A NASA Probe Returned Samples of Rocks from the Surface

question 1

Multiple Choice

A NASA probe returned samples of rocks from the surface of Mars.From these rocks,a prokaryotic organism was isolated and remained viable under conditions similar to that of Mars.The organisms are capable of dividing to replicate themselves.In order to determine whether the DNA replication of these organisms was semiconservative,an experiment using N15/N14 (similar to that of Mendelson and Stahl) was performed.If the method of DNA replication were conservative,after one generation one would expect to see

• A)all of the DNA in the heavy (N¹⁵)band.
• B)all of the DNA in the light (N¹⁴)band.
• C)all of the DNA at a point midway between the heavy and light bands.
• D)half of the DNA in the light band, the other half in the heavy band.
• E)none of the above

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Definitions:

Raw Materials Production Needs

The quantity and type of raw materials required to meet production schedules for finished goods.

Finished Goods

Products that have completed the manufacturing process but have not yet been sold or distributed to the end consumer.

Raw Materials Cost

The expense associated with the raw materials consumed in producing a finished product.

Raw Materials Production Needs

The quantity of raw materials required to meet production targets, taking into account current inventory levels and future production plans.