Formula sheets, the key method steps for every topic and 16 practice problems, with full solutions at the back.
“The old lighthouse keeper climbed the 120 steps every evening to light the lamp, even when his knees ached, because ships depended on him.” What motivates the lighthouse keeper?
The author writes: “The new reading programme was introduced in September. By June, reading scores had risen. The programme clearly works.” Which further information would best test the author’s claim?
Which fraction or mixed number in lowest terms equals the decimal 0.086? Click it.
A cylinder has a radius of 10 ft and a height of 7 ft. Using π ≈ 3.14, find its volume V.
Which vessels carry oxygenated blood from the lungs to the heart?
After an injury at the medial epicondyle of the elbow, a patient has numbness of the little finger and weakness of finger abduction. Which nerve is affected?
During which phase of the cardiac cycle are all four heart valves closed while ventricular pressure rises?
Which adaptation develops over days to weeks at high altitude?
During childbirth, pressure on the cervix causes oxytocin release, which causes stronger contractions and more pressure. What kind of control is this?
Five recovery times in days are 5, 6, 6, 7 and 30. Which value best describes a typical recovery time, and why?
Which list is in order from smallest to largest mass?
What volume of a 6 M stock solution is needed to make 300 mL of a 2 M solution?
Which choice is a sentence fragment?
Which choice combines the sentences most concisely? “Dr. Chen is a cardiologist. She will speak at the conference.”
Choose the meaning of the word in bold: “Infection is an inherent risk of any surgery.”
Choose the meaning of the word in bold: “The patient reported hallucinations during the night.”
Answer: A · A sense of duty to the ships
He climbs despite pain “because ships depended on him”, which shows a strong sense of responsibility or duty.
Answer: C · Scores from similar schools without it
Scores usually rise over a school year. Comparing with similar schools that did not use the programme shows whether it made a real difference.
Answer: 43/500
Fractions, decimals and percents are three ways to write the same number. Fraction → decimal: divide the numerator by the denominator. Decimal → percent: multiply by 100 (move the point two places right). Percent → decimal: divide by 100. Decimal → fraction: write the digits over 10, 100 or 1000 (one zero per decimal place) and simplify.
Answer: V = 2198 ft³
Perimeter, area and volume: the perimeter is the distance around a shape (rectangle: 2l + 2w). Area is measured in square units: rectangle l × w, triangle ½ × base × height, circle π·r². The circumference of a circle is π·d = 2π·r. Volume is in cubic units: box l × w × h, cylinder π·r²·h. Use the value of π the question gives.
Answer: A · Pulmonary veins
Four pulmonary veins drain oxygenated blood into the left atrium. They are the main exception to the rule that veins carry deoxygenated blood.
Answer: A · Ulnar nerve
The ulnar nerve passes behind the medial epicondyle. It supplies most intrinsic hand muscles, including the interossei, and the skin of the little finger.
Answer: A · Isovolumetric contraction
After the AV valves close, the ventricles contract against closed semilunar valves. Pressure rises with no volume change until the aortic and pulmonary valves open.
Answer: D · Higher erythropoietin levels and more red blood cells
Hypoxia stimulates EPO and red cell production, raising oxygen-carrying capacity. Hyperventilation causes alkalosis, which the kidneys compensate by excreting bicarbonate.
Answer: C · Positive feedback
In positive feedback the response increases the original stimulus, so the change builds up until an endpoint, here the birth of the baby. Negative feedback would reduce the change instead.
Answer: A · The median of 6, because the outlier pulls the mean up
The mean is (5 + 6 + 6 + 7 + 30) ÷ 5 = 10.8, which is higher than four of the five values because of the outlier. The median, 6, is less affected and better shows the typical value.
Answer: C · Milligram, gram, kilogram
1 mg = 0.001 g and 1 kg = 1000 g, so mg < g < kg. Each step is a factor of 1000.
Answer: C · 100 mL
V₁ = 2 × 300/6 = 100 mL of stock, made up to 300 mL with water.
Answer: D · Running down the hall to answer the call light.
A has no subject and only an -ing form, so it is a fragment. C is a complete imperative sentence with the understood subject “you”.
Answer: D · Dr. Chen, a cardiologist, will speak at the conference.
The appositive “a cardiologist” renames Dr. Chen and removes repetition. B is wordy, C changes the meaning and D is a comma splice.
Answer: B · Built-in
Inherent means existing as a natural, permanent part of something.
Answer: C · Seeing or hearing things that are not there
Hallucinations are perceptions without a real stimulus; fixed false beliefs are called delusions.
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