TEAS-style science practice: cram pack

Formula sheets, the key method steps for every topic and 8 practice problems, with full solutions at the back.

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1Formulas and methods

Biology for nursing entrance exams

Method

  1. Name the topic of the question: cell parts, transport, division, DNA and protein synthesis, inheritance, biomolecules, microorganisms or experimental design.
  2. Recall the key rule: A–T and G–C, diffusion from high to low, water moves towards more solute, mitosis keeps and meiosis halves the chromosome number.
  3. For crosses, write the parents’ genotypes, list the gametes and fill a Punnett square before counting.
  4. For experiments, label the independent, dependent and controlled variables, and ask whether the evidence supports or only suggests the conclusion.
  5. Check each option against the question asked, not just whether it is a true statement.

Chemistry for nursing entrance exams

Method

  1. Identify what is given and asked: particles, a formula, a state change, a concentration, a pH or a mass.
  2. Use the periodic table: the atomic number gives protons, the group gives valence electrons and the usual ion charge.
  3. Balance equations with coefficients only, element by element, oxygen and hydrogen last.
  4. For amounts, go mass → moles → mole ratio → moles → mass, and for solutions use M = mol/L and C₁V₁ = C₂V₂.
  5. Remember that pH is logarithmic: one unit is a factor of 10.

2Practice problems

1.Human anatomyMedium

Which carpal bone is most commonly fractured, typically after a fall on an outstretched hand?

  1. AScaphoid
  2. BHamate
  3. CLunate
  4. DPisiform
2.Human anatomyHard

A typical posterolateral disc herniation between L4 and L5 most often compresses which nerve root?

  1. AL4
  2. BL3
  3. CL5
  4. DS1
3.Human physiologyMedium

What is the main effect of aldosterone on the kidney?

  1. AIncreased filtration in the glomerulus
  2. BGlucose reabsorption in the proximal tubule
  3. CSodium reabsorption and potassium secretion in the distal nephron
  4. DWater reabsorption by inserting aquaporins only
4.Human physiologyHard

Why does a person with a high spinal cord injury above T1 risk low blood pressure?

  1. ARenin release from the kidney stops completely
  2. BThe sympathetic outflow to the vessels and heart is cut off
  3. CThe vagus nerve is cut, so the heart rate rises
  4. DThe phrenic nerve can no longer control the tone of the arteries
5.Biology for nursing entrance examsMedium

How does a scientific theory differ from a hypothesis?

  1. AA theory can never be changed by new data
  2. BA theory is a single experiment's result
  3. CIt is a broad explanation backed by much tested evidence
  4. DA theory is a guess that has not been tested yet
6.Biology for nursing entrance examsHard

Why does the body store long-term energy as fat rather than as glycogen?

  1. AFat dissolves easily in blood
  2. BFat is a type of protein
  3. CGlycogen cannot be broken down into glucose
  4. DFat holds more than twice the energy per gram
7.Chemistry for nursing entrance examsMedium

In the balanced equation __Mg + __HCl → __MgCl₂ + __H₂, what is the coefficient of HCl?

  1. A3
  2. B4
  3. C2
  4. D1
8.Chemistry for nursing entrance examsHard

How many grams of NaOH (molar mass 40 g/mol) are needed to make 500 mL of a 0.2 M solution?

  1. A4 g
  2. B40 g
  3. C0.1 g
  4. D8 g

3Solutions

1.Human anatomy

Answer: A · Scaphoid

Why this is the answer

The scaphoid is the most often fractured carpal bone. Tenderness in the anatomical snuffbox is a key clinical sign.

Answer

A · Scaphoid
2.Human anatomy

Answer: C · L5

Why this is the answer

A posterolateral L4–L5 herniation usually catches the traversing L5 root, causing weakness of big toe extension and numbness on the top of the foot.

Answer

C · L5
3.Human physiology

Answer: C · Sodium reabsorption and potassium secretion in the distal nephron

Why this is the answer

Aldosterone acts on the distal tubule and collecting duct to increase Na⁺ reabsorption and K⁺ secretion. Water follows the sodium, raising blood volume.

Answer

C · Sodium reabsorption and potassium secretion in the distal nephron
4.Human physiology

Answer: B · The sympathetic outflow to the vessels and heart is cut off

Why this is the answer

Sympathetic outflow leaves the cord at T1–L2. A lesion above it removes vasomotor tone and cardiac sympathetic drive while the vagus still works, causing hypotension and bradycardia (neurogenic shock).

Answer

B · The sympathetic outflow to the vessels and heart is cut off
5.Biology for nursing entrance exams

Answer: C · It is a broad explanation backed by much tested evidence

Why this is the answer

A theory explains a wide range of observations and has survived repeated testing. It can still be revised if strong new evidence appears.

Answer

C · It is a broad explanation backed by much tested evidence
6.Biology for nursing entrance exams

Answer: D · Fat holds more than twice the energy per gram

Why this is the answer

Lipids give about 9 kcal per gram, carbohydrates and proteins about 4 kcal per gram, so fat is a compact energy store.

Answer

D · Fat holds more than twice the energy per gram
7.Chemistry for nursing entrance exams

Answer: C · 2

Why this is the answer

MgCl₂ has 2 Cl, so 2HCl is needed, which also gives 2 H for H₂: Mg + 2HCl → MgCl₂ + H₂.

Answer

C · 2
8.Chemistry for nursing entrance exams

Answer: A · 4 g

Why this is the answer

n = 0.2 mol/L × 0.5 L = 0.1 mol; mass = 0.1 × 40 = 4 g. Using 500 instead of 0.5 L gives an answer 1000 times too large.

Answer

A · 4 g

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