Name: __________________________ Date: _____________
1. Life arose on Earth approximately _______ years ago.
A) 4 billion
B) 4 million
C) 4,000
D) 1.5 billion
E) 400,000
2. Which of the following is the feature or component of organisms that allows for life in
such a wide variety of environments on Earth?
A) Prokaryotic cells
B) Eukaryotic cells
C) Homeostasis
D) Adaptation
E) Model systems
3. Which of the following is not a characteristic of most living organisms?
A) Regulation of internal environment
B) One or more cells
C) Ability to produce biological molecules
D) Ability to extract energy from the environment
E) None of the above
4. Photosynthesis was a major evolutionary milestone because
A) photosynthetic organisms contributed oxygen to the environment, which led to the
evolution of aerobic organisms.
B) photosynthesis led to conditions that allowed life to arise on land.
C) photosynthesis is the only metabolic process that can convert light energy to
chemical energy.
D) photosynthesis provides food for other organisms.
E) All of the above
5. The fact that all cells come from preexisting cells is a component of _______ theory.
A) animal
B) genetic
C) cell
D) plant
E) adaptation
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