Difficulty is personal, but one TEAS section comes up again and again as the toughest: Science. Knowing why tells you where to spend your study time first.
Science is the section most applicants name as hardest, and it is also the longest at 50 questions. The difficulty is breadth, not trickery: roughly a third of the section is human anatomy and physiology — every major organ system and how they work together — and the rest spans life science, physical science, and scientific reasoning. There is simply a lot to hold in memory. A systems-level map of the body, built so you can describe what each system does and how it connects to the others, beats memorising isolated structures and is usually what the questions reward.
Because A&P is the biggest slice of the biggest section, it is the single highest-value thing to study. Focus on the respiratory, cardiovascular, digestive, nervous, and musculoskeletal systems first: their main structures, their jobs, and the way they depend on each other. Understanding the flow — how oxygen, blood, nutrients, and signals move through the body — carries you further than rote lists.
Math is the next most commonly cited, not because the arithmetic is advanced but because it is applied and timed. Expect ratios, proportions, unit conversions, and dosage-style word problems that test whether you can set up the right calculation quickly. A calculator is provided, so the bottleneck is reading the problem and choosing the method — drill the setups until they are automatic.
Diagnose first: take a short mixed set and see where you lose the most points. Put the bulk of your time into Science — and within it, anatomy and physiology — because it is the longest section and the most feared. Keep Math warm under a timer so pace stops being a surprise, and give Reading and English lighter, steady review.
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1. What is the primary function of red blood cells?
Answer: A. Red blood cells contain hemoglobin, which binds and transports oxygen to tissues. Fighting infection and producing antibodies are roles of white blood cells; clotting involves platelets.
2. Evaluate: 24 - 6 × (8 - 5) + 2
Answer: C. Using order of operations: 8 - 5 = 3, then 6 × 3 = 18, then 24 - 18 + 2 = 8.
3. Read the passage: "Regular physical activity strengthens the heart, improves circulation, and helps the body regulate blood sugar. Even a brisk daily walk can lower the risk of several chronic diseases." Which statement best expresses the main idea?
Answer: A. The passage lists several benefits of physical activity, so the main idea is that it provides broad health benefits. The other choices overstate, contradict, or are unsupported by the text.
4. Choose the sentence with correct subject-verb agreement.
Answer: C. The subject is 'list' (singular); 'of supplies' is a prepositional phrase that does not change the verb. The singular verb 'is' agrees with 'list.'
Nice work. Practise every section →
Most applicants say Science, which is also the longest section at 50 questions. The challenge is breadth — human anatomy and physiology make up roughly a third of it, with the rest spanning life science, physical science, and scientific reasoning.
A&P is the largest single part of the Science section — about a third of its questions — which is why it is usually the highest-value area to study first.
The arithmetic is basic and a calculator is provided, but the section is timed and the problems are applied (ratios, conversions, dosage-style setups). The difficulty is speed and setup, which practice fixes.
Take a short diagnostic, then put most of your time into Science — anatomy and physiology first — since it is the longest, most-feared section. Practise Math under a timer and keep Reading and English on lighter review.