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Test your knowledge of half-life with this exam paper. Challenge yourself with q...

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Test your knowledge of half-life with this exam paper. Challenge yourself with q...

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Questions and Answers

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?

Concentration

Pressure

Chemical bonds (correct)

Temperature

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?

The presence of cells and hereditary information Signup and view all the answers

Which theme explains the unity and diversity of life?

Evolution Signup and view all the answers

What allows organisms to move, grow, and reproduce?

Energy processing Signup and view all the answers

What do biologists study at multiple levels of organization?

Molecular biology of a cell to the evolution of populations Signup and view all the answers

How do biologists make observations and pose questions?

Using the scientific method Signup and view all the answers