MCQ Collection

South Australia SACE Sciences MCQs

Practice South Australia SACE Sciences questions with answers and explanations.

sa-sace South Australia SACE Sciences AustraliaMedium

Science task 74: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. An enzyme extracted from pea seedlings is tested at 24°C. Which statement about enzyme action is correct?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 75: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. Cells from the bone marrow of a growing organism undergo mitosis. What is the usual outcome?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 65: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. Cells from the skin of a growing organism undergo mitosis. What is the usual outcome?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 66: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A solution has pH 2. What is its hydrogen-ion concentration?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 67: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A device transfers 419 J in 19 s. What is its average power?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 68: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. In experiment 8, pH is varied while growth of mice is measured. Why include an untreated control?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 69: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. In genetic cross 9, two heterozygotes Aa are crossed under complete dominance. What is the probability of a dominant phenotype?

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sa-sace South Australia SACE Sciences AustraliaHard

Science task 70: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A tracer starts at 0.12 mol and undergoes 2 half-lives of 7 minutes each. How much remains?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 61: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A 16 kg test trolley accelerates at 3 m/s². What net force acts on it?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 62: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A circuit has 34 V across a 9 Ω resistor. What current flows?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 63: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. A compound has molar mass 26 g mol⁻¹. What is the mass of 7 mol?

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sa-sace South Australia SACE Sciences AustraliaMedium

Science task 64: A South Australian senior class applies the information to a water, agriculture or urban-design investigation. An enzyme extracted from bacteria is tested at 36°C. Which statement about enzyme action is correct?

Choose an option to check your answer.