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Questions and Answers
What is the definition of half-life?
What is the definition of half-life?
- The time taken for a substance to double its original mass
- The time taken for a substance to decay completely
- The time taken for a substance to stabilize
- The time taken for a substance to decay to half its original mass (correct)
Which factor does not affect the half-life of a substance?
Which factor does not affect the half-life of a substance?
- Concentration
- Pressure
- Chemical bonds (correct)
- Temperature
What happens to the half-life of a radioactive substance as it decays?
What happens to the half-life of a radioactive substance as it decays?
- It increases
- It fluctuates
- It decreases
- It remains constant (correct)
What unifies biology as a single, coherent field?
What unifies biology as a single, coherent field?
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Which theme explains the unity and diversity of life?
Which theme explains the unity and diversity of life?
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What allows organisms to move, grow, and reproduce?
What allows organisms to move, grow, and reproduce?
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What do biologists study at multiple levels of organization?
What do biologists study at multiple levels of organization?
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How do biologists make observations and pose questions?
How do biologists make observations and pose questions?
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