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This quiz consists of 5 multiple choice and 5 short answer questions through Part 5, Chapter 25.

Multiple Choice Questions

1. The author mentions the case of bacteria surviving for two years in a sealed camera lens where?
(a) Atop Mount Everest.
(b) Moon's surface.
(c) In an underground cave.
(d) Under the sea.

2. While he worked at General Motors Research Corporation in 1921, engineer Thomas Midgley, Jr. developed what dangerous gasoline additive?
(a) Combustion catalyst.
(b) Hydrochloric acid.
(c) Tetraethyl lead.
(d) Isopropyl alcohol.

3. Scientists now believe that life began on Earth how long ago?
(a) 5.75 million years.
(b) 3.85 billion years.
(c) 7.35 trillion years.
(d) 6.25 thousand years.

4. The KT meteor caused dinosaurs to become extinct but paved the way for what to become the new dominant species?
(a) Birds.
(b) Mammals.
(c) Plants.
(d) Insects.

5. In 1871, Lord Kelvin suggested that life on Earth started because of:
(a) "Seeds" from space arriving by way of a meteor.
(b) Ash falling from volcanic eruptions.
(c) Lightning striking pools of chemical "soup."
(d) Droplets of water reacting with superheated rocks.

Short Answer Questions

1. What must amino acids do to become protein?

2. The human body is composed of how many cells?

3. Astronomer Edmond Halley approached mathematician Sir Isaac Newton to get his help figuring out why planets:

4. The Geiger counter is a:

5. Plate tectonics refers to:

(see the answer key)

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