Although DNA Is the Main Hereditary Material in All Life-Forms,it

question 29

Multiple Choice

Although DNA is the main hereditary material in all life-forms,it lacks one important characteristic of being a candidate for the first life-form.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)Because it has only four different bases,it does not carry enough information;therefore,it cannot adapt and evolve.
• D)The type of sugar found in DNA is much too complicated to have been present early in Earth's history.

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Definitions:

LIFO

Last In, First Out, an inventory valuation method where the most recently produced items are recorded as sold first.

FIFO

An inventory valuation method where the first items produced or purchased are the first used or sold.

FIFO

"First In, First Out," an accounting method for valuing inventory where the first items placed in inventory are the first sold.

Current Costs

The costs that would have to be incurred to replace or reproduce an asset in the current period, under current market conditions.