Free Practice Questions for STS Eczacılık

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Sample STS Eczacılık Practice Questions

Try these sample questions to review concepts for the STS Eczacılık exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 38+ question experience with AI tutoring.

1A cephalosporin synthesis discussion identifies 7-aminocephalosporanic acid as a core intermediate. Which antibiotic class uses this cephem nucleus?

A.Penicillins

B.Tetracyclines

C.Cephalosporins

D.Macrolides

Explanation: The 7-aminocephalosporanic acid nucleus is associated with cephalosporin chemistry. Penicillins instead have the related but distinct penam nucleus.

2Aspirin transfers an acetyl group to cyclooxygenase. Which description best distinguishes this action from ordinary reversible competition?

A.Covalent enzyme modification

B.Chelation of calcium in plasma

C.Competitive occupation without chemical modification

D.Activation of prostaglandin receptors

Explanation: Aspirin acetylates cyclooxygenase, producing covalent modification. Recovery therefore differs from simply removing a freely reversible competitive inhibitor.

3An active compound's polar carboxyl group is temporarily masked as an ester. Which experiment most directly tests whether the candidate works as a prodrug?

A.Aqueous-solubility measurement alone

B.Melting-point measurement alone

C.Membrane-partition measurement without metabolite analysis

D.Demonstration of conversion to the active compound in a relevant biological system

Explanation: A prodrug strategy depends on conversion to an active species in the intended biological setting. Improved physical properties alone do not demonstrate successful bioactivation.

4For a weak base, pH = pKa + log10(unprotonated/protonated). At pH 7 with pKa 9, what fraction is approximately unprotonated?

A.99%

B.1%

C.50%

D.10%

Explanation: The unprotonated-to-protonated ratio is 10⁻², or 1:100. The unprotonated fraction is 1/101, approximately 1%.

5A hydroxylated drug is converted to its glucuronide. Which type of biotransformation is this?

A.Phase I oxidation

B.Phase I reduction

C.Phase II conjugation

D.Ester hydrolysis

Explanation: Glucuronidation is a conjugation reaction commonly classified as phase II metabolism. Increased polarity often facilitates elimination, but does not guarantee that every conjugate is inactive or nontoxic.

6Two drug molecules are mirror images that cannot be superimposed. Which evidence is insufficient by itself to show that they are therapeutically interchangeable?

A.Identical molecular formula and achiral mass spectrum

B.Comparative exposure measurements

C.Comparative target-interaction data

D.Appropriate clinical safety and efficacy evidence

Explanation: Enantiomers share a molecular formula and can have indistinguishable behavior in achiral measurements. Biological systems are chiral, so therapeutic interchangeability needs evidence beyond those shared properties.

7The herbal drug Aloes folii succus siccatus refers to which preparation?

A.Aloe seed oil

B.Powdered aloe roots

C.Isolated inner-leaf gel alone

D.Dried aloe leaf juice

Explanation: The EMA herbal identity refers to dried juice from aloe leaves. This should not be treated as interchangeable with every aloe gel or cosmetic preparation.

8A botanical extract meets a marker-compound assay but fails the expected chromatographic fingerprint. Which quality concern remains?

A.The marker result proves complete botanical identity

B.Substitution or an abnormal constituent profile remains possible

C.The fingerprint is necessarily irrelevant

D.A marker assay proves absence of all contaminants

Explanation: One marker concentration does not establish the entire identity or composition of a complex extract. Fingerprinting and other quality tests can identify discrepancies missed by a single assay.

9A volatile aromatic fraction is obtained from fresh flowering peppermint aerial parts by steam distillation. Which product best fits?

A.Peppermint oil

B.Fixed seed oil

C.Aqueous mucilage

D.Starch granules

Explanation: Peppermint essential oil is obtained by steam distillation of appropriate aerial plant material. Essential oils differ from nonvolatile fixed oils and polysaccharide-rich preparations.

10A patient wants to use ispaghula husk but has difficulty swallowing and cannot take adequate fluid. What is the principal formulation-related concern?

A.Systemic accumulation after complete intestinal absorption

B.Chemical burning from a strongly acidic solution

C.Swelling material may cause obstruction when used inappropriately

D.An obligatory stimulant effect causing immediate hypokalemia

Explanation: Ispaghula husk swells with water and requires appropriate administration conditions. Swallowing problems or inadequate fluid intake warrant review rather than routine unsupervised use.

About the STS Eczacılık Exam

Independent practice for pharmacy diploma-equivalence topics. This English-language MCQ study adaptation is not an official translation or examination simulation and does not replace practical skills, internship experience, or Turkish professional-language study.

Exam sponsor: ÖSYM; equivalence decisions by YÖK. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

One on-site electronic knowledge examination in Ankara. The test itself has no specified oral, practical, assignment, or separately assessed case-study component. Required deficient coursework and internships belong to YÖK's wider equivalence process.

Time Limit

110 minutes

Passing Score

40/100 after the wrong-answer deduction

Exam / Certification Fees

TRY 2,500 standard 2026 fee; late applications cost 50% more

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

ÖSYM 2026 pharmacy STS guide, including Table 1 and equivalence conditions · Source checked 2026-10-21
ÖSYM published Turkish EUS and pharmacy STS materials · Source checked 2026-10-21Language evidence; current structure is taken from the 2026 guide.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

18 of 38 study questions

Chemistry, pharmacognosy, and technology

Six per field, chosen as an independent study allocation rather than a published STS weighting.

12 of 38 study questions

Analysis, pharmacology, clinical pharmacy, and toxicology

Three per field, including calculations and safety interpretation.

8 of 38 study questions

Supporting fields

Physiology/pathology and biochemistry two each; microbiology/immunology, medical biology, law/ethics, and public health one each.

Preparing for the STS Eczacılık Exam

What You Need to Know

Passing score: 40/100 after the wrong-answer deduction
Assessment: One on-site electronic knowledge examination in Ankara. The test itself has no specified oral, practical, assignment, or separately assessed case-study component. Required deficient coursework and internships belong to YÖK's wider equivalence process.
Time limit: 110 minutes
Exam / certification fees: TRY 2,500 standard 2026 fee; late applications cost 50% more Official sources

Using Our Practice Resources

Work through all 38 available questions
Review every answer and explanation
Track weak areas and revisit them
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STS Eczacılık: Suggested Study Strategy

1Use your YÖK file and the current STS guide to identify remaining requirements.

2Review all thirteen fields beyond this small study sample.

3Confirm local product instructions and current Turkish law when studying clinical and legal applications.

Frequently Asked Questions

Are the subject weights the same as EUS?

The 2026 STS table lists thirteen fields but does not publish their numerical weights. This bank's allocation must not be read as an official STS weighting.

What remains after passing?

The guide requires any deficient courses and internship training to be completed, along with other YÖK equivalence conditions.