction. It does not require a primer, unlike DNA polymerase.

4Before a eukaryotic pre-mRNA leaves the nucleus, introns are removed and exons are joined. This process is called:

A.Translation

B.RNA splicing

C.Replication

D.Polyadenylation

Explanation: RNA splicing removes non-coding introns and joins the coding exons to produce mature mRNA. Alternative splicing of the same pre-mRNA can produce different mature mRNAs and therefore different proteins.

5A DNA template strand reads 3'-TAC GGA TTA-5'. What is the corresponding mRNA codon sequence (5' to 3')?

A.AUG CCU AAU

B.AUG GGA UUA

C.TAC GGA TTA

D.UAC CCU AAU

Explanation: mRNA is complementary and antiparallel to the template, with uracil replacing thymine. Pairing each template base (T-A, A-U, C-G, G-C) gives 5'-AUG CCU AAU-3', which begins with the AUG start codon.

6The genetic code is described as degenerate (redundant). This means that:

A.Each codon can code for several different amino acids

B.Most amino acids can be specified by more than one codon

C.The code differs between every species

D.Codons are read with overlapping reading frames

Explanation: Degeneracy means multiple codons can specify the same amino acid; for example, six codons code for leucine. This buffers some point mutations, especially at the third base, against changing the amino acid.

7During translation, the amino acid carried by a tRNA is matched to the correct mRNA codon by the tRNA's:

A.Anticodon

B.Promoter

C.Poly-A tail

D.Operator

Explanation: Each tRNA has an anticodon that base-pairs with the complementary mRNA codon at the ribosome, ensuring the correct amino acid is added to the growing polypeptide. This matching is central to accurate translation.

8A secreted protein is synthesised and processed before leaving the cell. Which sequence of organelles correctly shows its path?

A.Golgi apparatus, rough ER, secretory vesicle, plasma membrane

B.Rough ER, Golgi apparatus, secretory vesicle, plasma membrane

C.Nucleus, smooth ER, lysosome, plasma membrane

D.Ribosome, mitochondrion, Golgi apparatus, plasma membrane

Explanation: Proteins destined for secretion are made on ribosomes of the rough ER, packaged into transport vesicles to the Golgi for modification, then carried in secretory vesicles that fuse with the plasma membrane (exocytosis). This is the endomembrane secretory pathway.

9The specific three-dimensional folded shape of a functional protein is most directly determined by its:

A.Quaternary number of subunits only

B.Sequence of amino acids (primary structure)

C.Number of ribosomes that made it

D.Concentration in the cytosol

Explanation: The primary structure, the sequence of amino acids, determines how the chain folds into secondary, tertiary and (where relevant) quaternary structures because the chemical properties of each R-group drive the folding interactions. A change in sequence can therefore alter shape and function.

10The proteome of a cell is best defined as:

A.The full set of genes in the cell

B.The complete set of proteins expressed by the cell at a given time

C.The total mRNA present in the cell

D.All the ribosomes in the cell

Explanation: The proteome is the entire set of proteins a cell or organism can express under particular conditions and at a particular time. Because gene expression varies, the proteome is dynamic even though the genome is essentially fixed.

About the VCE Biology Exam

VCE Biology is the Year 12 senior secondary biology course set by the Victorian Curriculum and Assessment Authority (VCAA) under the 2022-2026 study design. Units 3 and 4 are studied as a sequence and assessed by School-assessed Coursework and a single end-of-year written examination. Unit 3, 'How do cells maintain life?', covers the role of nucleic acids and proteins and the regulation of biochemical pathways including photosynthesis and cellular respiration. Unit 4, 'How does life change and respond to challenges?', covers how organisms respond to antigens through innate and adaptive immunity and how life changes over time through genetic variation, natural selection and evolution. The examination has a multiple-choice Section A worth 40 marks and a Section B of short-answer and extended-response questions worth 80 marks.

Assessment

End-of-year written examination on Units 3 and 4. Section A: 40 multiple-choice questions (40 marks). Section B: short-answer and extended-response questions (80 marks). Total 120 marks.

Time Limit

2 hours 30 minutes writing time plus 15 minutes reading time.

Passing Score

No fixed pass mark. The examination contributes 50% to the Units 3 and 4 study score (0-50 scale), with School-assessed Coursework contributing the remaining 50%.

Exam Fee

There is no separate sitting fee for the VCE Biology examination; VCE examination costs are covered by student fees and charges paid through the student's school. (Victorian Curriculum and Assessment Authority (VCAA))

VCE Biology Exam Content Outline

25%

Unit 3 AOS1: Nucleic acids and proteins

DNA and RNA structure, gene structure and the genetic code, transcription and translation, gene regulation in prokaryotes and eukaryotes, protein structure and the secretory pathway, the proteome, and gene technologies including recombinant DNA, PCR, CRISPR-Cas9 and applications in medicine and agriculture.

25%

Unit 3 AOS2: Biochemical pathways

Enzyme function and the regulation, rate and factors affecting biochemical pathways; the inputs, outputs and stages of photosynthesis (light-dependent and Calvin cycle) and cellular respiration (glycolysis, Krebs cycle, electron transport chain, anaerobic fermentation); and biotechnological applications such as anaerobic biofuel production and improving crop yields.

25%

Unit 4 AOS1: Responding to antigens

Physical, chemical and microbiota barriers; the innate immune response and inflammation; antigens and pathogens (cellular and non-cellular); the adaptive humoral and cell-mediated responses; lymphocytes, antibodies, and immunological memory; vaccination and herd immunity; allergies, autoimmune disease, and immunotherapies including monoclonal antibodies.

25%

Unit 4 AOS2: Change over time

Sources of genetic variation including mutation and meiosis; inheritance, pedigrees and gene pools; allele frequency change, natural selection and selection pressures; speciation and isolating mechanisms; evidence for evolution including the fossil record and molecular homology; dating techniques; and structural, behavioural and molecular changes in hominin evolution and species relatedness.

How to Pass the VCE Biology Exam

What You Need to Know

Passing score: No fixed pass mark. The examination contributes 50% to the Units 3 and 4 study score (0-50 scale), with School-assessed Coursework contributing the remaining 50%.
Assessment: End-of-year written examination on Units 3 and 4. Section A: 40 multiple-choice questions (40 marks). Section B: short-answer and extended-response questions (80 marks). Total 120 marks.
Time limit: 2 hours 30 minutes writing time plus 15 minutes reading time.
Exam fee: There is no separate sitting fee for the VCE Biology examination; VCE examination costs are covered by student fees and charges paid through the student's school.

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

VCE Biology Study Tips from Top Performers

1Map your revision to the four areas of study and the VCAA key knowledge dot points, then test each one with multiple-choice questions to find gaps.

2Practise reading questions carefully for command terms and qualifiers; Section A distractors often differ by a single biological detail such as a stage, location or molecule.

3Learn the inputs, outputs and locations of photosynthesis and cellular respiration as a table so you can answer biochemical pathway questions quickly.

4For immunity, be able to distinguish innate from adaptive and humoral from cell-mediated responses, and link each cell type to its specific role.

5For evolution and genetics, practise interpreting pedigrees, allele-frequency data and phylogenetic trees rather than only memorising definitions.

6Work through official VCAA past examinations and examination reports to learn the question style and how the assessors expect responses to be framed.

Frequently Asked Questions

How is the VCE Biology Units 3 & 4 examination structured?

The end-of-year written examination is worth 120 marks. Section A has 40 multiple-choice questions worth 40 marks, and Section B has short-answer and extended-response questions worth 80 marks. Students have 2 hours 30 minutes of writing time plus 15 minutes of reading time.

What are the four areas of study in VCE Biology Units 3 and 4?

Unit 3 covers nucleic acids and proteins (Area of Study 1) and biochemical pathways such as photosynthesis and cellular respiration (Area of Study 2). Unit 4 covers responding to antigens and immunity (Area of Study 1) and change over time through genetics and evolution (Area of Study 2).

How much does the exam count towards the study score?

The end-of-year examination contributes 50% to the Units 3 and 4 study score, which is reported on a 0-50 scale. School-assessed Coursework (SACs) contributes the other 50%. There is no fixed pass mark.

Which study design does this practice cover?

This practice is aligned to the VCAA VCE Biology 2022-2026 study design key knowledge for Units 3 and 4. Always confirm the current study design and exam specifications on the VCAA website.

Is a calculator allowed in the VCE Biology exam?

An approved scientific calculator is permitted in the VCE Biology examination. Check the VCAA examination specifications and approved materials list each year before the exam.

Are these official VCAA examination questions?

No. These are original OpenExamPrep questions modelled on the VCAA Section A multiple-choice style and the 2022-2026 study design. VCAA publishes official past examinations and examination reports separately on its website.