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100+ Free Biology License (STT) Practice Questions

Pass your Saudi Specialized Professional License Test - Biology (ETEC/Qiyas) exam on the first try — instant access, no signup required.

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Key Facts: Biology License (STT) Exam

Saudi biology teachers take ETEC/Qiyas professional licensure tests—a general pedagogical MCQ exam plus a specialized biology subject-knowledge (STT) exam—after meeting Ministry eligibility. This free bank offers 100 practice questions on cell biology, genetics, ecology, physiology, evolution, lab skills, and pedagogy.

Sample Biology License (STT) Practice Questions

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

1Which organelle contains enzymes that break down worn-out organelles and cellular debris in eukaryotic cells?
A.Lysosome
B.Ribosome
C.Centriole
D.Nucleolus
Explanation: Lysosomes house hydrolytic enzymes for intracellular digestion and recycling of damaged components.
2Sodium-potassium pumps move ions against their concentration gradients using energy from:
A.ATP hydrolysis
B.Passive diffusion
C.Osmosis alone
D.Gravity
Explanation: The Na⁺/K⁺-ATPase is primary active transport that hydrolyzes ATP to pump three Na⁺ out and two K⁺ in.
3The fluid mosaic model describes the plasma membrane as a bilayer primarily composed of:
A.Phospholipids with embedded proteins
B.Cellulose fibers only
C.Peptidoglycan sheets
D.Silica crystals
Explanation: Membranes are phospholipid bilayers with proteins that move laterally, giving fluid mosaic structure.
4During which phase of mitosis do sister chromatids separate and move toward opposite poles?
A.Anaphase
B.Prophase
C.Metaphase
D.Telophase
Explanation: Anaphase begins when cohesin breaks and spindle fibers pull sister chromatids to opposite poles.
5Crossing over between homologous chromosomes occurs during:
A.Prophase I of meiosis
B.Anaphase II of meiosis
C.G1 of the cell cycle
D.Cytokinesis of mitosis
Explanation: Synapsis and crossing over in prophase I increase genetic variation in gametes.
6The light-dependent reactions of photosynthesis produce ATP and NADPH in the:
A.Thylakoid membranes
B.Stroma only
C.Mitochondrial matrix
D.Golgi cisternae
Explanation: Photosystems in thylakoid membranes capture light energy to drive photophosphorylation and NADPH formation.
7Most ATP from aerobic cellular respiration is generated during:
A.Oxidative phosphorylation in the inner mitochondrial membrane
B.Glycolysis in the cytoplasm
C.The Calvin cycle in chloroplasts
D.Fermentation in the nucleus
Explanation: The electron transport chain and chemiosmosis in mitochondria produce the bulk of ATP per glucose.
8An enzyme lowers activation energy primarily by:
A.Stabilizing the transition state of the substrate
B.Increasing the temperature of the cell
C.Destroying the substrate permanently
D.Changing the equilibrium constant of the reaction
Explanation: Enzymes bind substrates and stabilize transition states, speeding reactions without altering equilibrium.
9The G2/M checkpoint ensures that:
A.DNA is fully replicated and undamaged before mitosis
B.Sister chromatids have separated
C.The cell has entered G0 permanently
D.Crossing over is complete
Explanation: Before mitosis, cells verify replication completion and repair DNA damage at the G2/M checkpoint.
10Unlike typical eukaryotic cells, prokaryotic cells lack:
A.A membrane-bound nucleus
B.Ribosomes
C.DNA
D.A plasma membrane
Explanation: Prokaryotes have circular DNA in the nucleoid region without a nuclear envelope.

About the Biology License (STT) Exam

The Saudi Specialized Professional License Test in Biology is the ETEC/Qiyas subject-knowledge licensure examination for biology teachers seeking the professional teaching license. It measures specialized content knowledge across cell biology, genetics, ecology, physiology, evolution, microbiology, laboratory safety, and biology pedagogy aligned to Saudi secondary biology standards—distinct from the integrated general science STT and from separate chemistry or physics specialist licensure tests. This free practice bank offers 100 multiple-choice questions for STT preparation.

Assessment

Saudi professional licensure for biology teachers is administered by Qiyas under ETEC. Candidates generally must meet Ministry eligibility requirements and pass a general pedagogical MCQ test (GTT) plus a specialized biology subject-knowledge MCQ test (STT). Tests are computer-based multiple-choice exams registered through Qiyas e-services. This specialization is distinct from the integrated general science STT and from separate chemistry or physics specialist exams.

Time Limit

Commonly about two hours of answering time for Qiyas professional tests, plus early arrival for identity verification; confirm the duration shown for your registered session.

Passing Score

Older licensing documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component, with tiered license levels sometimes described at about 50, 70, and 80 out of 100. A single fixed public pass mark for the biology STT was not confirmed on the official pages reviewed for this bank. Verify the current standard in Qiyas e-services.

Exam Fee

Commonly reported at about 100 SAR per licensure test component, with higher fees sometimes cited for repeat attempts. Confirm the current fee in the Qiyas e-services portal before payment. (National Center for Assessment (Qiyas), under the Education and Training Evaluation Commission (ETEC))

Biology License (STT) Exam Content Outline

18%

Cell Biology

Organelles, membrane transport, mitosis and meiosis, enzymes, ATP, photosynthesis, respiration, and signal transduction.

16%

Genetics and Heredity

Mendelian genetics, DNA, replication, transcription, translation, mutations, pedigrees, and genetic engineering.

14%

Ecology and Environment

Food webs, biomes, population ecology, symbiosis, nutrient cycles, succession, and biodiversity.

14%

Physiology and Body Systems

Nervous, endocrine, circulatory, respiratory, digestive, excretory, immune systems, and homeostasis.

12%

Evolution and Classification

Natural selection, speciation, taxonomy, phylogeny, fossils, and genetic drift.

10%

Microbiology and Biochemistry

Bacteria, viruses, protists, fungi, fermentation, macromolecules, and biotechnology.

8%

Laboratory Safety and Skills

PPE, microscopy, aseptic technique, dissection safety, and field-work precautions.

8%

Biology Pedagogy and Assessment

Inquiry teaching, misconceptions, formative assessment, differentiation, and curriculum alignment.

How to Pass the Biology License (STT) Exam

What You Need to Know

  • Passing score: Older licensing documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component, with tiered license levels sometimes described at about 50, 70, and 80 out of 100. A single fixed public pass mark for the biology STT was not confirmed on the official pages reviewed for this bank. Verify the current standard in Qiyas e-services.
  • Assessment: Saudi professional licensure for biology teachers is administered by Qiyas under ETEC. Candidates generally must meet Ministry eligibility requirements and pass a general pedagogical MCQ test (GTT) plus a specialized biology subject-knowledge MCQ test (STT). Tests are computer-based multiple-choice exams registered through Qiyas e-services. This specialization is distinct from the integrated general science STT and from separate chemistry or physics specialist exams.
  • Time limit: Commonly about two hours of answering time for Qiyas professional tests, plus early arrival for identity verification; confirm the duration shown for your registered session.
  • Exam fee: Commonly reported at about 100 SAR per licensure test component, with higher fees sometimes cited for repeat attempts. Confirm the current fee in the Qiyas e-services portal before payment.

Keys to Passing

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

Biology License (STT) Study Tips from Top Performers

1Review Saudi secondary biology competencies—cell biology, genetics, ecology, physiology, evolution, and microbiology—then practise specialized MCQs under timed conditions separate from general science review.
2Do not neglect the separate general pedagogical licensure component (GTT) if your eligibility requires both tests; this bank practises only the biology STT specialization.
3Rebuild weak areas systematically: if you miss Hardy-Weinberg or nephron items, revisit those units before moving to ecology or pedagogy questions.
4Practise under timed conditions with roughly 1–2 minutes per item to match the pacing of Qiyas professional computerized tests.
5Connect content review to pedagogy and lab-safety items—know common student misconceptions (e.g., plants do not respire) and effective inquiry-based responses.

Frequently Asked Questions

Who needs the Saudi specialized biology professional license test?

The specialized biology licensure pathway targets teachers of biology in Saudi public schools who must meet ETEC/Qiyas professional license requirements alongside Ministry eligibility rules. Teachers of integrated general science may sit the separate science STT instead. Confirm your category in Qiyas e-services.

How is this different from the general science license test?

This biology STT emphasizes deep single-discipline content in cell biology, genetics, ecology, physiology, evolution, microbiology, and biology pedagogy. The general science STT tests integrated breadth across life, physical, and earth sciences at a shallower depth per discipline.

Is there only one test for the professional license?

No. Saudi teacher licensure commonly requires a general pedagogical multiple-choice test (GTT) plus a specialized subject-knowledge test (STT) in biology. This practice bank focuses on the biology specialization, not the separate general pedagogical component.

How many questions are on the live STT biology exam?

Public prep materials for specialized teacher tests often describe roughly 60–88 items in a timed computerized session. ETEC does not always publish one fixed count on the main pages reviewed for this bank. This free practice set has 100 biology-focused MCQs.

What is the passing score and exam fee?

Older documentation cited 50% on subject and pedagogical components; current prep sources often cite about 60% per component and about 100 SAR per test, with tiered license levels sometimes described at about 50, 70, and 80 out of 100. These figures were not confirmed as a single stable public table on the official Qiyas pages reviewed for this bank. Always verify current rules in Qiyas e-services before registering.