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 pulse is felt just behind the medial malleolus of the ankle?
- APosterior tibial artery
- BPopliteal artery
- CDorsalis pedis artery
- DFibular artery
2.Human anatomyHard
A blow to the side of the head at the pterion causes an extradural haematoma. Which vessel is usually torn?
- ASuperficial temporal artery
- BMiddle meningeal artery
- CMiddle cerebral artery
- DBridging cerebral veins
3.Human physiologyMedium
According to Poiseuille's law, if the radius of an arteriole halves, its resistance to flow:
- AIncreases about 16-fold
- BHalves
- CDoubles
- DIncreases 4-fold
4.Human physiologyHard
Which transporter in the thick ascending limb of the loop of Henle is key to building the medullary concentration gradient?
- AThe epithelial sodium channel (ENaC)
- BAquaporin-2 water channels
- CThe Na⁺–K⁺–2Cl⁻ cotransporter (NKCC2)
- DThe sodium–glucose cotransporter (SGLT2)
5.Biology for nursing entrance examsMedium
Which of these is part of the body's innate (non-specific) defence?
- AThe skin and stomach acid
- BAntibodies made after vaccination
- CT cells that recognise one virus
- DMemory B cells from an earlier infection
6.Biology for nursing entrance examsHard
An Rh-negative mother gives birth to an Rh-positive baby. Why could a later Rh-positive pregnancy be at risk?
- AThe first baby's antibodies remain in her blood and attack her
- BShe may have made anti-D antibodies that cross the placenta
- CThe second baby will be unable to make any red cells
- DHer red cells may become Rh positive after the birth
7.Chemistry for nursing entrance examsMedium
0.5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?
- A0.5 M
- B125 M
- C2 M
- D0.125 M
8.Chemistry for nursing entrance examsHard
What is the molar mass of glucose, C₆H₁₂O₆ (C = 12, H = 1, O = 16 g/mol)?
- A168 g/mol
- B180 g/mol
- C29 g/mol
- D96 g/mol
3Solutions
1.Human anatomy
Answer: A · Posterior tibial artery
Why this is the answer
The posterior tibial artery passes behind the medial malleolus into the sole. The dorsalis pedis pulse is felt on the top of the foot.
A · Posterior tibial artery
2.Human anatomy
Answer: B · Middle meningeal artery
Why this is the answer
The middle meningeal artery lies under the pterion, where the skull is thin. Its rupture bleeds between bone and dura. Bridging veins cause subdural haematomas.
B · Middle meningeal artery
3.Human physiology
Answer: A · Increases about 16-fold
Why this is the answer
Resistance is proportional to 1/r⁴, so halving the radius raises resistance by 2⁴ = 16. This is why small changes in arteriole diameter control blood flow so strongly.
A · Increases about 16-fold
4.Human physiology
Answer: C · The Na⁺–K⁺–2Cl⁻ cotransporter (NKCC2)
Why this is the answer
NKCC2 moves Na⁺, K⁺ and Cl⁻ out of the tubule into the interstitium without water, building the medullary gradient. Loop diuretics such as furosemide block it.
C · The Na⁺–K⁺–2Cl⁻ cotransporter (NKCC2)
5.Biology for nursing entrance exams
Answer: A · The skin and stomach acid
Why this is the answer
Innate defences include physical and chemical barriers such as skin, mucus and stomach acid, plus phagocytes and inflammation. Antibodies, memory cells and specific T cells belong to adaptive immunity.
A · The skin and stomach acid
6.Biology for nursing entrance exams
Answer: B · She may have made anti-D antibodies that cross the placenta
Why this is the answer
Exposure to the baby's RhD-positive cells can sensitise the mother, so she makes anti-D antibodies. In a later pregnancy these can cross the placenta and destroy the baby's red cells (haemolytic disease of the newborn). Anti-D immunoglobulin is given to prevent sensitisation.
B · She may have made anti-D antibodies that cross the placenta
7.Chemistry for nursing entrance exams
Answer: C · 2 M
Why this is the answer
250 mL = 0.250 L. M = mol ÷ L = 0.5 ÷ 0.250 = 2 M. Dividing by 250 without converting would give a wrong answer.
8.Chemistry for nursing entrance exams
Answer: B · 180 g/mol
Why this is the answer
6 × 12 + 12 × 1 + 6 × 16 = 72 + 12 + 96 = 180 g/mol.
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.