Because of steric constraints, purines in purine nucleotides are restricted to two stable conformations with respect to deoxyribose, called syn and anti.

            

The two molecules shown in the figures are best described as

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#Question id: 8846

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Why are hydrocarbons insoluble in water?

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#Question id: 8847

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A compound contains hydroxyl groups as its predominant functional group. Which of the following statements is true concerning this compound?

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#Question id: 8849

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Humans can digest starch but not cellulose because

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#Question id: 8850

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Whatever its ultimate cause(s), the Cambrian explosion is a prime example of

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#Question id: 8851

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Why is territoriality an adaptive behavior for songbirds maintaining populations at or near their carrying capacity?

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#Question id: 8853

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Which of the following is correctly associated with sponges?