The Oldest Endospores to Be Revived and Cultured to Produce

question 40

Multiple Choice

The oldest endospores to be revived and cultured to produce live bacteria are

• A) 250 million years old.
• B) 250,000 years old.
• C) 2,500 years old.
• D) 25,000 years old.
• E) 250 years old.

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Definitions:

1/1,000,000

A mathematical fraction denoting one part per million (ppm), often used to measure concentration levels in chemistry and environmental science.

Denominator

The denominator is the bottom part of a fraction, used to calculate a part of a whole.

Fraction

A numerical expression of the number of portions of a whole by using the number of portion over the designated whole number, as in 1/8 or “one-eighth.”

Liter

A unit of measure; 1,000 mL or approximately 1 quart.