Top 10 Most Missed Topics on the ATI TEAS Exam (Version 7)

1. Chemistry: Describe Chemical Reactions

Unit 3 Science, S.3.3 – Describe Chemical Reactions

Explain the role of valence electrons in chemical reactivity
Define covalent and ionic bonds
Identify reactants and products in a chemical reaction
Balance chemical reactions
Explain the mole concept in terms of quantities in chemical reactions

2. Anatomy: Male and Female Reproductive Systems

Unit 3 Science, S.1.7 – Describe the Anatomy and Physiology of the Male and Female Reproductive System

Identify structures of the reproductive system
Explain the functions of the reproductive system
Describe the relationship between the reproductive system and the endocrine system

3. Anatomy: Nervous System

Unit 3 Science, S.1.5 – Describe the Anatomy and Physiology of the Nervous System

Distinguish between the central and peripheral nervous system
Describe the structure of a neuron
Explain the functions of the nervous system

4. Math: Calculate Geometric Quantities

Unit 2 Math, M.2.4 – Calculate Geometric Quantities

Area, perimeter, and volume formulas
Geometric relationships and properties
Application of formulas in word problems

5. Math: Convert Within and Between Standard and Metric Systems

Unit 2 Math, M.2.5 – Convert within and between standard and metric systems

Convert within standard/customary/household systems (e.g., quarts to gallons, teaspoons to tablespoons)
Common metric-to-standard conversions (mL to L, mcg to mg, cm to m)
Given a conversion factor, convert between standard and metric systems (fluid oz to mL, lb to kg, Fahrenheit to Celsius).

6. Chemistry: Understand the Properties of Solutions

Unit 3 Science, S.3.5 – Understanding Properties of Solutions

Describe the polarity of water and its influence on water as a solvent
Distinguish between solvents and solutes
Explain concentration and the dilution of solutions
Describe osmosis and diffusion
Distinguish between passive and active transport mechanisms

7. English: Using Language and Vocabulary to Express Ideas in Writing

Unit 4 English and Language Usage, E.3.1 – Apply Basic Knowledge of the Elements of the Writing Process to Communicate Effectively

Identify steps to complete a writing task
Identify when a citation is needed
Effective use of vocabulary

8. Scientific Reasoning: Predict Relationships Among Events, Objects, and Processes

Unit 3 Science, S.4.3 – Predict Relationships Among Events, Objects, and Processes

Compare the magnitude (e.g., size) of events, objects and processes
Determine the casual relationship between events, (e.g., smoking and high blood pressure)
Determining the logical order or sequence of a series of events within a process

9. Biology: Describe the Role of Microorganisms in Disease

Unit 3 Science, S.2.5 – Describe the Role of Microorganisms in Disease

Define a microorganism
Distinguish between the main groups of pathogenic microbes (e.g., viruses, bacteria, protozoans, fungi, animals)
Distinguish between infectious and non-infectious disease
Identify the microbial causes of common infectious diseases
Identify types of microscopes and their uses

10. Anatomy: Endocrine System

Unit 3 Science, S.1.9 – Describe the Anatomy and Physiology of the Endocrine System

Identify structures and functions of the endocrine system
Describe the role of the endocrine system in homeostasis
Recognize examples of positive and negative feedback mechanisms
Describe the relationship between the endocrine system and the nervous system

Structure of the ATI TEAS Exam

The ATI TEAS exam consists of four content areas, assessing a student’s preparedness for nursing and allied health programs. The test includes 170 questions, with 150 scored and 20 unscored questions used for pre-testing validation. The total test time is 209 minutes. Each content area is timed separately.

Exam Breakdown: