M4: L-3 Flashcards

1
Q

What are monosaccharides?

A

Simple sugars that cannot be broken down to more simple sugars

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2
Q

What are the two steric categories for fisher projected carbohydrates?

A

D and L

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3
Q

And R glyceraldehyde would be in which category when fisher projected? And an S?

A
  • D

- L

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4
Q

When labelling a carbohydrate D or L, which carbon do we base this of?

A

The carbon closest to the CH2OH

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5
Q

What is included in the ring of a furanose?

A

Four C’s and one O

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6
Q

What is included in the ring of a pyranose?

A

Five C’s and one O

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7
Q

Is Glucose a furanose or a pyranose?

A

Pyranose

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8
Q

In an alpha monosaccharide, is the OH group on the anomeric carbon on the same or opposite side as the CH2OH group?

A

Opposite

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9
Q

In a beta monosaccharide, is the OH group on the anomeric carbon on the same or opposite side as the CH2OH group?

A

Same

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10
Q

Is a solution of glucose equal parts alpha and beta?

A

No

  • 37% alpha
  • 63% beta
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