Formula sheets, the key method steps for every topic and 16 practice problems, with full solutions at the back.
“The council says the new bike path will reduce traffic. Local shop owners worry that losing parking spaces will mean fewer customers.” What is the main purpose of the passage?
The author writes: “Some claim that video games make children violent. Yet violent crime among young people has fallen in many countries during the same years that video games became popular.” What is the author trying to show?
The line graph shows the number of people in a waiting room every 2 hours, from hour 0 to hour 10. By how much Δ did the value change from hour 6 to hour 10? Use a negative number for a decrease.
Work out 2 1/3 ÷ 1 1/2. Click the answer in lowest terms.
Which muscle is the main extensor of the elbow?
Injury to the common fibular (peroneal) nerve at the neck of the fibula typically causes:
Why can cardiac muscle not be tetanised like skeletal muscle?
Why does left ventricular failure cause pulmonary oedema?
Which list puts these human energy sources in order from fastest to use to longest-lasting store?
A pesticide that is not broken down is sprayed on crops. Later, hawks at the top of the food chain have much higher levels of it than the insects. Why?
Which of these is a colloid?
Which coefficients balance the equation for cellular respiration, __C₆H₁₂O₆ + __O₂ → __CO₂ + __H₂O?
Choose the correct verb: “She ___ in this city since 2015.”
Which order makes the most logical paragraph? (1) Then scrub with soap for at least twenty seconds. (2) First, wet your hands with clean water. (3) Finally, rinse and dry your hands.
Choose the meaning of the word in bold: “Most hospitals limit the use of verbal orders.”
Choose the meaning of the word in bold: “The older patient had orthostatic hypotension.”
Answer: B · To present two views on the bike path
The passage gives the council’s view and the shop owners’ concern, presenting two sides of the issue.
Answer: C · The claim does not fit the overall trend.
The author points out that youth violence fell as games spread, which does not fit the claim. This weakens the claim but does not prove that games reduce crime.
Answer: Δ = −10
Reading charts and tables: read the title, the categories and the scale first. On a bar chart or line graph, follow the top of the bar or the point across to the vertical axis; every gridline is one step of the scale. A pie chart shows parts of a whole: a sector of p% stands for p% of the total and has an angle of p% of 360°.
Answer: 1 5/9
Multiplying and dividing fractions: first turn mixed numbers into improper fractions (2 1/3 = 7/3). To multiply, multiply the numerators and the denominators. To divide, keep the first fraction, change ÷ to ×, and flip the second fraction (multiply by its reciprocal). Cancel common factors and write the result in lowest terms as a mixed number.
Answer: B · Triceps brachii
Triceps brachii inserts on the olecranon of the ulna and extends the elbow. Biceps and brachialis are elbow flexors.
Answer: C · Foot drop
The common fibular nerve supplies the dorsiflexors and evertors. Damage at the fibular neck causes foot drop and a high-stepping gait. The sole is supplied by the tibial nerve.
Answer: A · Its long refractory period lasts almost as long as the contraction
The plateau of the cardiac action potential gives a long refractory period, so the muscle relaxes before it can be excited again. This allows the heart to refill.
Answer: C · Raised left atrial pressure increases pulmonary capillary hydrostatic pressure
A failing left ventricle backs up pressure into the left atrium and pulmonary veins. High capillary hydrostatic pressure pushes fluid into the lung interstitium and alveoli.
Answer: C · ATP, then glycogen, then fat
ATP is used directly but is present only in small amounts. Glycogen is broken down quickly to glucose, and fat is the largest long-term store, used mainly during longer activity or fasting.
Answer: A · Each predator eats many prey, so the pesticide builds up at each level
A stable pesticide is stored in the body rather than excreted. Each organism at a higher level eats many organisms from the level below, so the concentration rises along the food chain. This is how DDT harmed birds of prey.
Answer: C · Milk
In a colloid, particles are bigger than in a solution but do not settle out. Milk has tiny fat and protein droplets spread through water. Salt water is a solution and sand in water a suspension.
Answer: A · 1, 6, 6, 6
6 C gives 6CO₂; 12 H gives 6H₂O. Oxygen on the right is 12 + 6 = 18; glucose supplies 6, so 12 more from 6O₂. C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O.
Answer: A · has lived
“Since 2015” with an action that continues to the present needs the present perfect: has lived.
Answer: D · 2, 1, 3
Transition words show sequence. “First” begins the process, “Then” continues it and “Finally” ends it, giving 2, 1, 3.
Answer: B · Spoken
Verbal means spoken; a verbal order is given out loud rather than in writing.
Answer: A · Related to standing upright
Orthostatic hypotension is a drop in blood pressure when a person stands up, which can cause dizziness and falls.
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