Formula sheets, the key method steps for every topic and 16 practice problems, with full solutions at the back.
“After weeks of practice, Mei could finally play the whole piece without looking at the music.” What does “finally” suggest?
Train timetable: trains leave Oak Street at 6:10, 6:40, 7:10 and 7:40 a.m. The journey to Central takes 35 minutes. A nurse’s shift at Central Hospital starts at 7:30 a.m., and it is a 5-minute walk from the station. Which is the latest train she can take and still arrive on time?
The numbers of call-light requests on a unit over 7 nights were 13, 40, 2, 22, 18, 21, 40. What is the median m?
In a 15% off sale, a stethoscope costs $97.75. What was the original price x, in dollars?
Which cranial nerve supplies the lateral rectus muscle of the eye?
Which structure passes through the inguinal canal in males?
Which ABO blood group has both anti-A and anti-B antibodies in the plasma?
In Graves' disease, what thyroid function results are expected and why?
Why is water good at dissolving salts and sugars?
Why do antibiotics not cure viral infections such as the common cold?
How does electronegativity change going down a group?
Which 1-litre solution lowers the freezing point of water the most?
According to traditional formal usage, which phrase uses the adjective “unique” correctly?
Which phrase shows that Maria and Juan each have their own phone?
Choose the meaning of the word in bold: “The footballer had a large contusion on his thigh.”
Choose the word that best completes the sentence: “To stop the infection spreading, the patient was nursed in ___ in a single room.”
Answer: D · It took her a long time to succeed.
“Finally”, with “after weeks of practice”, shows that success came only after a long effort.
Answer: A · The 6:40 train
The 6:40 train arrives at 7:15, plus a 5-minute walk gives 7:20, in time. The 7:10 train would arrive at 7:45, plus 5 minutes is 7:50, too late.
Answer: m = 21
Mean, median, mode and range: the mean (average) is the sum divided by the number of values. The median is the middle value once the values are in order; with an even number of values it is the mean of the two middle ones. The mode is the value that occurs most often. The range is the largest value minus the smallest.
Answer: x = 115 $
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: C · Abducens nerve (VI)
The abducens nerve (VI) supplies lateral rectus. A lesion stops the eye moving outwards and causes horizontal double vision.
Answer: B · Spermatic cord
The inguinal canal carries the spermatic cord in males and the round ligament in females. The femoral vessels pass below the inguinal ligament instead.
Answer: D · Group O
Group O people have no A or B antigens and make both anti-A and anti-B. Group AB has both antigens and neither antibody.
Answer: D · High T4 and low TSH, because antibodies stimulate the TSH receptor
TSH-receptor antibodies stimulate the thyroid independently of TSH. The resulting high T4 and T3 suppress pituitary TSH by negative feedback.
Answer: D · Its molecules are polar
Water is polar: the oxygen side is slightly negative and the hydrogen side slightly positive. These charged ends surround ions and polar molecules and pull them into solution.
Answer: C · Viruses lack the cell walls, ribosomes and metabolism that antibiotics target
Antibiotics act on bacterial structures such as peptidoglycan walls and 70S ribosomes. Viruses have none of these, so antibiotics have nothing to act on.
Answer: C · It decreases
Going down a group, the outer electrons are farther from the nucleus and more shielded, so the atom attracts bonding electrons less strongly. Electronegativity decreases.
Answer: D · 1 M CaCl₂
Each CaCl₂ gives 3 ions (Ca²⁺ + 2Cl⁻), so 1 M CaCl₂ gives about 3 mol of particles. 1 M NaCl gives 2, 0.5 M NaCl gives 1 and 1 M glucose (which does not ionise) gives 1.
Answer: A · a unique design
Traditional usage treats “unique” as an absolute adjective: something either is one of a kind or is not, so it is not used with very, more or most.
Answer: B · Maria’s and Juan’s phones
When each person owns something separately, both names take ’s. B would suggest shared phones, and D misplaces the apostrophes.
Answer: B · A bruise
A contusion is a bruise caused by a blow that damages small blood vessels under the skin.
Answer: C · isolation
Isolation separates an infectious patient from others to prevent transmission.
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