ATDH Exam Format | ATDH Course Contents | ATDH Course Outline | ATDH Exam Syllabus | ATDH Exam Objectives

Exam Code: ATDH
Exam Name: ADA ATDH Admission Test for Dental Hygiene

- Reading Comprehension
- Main Ideas: Determine the main ideas and supporting details in informational text, including identifying the primary concept, locating supporting evidence, summarizing key points, and distinguishing essential from non-essential information.
- Inferences and Conclusions: Make logical inferences and draw evidence-based conclusions from the text, such as interpreting the author’s viewpoint, purpose, or intent, evaluating whether statements are supported or contradicted by the passage, and using textual evidence to justify inferences.
- Relationships Among Ideas: Analyze how ideas connect and how the text is structured, including identifying comparisons and contrasts, categorizations, analogies, cause-effect relationships, overall text organization, paragraph-specific structures, and the role of transitional words or phrases in enhancing coherence.
- Meaning of Words and Phrases: Determine contextual meanings of words and phrases, encompassing literal, figurative, connotative, and technical interpretations within informational scientific texts, including understanding word choice effects on meaning and tone.

- Language Usage
- Spelling, Punctuation, and Capitalization: Identify and correct errors in spelling (including commonly confused words), punctuation (such as commas, semicolons, apostrophes), and capitalization rules in sentences and passages.
- Word Usage: Identify and correct inappropriate or incorrect word choices, including misuse of homophones, idioms, vocabulary in context, and ensuring precision and conciseness.
- Grammar: Detect and rectify grammatical errors, such as issues with subject-verb agreement, pronoun-antecedent agreement, verb tense consistency, proper case usage, and agreement in number or gender.
- Syntax: Identify and correct syntactic problems, including sentence fragments, run-on sentences, dangling or misplaced modifiers, lack of parallel structure in lists or comparisons, and faulty coordination or subordination.
- Organization of Ideas: Improve text organization for clarity and logical flow, such as combining sentences efficiently, selecting appropriate transitions, clarifying relationships between ideas, and revising awkward, convoluted, or ambiguous sentence constructions.
- Style and Tone: Maintain consistency in formal style and objective tone, including replacing informal or non-standard English, eliminating redundancy or wordiness, and ensuring appropriateness for professional or academic communication.

- Quantitative Reasoning
- Algebra: Solve problems involving linear and quadratic equations, expressions, inequalities, exponential notation, absolute values, ratios, proportions, percentages, and basic functions, including graphing and interpreting algebraic relationships.
- Probability and Statistics: Apply probabilistic reasoning to calculate simple, conditional, and compound probabilities; interpret or compute basic statistics such as means, medians, modes, ranges, standard deviations, and simple data distributions.
- Interpretation of Quantitative Information: Analyze and interpret data presented in various formats, including graphs (bar, line, pie), charts, tables, and diagrams, to extract meaningful insights, identify trends, or make comparisons.
- Word Problems: Formulate and solve real-world or applied problems by translating verbal descriptions into mathematical models using algebra, probability, statistics, or data interpretation techniques.

- Perceptual Ability
- Apertures: Evaluate whether a three-dimensional object can pass through a specific opening or aperture without distortion, assessing spatial fit and orientation.
- View Recognition: Visualize and identify how three-dimensional objects appear when viewed from different perspectives or orientations, matching views accurately.
- Angle Discrimination: Rank or differentiate a series of angles by relative size, identifying the smallest to largest or comparing magnitudes precisely.
- Paper Folding: Predict the pattern of holes or shapes when paper is folded multiple times and punched, then mentally unfolded to reveal the final appearance.
- Cube Counting: Analyze stacks or aggregations of cubes to count the number of exposed faces or painted surfaces on individual cubes within the structure.
- Spatial Relations / 3D Form Development: Identify the correct three-dimensional shape that results from folding a given two-dimensional flat pattern, assessing edge matching and form assembly.

- Biology
- Cell and Molecular Biology: Understand cell structure, organelles, membranes, metabolism, cellular processes (mitosis, meiosis, transport), biomolecules (carbohydrates, lipids, proteins, nucleic acids), and basic molecular concepts including DNA replication, transcription, and protein synthesis.
- Diversity of Life: Biological Organization and Relationship: Classify organisms into major kingdoms (Plantae, Animalia, Protista, Fungi, Eubacteria, Archaea), understand characteristics of viruses, and relationships in biological hierarchy from molecules to ecosystems.
- Structure and Function: Describe anatomy and physiology of major systems (circulatory, respiratory, digestive, nervous, musculoskeletal, immune), emphasizing homeostasis, nutrient processing, gas exchange, movement, and human-specific functions.
- Genetics: Apply principles of Mendelian inheritance, molecular genetics (gene expression, mutations), human genetics (pedigrees, disorders), and mechanisms of inheritance patterns.
- Evolution and Ecology: Explain natural selection, speciation, evolutionary mechanisms, ecological interactions (energy flow, nutrient cycles), populations, communities, and environmental impacts on organisms.

- General Chemistry
- Stoichiometry and General Concepts: Perform calculations involving percent composition, empirical and molecular formulas, balancing equations, moles, molar mass, density, limiting reactants, yields, chemical nomenclature, and oxidation-reduction reactions, including periodic trends.
- Gases: Apply gas laws (Boyle’s, Charles’s, Dalton’s, ideal gas law), kinetic molecular theory, and calculations involving pressure, volume, temperature, and partial pressures.
- Liquids and Solids: Understand intermolecular forces, phase changes, vapor pressure, polarity, and properties of liquids and solids.
- Solutions: Calculate concentrations (molarity, molality), understand colligative properties, solubility, and effects of intermolecular forces on solution behavior.
- Acids and Bases: Determine pH, identify acid-base strength, apply Brønsted-Lowry theory, perform titration calculations, and understand buffers.
- Kinetics, Thermodynamics, Equilibria: Apply Le Chatelier’s principle, laws of thermodynamics, calculate enthalpies, entropies, free energy, reaction rates, activation energy, and equilibrium constants.
- Atomic and Molecular Structure: Describe electron configurations, Lewis structures, molecular geometry (VSEPR), bond types (ionic, covalent, metallic), subatomic particles, and quantum numbers.
- Nuclear Reactions: Balance nuclear equations, understand decay processes (alpha, beta, gamma), half-life, and related terminology.
- Laboratory: Recognize basic techniques, equipment usage, error analysis, safety protocols, and data interpretation in experimental contexts.