In 2009,which of the Following Did Scientists Discover Was Possible

question 93

Multiple Choice

In 2009,which of the following did scientists discover was possible on early Earth?

• A)abiotic synthesis of RNA monomers
• B)bacterial cell walls made mainly of chitin
• C)gram-positive bacteria with outer membranes that contain lipopolysaccharides
• D)gram-negative bacteria with cell walls composed of a thick layer of peptidoglycan

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Definitions:

Marginal Benefit

The additional benefit or usefulness experienced by consuming or producing another unit of a good or service.

Marginal Cost

The supplementary cost of manufacturing another unit of a product or service.

Consume

The action of using up goods and services to satisfy personal or collective wants or needs.

Opportunity Cost

The cost of foregoing the next best alternative when making a decision or choosing to do one thing over another.