Which of the Following Would Be the Closest Estimate to the Number

question 31

Multiple Choice

Which of the following would be the closest estimate to the number of times the Sun has orbited the galactic center?

• A) 1
• B) 10
• C) 25
• D) 50
• E) 100

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Definitions:

D-(-)-Glyceraldehyde

A simple sugar (monosaccharide) that serves as a reference compound for determining the D-L configuration of carbohydrates.

Fischer Projection

A method of drawing organic molecules to represent three-dimensional structures on a two-dimensional plane, where horizontal lines indicate bonds projecting out of the plane toward the viewer, and vertical lines indicate bonds projecting into the plane away from the viewer.

D-Fructose

A simple ketonic monosaccharide found in many plants, being one of the components of table sugar and high in sweetness.

Open-Chain Form

A molecular structure of certain compounds not forming a ring, typically referring to the straight or branched configurations of sugars.