Chapter Review

uSING vOCABULARY

1. For each of the following pairs of terms, explain how the meanings of the terms differ.

a. biogenesis and spontaneous generation b. ribozyme and enzyme c. photosynthesis and chemosynthesis d. archaebacteria and cyanobacteria

2. Explain the relationships between radioactive decay, isotopes, and half-life.

_ and_are examples of nonliving, cell-like

17. List and describe two types of autotrophs. State how each makes its own food.

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