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 cranial nerve supplies the lateral rectus muscle of the eye?
- AOptic nerve (II)
- BOculomotor nerve (III)
- CAbducens nerve (VI)
- DTrochlear nerve (IV)
2.Human anatomyHard
After axillary lymph node surgery, a patient's scapula sticks out from the chest wall when pushing against a wall. Which nerve has been damaged?
- ASuprascapular nerve
- BLong thoracic nerve
- CAxillary nerve
- DThoracodorsal nerve
3.Human physiologyMedium
What is the main stimulus for breathing in a healthy person?
- AA rise in blood glucose
- BA fall in arterial O₂
- CA fall in blood pH caused by lactate only
- DA rise in arterial CO₂
4.Human physiologyHard
In long-standing aortic stenosis, how does the left ventricle adapt?
- AConcentric hypertrophy with a thicker wall
- BNo change because the valve is not part of the ventricle
- CAtrophy of the muscle due to less work
- DThinning of the wall with dilation
5.Biology for nursing entrance examsMedium
Which is an example of negative feedback?
- ASweating when body temperature rises
- BA wound becoming more inflamed over time
- CBlood clotting speeding up once it starts
- DContractions growing stronger during labour
6.Biology for nursing entrance examsHard
Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?
- A1/8
- B1/16
- C1/64
- D3/64
7.Chemistry for nursing entrance examsMedium
On an energy diagram, the products are at a lower energy than the reactants. What kind of reaction is shown?
- AReversible only
- BNuclear
- CEndothermic
- DExothermic
8.Chemistry for nursing entrance examsHard
Gently heating DNA separates its two strands, but each strand stays in one piece. Why?
- AThe two strands are joined by ionic bonds that melt first
- BEach strand is held together by hydrogen bonds, while the two strands are joined by covalent bonds
- CThe strands are held together by weak hydrogen bonds, while each strand's backbone is covalent
- DHeat converts DNA into a protein
3Solutions
1.Human anatomy
Answer: C · Abducens nerve (VI)
Why this is the answer
The abducens nerve (VI) supplies lateral rectus. A lesion stops the eye moving outwards and causes horizontal double vision.
2.Human anatomy
Answer: B · Long thoracic nerve
Why this is the answer
The long thoracic nerve supplies serratus anterior, which holds the scapula against the chest wall. Damage causes a winged scapula.
3.Human physiology
Answer: D · A rise in arterial CO₂
Why this is the answer
Central chemoreceptors respond to CO₂ (through the pH of the cerebrospinal fluid). Low O₂ adds strongly to the drive only when PaO₂ falls well below normal, for example at high altitude.
D · A rise in arterial CO₂
4.Human physiology
Answer: A · Concentric hypertrophy with a thicker wall
Why this is the answer
Pressure overload makes the ventricular wall thicken (concentric hypertrophy) to keep wall stress normal. Volume overload, as in regurgitation, causes dilation instead.
A · Concentric hypertrophy with a thicker wall
5.Biology for nursing entrance exams
Answer: A · Sweating when body temperature rises
Why this is the answer
In negative feedback, a change triggers a response that brings the value back towards normal. Rising temperature causes sweating, which cools the body. Most homeostatic control works this way.
A · Sweating when body temperature rises
6.Biology for nursing entrance exams
Answer: C · 1/64
Why this is the answer
For each gene, Aa × Aa gives aa with a probability of 1/4. For three independent genes: 1/4 × 1/4 × 1/4 = 1/64.
7.Chemistry for nursing entrance exams
Answer: D · Exothermic
Why this is the answer
If the products have less energy than the reactants, the difference has been released to the surroundings. That is an exothermic reaction.
8.Chemistry for nursing entrance exams
Answer: C · The strands are held together by weak hydrogen bonds, while each strand's backbone is covalent
Why this is the answer
The bases pair across the two strands through hydrogen bonds, which are relatively weak and break on heating. The sugar–phosphate backbone of each strand is held by strong covalent bonds, which stay intact.
C · The strands are held together by weak hydrogen bonds, while each strand's backbone is covalent
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.