Formula sheets, the key method steps for every topic and 16 practice problems, with full solutions at the back.
“Mary Seacole was a Jamaican-born nurse who travelled to the Crimean War at her own expense. There she ran a hotel near the battlefield where she cared for sick and injured soldiers.” What does “at her own expense” mean?
“In one study, people who were told a pill would ease their pain reported less pain, even though the pill contained no medicine.” What does this study illustrate?
Solve for x: 7 − 8x = 15.
In a 30% off sale, a stethoscope costs $14. What was the original price x, in dollars?
Which muscle group on the front of the thigh extends the knee?
A pituitary tumour grows upwards and causes loss of both outer (temporal) halves of the visual field. Where is the visual pathway compressed?
The hormone secretin is released when acid enters the duodenum. What is its main effect?
A healthy person stands up quickly after lying down. Which reflex response prevents fainting?
What gives the rough endoplasmic reticulum its "rough" look?
A light microscope has a 10× eyepiece and a 40× objective lens. What is the total magnification?
In the reaction Zn + Cu²⁺ → Zn²⁺ + Cu, which species loses electrons?
Which substance has the lowest boiling point?
Which spelling is correct for the adverb form of “true”?
Choose the correct verb for formal (especially American) English: “The policy requires that every visitor ___ a mask.”
Choose the meaning of the word in bold: “The patient was intubated in the emergency department.”
What does the term thrombocytopenia mean?
Answer: B · She paid the costs of the trip herself.
“At her own expense” means she paid the costs herself rather than being funded by someone else.
Answer: B · Expectations can affect how people report symptoms.
The pill had no medicine, yet people reported less pain. This shows the placebo effect: expectations can influence reported symptoms.
Answer: x = −1
Solving equations: do the same thing to both sides until x stands alone. Undo operations in reverse order: first undo addition or subtraction, then multiplication or division. Clear parentheses with the distributive property, a(x + b) = ax + ab, and collect the x terms on one side. Check the answer by substituting it back.
Answer: x = 20 $
Reverse percentages: when a value has already been increased or decreased by a percent, the new value is a percent of the original, not the other way round. After a 20% discount the price is 80% of the original, so original = new price ÷ 0.80. Never add the 20% back on to the new price.
Answer: A · Quadriceps femoris
Quadriceps femoris (rectus femoris and three vasti) extends the knee through the patellar ligament. The hamstrings flex it.
Answer: A · Optic chiasm
Bitemporal hemianopia results from compression of the crossing nasal fibres at the optic chiasm, which lies directly above the pituitary gland.
Answer: C · Bicarbonate secretion from the pancreas
Secretin stimulates pancreatic duct cells to secrete bicarbonate-rich fluid, which neutralises acidic chyme so intestinal enzymes can work.
Answer: B · The baroreceptor reflex raises heart rate and vasoconstriction
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.
Answer: A · Ribosomes attached to its surface
Ribosomes on the rough ER make proteins that enter the ER for folding and transport. The smooth ER has no ribosomes and makes lipids.
Answer: B · 400×
Total magnification = eyepiece × objective = 10 × 40 = 400×.
Answer: B · Zn
Zinc goes from 0 to +2, so it loses two electrons and is oxidised. Cu²⁺ gains those electrons and is reduced to copper metal.
Answer: B · Helium
Helium atoms are tiny and attract each other only by very weak dispersion forces, so helium boils near −269 °C. Water has hydrogen bonds, while NaCl and iron have strong ionic and metallic bonds.
Answer: C · truly
“Truly” drops the e of “true” before -ly. Most words keep the e (sincerely, lovely), so it is a common spelling exception.
Answer: A · wear
The subjunctive uses the base form of the verb, even with a singular subject: “that every visitor wear”. British English often uses “should wear” instead, but US-style exams expect the subjunctive.
Answer: A · Had a breathing tube placed in the trachea
To intubate is to insert a tube, usually an endotracheal tube into the trachea, to support breathing.
Answer: C · A low number of platelets
Thrombocytopenia is a deficiency of platelets (thrombocytes), which raises the risk of bleeding.
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