Practise scientific mechanisms, reaction choices, passage analysis and quantitative decisions with 60 focused OAT concepts, worked applications and original drills. These are independent learning materials, not official exam questions or a pass prediction.
Read the Optometry Admission Test (OAT): Free Preparation Guide study guide and official exam sourcesExam outline and official sources
Association of Schools and Colleges of Optometry (ASCO), governing body; American Dental Association Department of Testing Services (DTS), implementing body · 2026 OAT Candidate Guide, revised August 6, 2026, with organic chemistry specifications implemented June 2026 as confirmed by the September 23, 2026 issuer update. The workbook label 'Occupational Therapy Admission Test (OAT)' is inaccurate; the evidenced mapping is to the Optometry Admission Test. The assigned slug is preserved.
This original 20-question sample covers selected topics across the outline. It does not reproduce official exam questions or cover every tested topic.
- Official Optometry Admission Test website
- 2026 OAT Candidate Guide, updated December 15, 2025
- 2026 OAT Candidate Guide, updated August 6, 2026
- OAT New Organic Chemistry Examination Specifications
- DTS Recent and Forthcoming Updates to Examinations, September 23, 2026
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Optometry Admission Test (OAT)
Start with 20 free questions, then review the explanations and any topics you missed.
A neutral solute enters cells through a specific carrier. Uptake occurs only down its concentration gradient, continues without direct ATP use, and reaches a maximum as solute concentration increases. Which mechanism best explains these findings?
Optometry Admission Test (OAT)
Flashcards
Survey of the Natural Sciences
Biology: membrane transport
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