Formula sheets, the key method steps for every topic and 16 practice problems, with full solutions at the back.
“The temperature dropped below freezing overnight. In the morning, the puddles on the path were hard and slippery.” Why were the puddles hard?
Read the sentences: (1) Then add the pasta and stir. (2) Fill a large pot with water. (3) Drain the pasta when it is soft. (4) Bring the water to the boil. Which order is correct?
Which fraction or mixed number in lowest terms equals the decimal 0.06? Click it.
A cylinder has a radius of 7 in and a height of 19 in. Using π ≈ 3.14, find its volume V.
Which two regions of the adult spine normally show a lordosis (curve concave towards the back)?
Injury to the common fibular (peroneal) nerve at the neck of the fibula typically causes:
Low plasma albumin, as in severe liver disease, causes oedema mainly because:
During exercise, blood flow to active skeletal muscle rises greatly. What is the main cause?
Why do many plants close their stomata on hot, dry days?
Mature human red blood cells have no nucleus and no mitochondria. What follows from this?
When a nucleus emits a beta particle, how do its mass number and atomic number change?
A solution of acetic acid conducts electricity only weakly, while hydrochloric acid of the same concentration conducts strongly. Why?
Which phrase uses a hyphen correctly in a compound adjective with a number?
In which sentence is “their” used correctly?
Choose the meaning of the word in bold: “Turn the patient to the prone position for the back examination.”
Choose the meaning of the word in bold: “The infection was systemic.”
Answer: C · The water in them had frozen into ice.
Water freezes into ice below freezing temperatures, making the puddles hard and slippery.
Answer: B · 2, 4, 1, 3
You fill the pot (2), boil the water (4), add the pasta (1) and drain it when soft (3).
Answer: 3/50
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 = 2923 in³
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: B · Cervical and lumbar
The cervical and lumbar regions are lordotic (secondary curves). The thoracic and sacral regions are kyphotic (primary curves).
Answer: A · 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: C · Plasma oncotic pressure falls
Albumin generates most of the plasma oncotic pressure that pulls fluid back into capillaries. When it falls, more fluid stays in the tissues.
Answer: B · Local metabolites such as CO₂, H⁺, K⁺ and adenosine dilate the arterioles
Active hyperaemia: metabolites produced by working muscle relax arteriolar smooth muscle locally, overriding sympathetic vasoconstriction in that tissue.
Answer: D · To reduce water loss
Closing the stomata reduces water loss by transpiration and helps the plant avoid wilting. The cost is that less CO₂ can enter, so photosynthesis slows.
Answer: A · They cannot divide and make their ATP by glycolysis only
Without mitochondria, red cells rely on glycolysis in the cytoplasm, so they do not use the oxygen they carry. Without a nucleus, they cannot divide or make new proteins, and they survive about 120 days.
Answer: B · Mass number stays the same and atomic number rises by 1
In beta decay a neutron becomes a proton, so the atomic number rises by 1. The total of protons plus neutrons is unchanged, so the mass number stays the same.
Answer: A · Acetic acid only partly ionises, so it forms fewer ions
HCl ionises almost completely (a strong electrolyte), while acetic acid ionises only slightly (a weak electrolyte). Fewer ions carry less current.
Answer: A · a three-day course
A number + unit placed before a noun is hyphenated, and the unit stays singular: a three-day course, a ten-year-old child.
Answer: C · The students handed in their reports.
“Their reports” shows possession. The others need “they’re” (they are) or “there” (a place or “there is”).
Answer: B · Lying face down
Prone means lying on the stomach with the face downward.
Answer: D · Affecting the whole body
Systemic means affecting the entire body, as opposed to local or localised.
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