1Formulas and methods
Biology for nursing entrance exams
Method
- Name the topic of the question: cell parts, transport, division, DNA and protein synthesis, inheritance, biomolecules, microorganisms or experimental design.
- 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.
- For crosses, write the parents’ genotypes, list the gametes and fill a Punnett square before counting.
- For experiments, label the independent, dependent and controlled variables, and ask whether the evidence supports or only suggests the conclusion.
- Check each option against the question asked, not just whether it is a true statement.
Chemistry for nursing entrance exams
Method
- Identify what is given and asked: particles, a formula, a state change, a concentration, a pH or a mass.
- Use the periodic table: the atomic number gives protons, the group gives valence electrons and the usual ion charge.
- Balance equations with coefficients only, element by element, oxygen and hydrogen last.
- For amounts, go mass → moles → mole ratio → moles → mass, and for solutions use M = mol/L and C₁V₁ = C₂V₂.
- Remember that pH is logarithmic: one unit is a factor of 10.
2Practice problems
1.Human anatomyMedium
Which two regions of the adult spine normally show a lordosis (curve concave towards the back)?
- AThoracic and lumbar
- BThoracic and sacral
- CCervical and thoracic
- DCervical and lumbar
2.Human anatomyHard
Injury to the common fibular (peroneal) nerve at the neck of the fibula typically causes:
- AWeak hip abduction
- BFoot drop
- CInability to flex the knee
- DLoss of sensation on the sole of the foot
3.Human physiologyMedium
What is anatomical dead space?
- AAlveoli that have collapsed completely
- BThe air that stays in the lungs after full exhalation (residual volume)
- CThe volume of the conducting airways where no gas exchange happens
- DThe space between the two pleural layers
4.Human physiologyHard
A healthy person stands up quickly after lying down. Which reflex response prevents fainting?
- AThe baroreceptor reflex raises heart rate and vasoconstriction
- BThe Bainbridge reflex lowers heart rate
- CADH release immediately doubles blood volume
- DThe chemoreceptor reflex raises breathing rate and arterial oxygen levels
5.Biology for nursing entrance examsMedium
A person with blood type AB has both A and B antigens on the red cells. What kind of inheritance is this?
- AComplete dominance of A over B
- BSex-linked inheritance
- CIncomplete dominance
- DCodominance
6.Biology for nursing entrance examsHard
Two parents are both carriers of cystic fibrosis, an autosomal recessive disorder. They have three children. What is the probability that none of the three is affected?
- A27/64
- B9/16
- C3/4
- D1/64
7.Chemistry for nursing entrance examsMedium
What are isomers?
- ACompounds with the same molecular formula but different structures
- BMolecules that contain the same number of bonds
- CAtoms of the same element with different numbers of neutrons
- DCompounds with the same structure but different molecular formulas
8.Chemistry for nursing entrance examsHard
A gas occupies 4 L at 2 atm and 200 K. What is its volume at 1 atm and 400 K?
- A4 L
- B16 L
- C8 L
- D1 L
3Solutions
1.Human anatomy
Answer: D · Cervical and lumbar
Why this is the answer
The cervical and lumbar regions are lordotic (secondary curves). The thoracic and sacral regions are kyphotic (primary curves).
2.Human anatomy
Answer: B · Foot drop
Why this is the answer
The common fibular nerve supplies the dorsiflexors and evertors. Damage at the fibular neck causes foot drop and a high-stepping gait. The sole is supplied by the tibial nerve.
3.Human physiology
Answer: C · The volume of the conducting airways where no gas exchange happens
Why this is the answer
Anatomical dead space (about 150 ml) is air in the nose, trachea and bronchi. It is moved with every breath but never reaches the alveoli.
C · The volume of the conducting airways where no gas exchange happens
4.Human physiology
Answer: A · The baroreceptor reflex raises heart rate and vasoconstriction
Why this is the answer
Blood pools in the legs and pressure falls; baroreceptors fire less, which increases sympathetic and decreases vagal activity within seconds, raising heart rate and vascular tone.
A · The baroreceptor reflex raises heart rate and vasoconstriction
5.Biology for nursing entrance exams
Answer: D · Codominance
Why this is the answer
The Iᴬ and Iᴮ alleles are codominant: neither masks the other, and both antigens appear. The O allele (i) is recessive to both.
6.Biology for nursing entrance exams
Answer: A · 27/64
Why this is the answer
For each child, P(unaffected) = 3/4. For three independent children, multiply: 3/4 × 3/4 × 3/4 = 27/64, about 42%.
7.Chemistry for nursing entrance exams
Answer: A · Compounds with the same molecular formula but different structures
Why this is the answer
Isomers have the same number and type of atoms arranged differently, which gives them different properties. Glucose and fructose are isomers. Isotopes are about neutrons, not structure.
A · Compounds with the same molecular formula but different structures
8.Chemistry for nursing entrance exams
Answer: B · 16 L
Why this is the answer
V₂ = P₁V₁T₂ ÷ (T₁P₂) = (2 × 4 × 400) ÷ (200 × 1) = 16 L. Halving the pressure doubles the volume, and doubling the temperature doubles it again.
This is independent practice material. ExamProblems is not affiliated with or endorsed by the organisation that runs this exam, and the exam name is used only to describe the content. ATI TEAS is a trademark of Assessment Technologies Institute, LLC (ATI), which is not affiliated with ExamProblems and does not endorse it or vouch for its accuracy.