The Watson and Crick Model of a Double-Helical Structure for DNA

question 26

Multiple Choice

The Watson and Crick model of a double-helical structure for DNA was based,in part,on evidence from

• A)NMR (nuclear magnetic resonance)spectroscopy.
• B)IR (infrared)spectroscopy.
• C)atomic force microscopy.
• D)electron microscopy.
• E)X-ray diffraction .

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Definitions:

Marginal Cost Curve

A graphical representation that shows how the cost of producing one more unit of a good changes as the quantity produced increases.

Short-run Supply Curve

A graphical depiction that showcases how much of a product suppliers are willing and able to sell at different prices in the short run, with at least one input fixed.

Perfectly Competitive Industry

An industry characterized by many small firms producing identical products, with free entry and exit, and perfect information, leading to prices being determined by the market.

Alfalfa

A plant widely used for livestock feed due to its high nutritional content and also used as a cover crop for soil improvement.