Unit Test — Cumulative exam Answers

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Which resource is renewable?

coal

oil

steel

wind

Which component is affected when a catalyst is added to a chemical reaction?

the amount of substrate

the activation energy

the amount of product

the concentration of reactants

Which factors affect natural selection?

inheritance, isolation, adaptation

variation, overpopulation, adaptation

isolation, overpopulation, speciation

variation, inheritance, speciation

How do oxbow lakes form?

Rivers are dammed, and the water builds up, creating a lake.

Runoff pools in areas of low elevation, creating a temporary lake.

Rivers wear away banks until the bank is broken and the river flows straight.

Glaciers leave deep channels in the ground, which fill with water and become a lake.

Which flow chart correctly organizes the structures of heredity, from least to most complex?

codon ® gene ® DNA ® chromosome

gene ® chromosome ® codon ® DNA

DNA ® codon ® chromosome ® gene

chromosome ® DNA ® gene ® codon

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