MCQ Collection

Queensland QCE Sciences MCQs

Practice Queensland QCE Sciences questions with answers and explanations.

qld-qce Queensland QCE Sciences AustraliaMedium

Science task 111: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A 23 kg test trolley accelerates at 5 m/s². What net force acts on it?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 112: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A circuit has 24 V across a 9 Ω resistor. What current flows?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 113: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A compound has molar mass 26 g mol⁻¹. What is the mass of 5 mol?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 114: A Queensland senior class applies the information to a reef, climate or regional-services investigation. An enzyme extracted from pea seedlings is tested at 32°C. Which statement about enzyme action is correct?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 115: A Queensland senior class applies the information to a reef, climate or regional-services investigation. Cells from the bone marrow of a growing organism undergo mitosis. What is the usual outcome?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 116: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A solution has pH 4. What is its hydrogen-ion concentration?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 117: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A device transfers 269 J in 30 s. What is its average power?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 118: A Queensland senior class applies the information to a reef, climate or regional-services investigation. In experiment 58, temperature is varied while growth of bacteria is measured. Why include an untreated control?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 119: A Queensland senior class applies the information to a reef, climate or regional-services investigation. In genetic cross 59, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

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qld-qce Queensland QCE Sciences AustraliaHard

Science task 120: A Queensland senior class applies the information to a reef, climate or regional-services investigation. A tracer starts at 0.20 mol and undergoes 4 half-lives of 2 minutes each. How much remains?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 108: A Queensland senior class applies the information to a reef, climate or regional-services investigation. In experiment 48, pH is varied while growth of mice is measured. Why include an untreated control?

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qld-qce Queensland QCE Sciences AustraliaMedium

Science task 109: A Queensland senior class applies the information to a reef, climate or regional-services investigation. In genetic cross 49, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

Choose an option to check your answer.