DNA Is the Main Hereditary Material of All Life

question 32

Multiple Choice

DNA is the main hereditary material of all life. However, DNA lacks one important characteristic for the first forms of life. Why have researchers rejected the idea that DNA was found in the first life-form?

• A) It does not function as a catalyst.
• B) It is not stable enough to have withstood early Earth's harsh atmosphere.
• C) DNA only has four types of bases. Therefore, DNA cannot adapt and evolve.
• D) The type of sugar found in DNA is too complicated to have been present early in Earth's history.

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Definitions:

Outputs

The goods or services produced by a business or an economy.

Long-run Average Cost

The per unit cost of production when all inputs, including those typically fixed, can be adjusted.

Short-run Marginal Cost

The cost incurred by producing one additional unit of a product or service in the short term, where some factors of production are fixed.

Envelope

In economics, often describes a theoretical outer limit or boundary, such as the envelope curve which envelopes all the possible positions of equilibrium.