Which form of D-glucose in the ring configuration has the -OH at carbon-1 below

Question

Which form of D-glucose in the ring configuration has the -OH at carbon-1 below the ring, in the Haworth Projection?
A. hemiketal B. ?- (beta) C. hemiacetal D. ?- (alpha) E. ?- (gamma) Which form of D-glucose in the ring configuration has the -OH at carbon-1 below the ring, in the Haworth Projection?
A. hemiketal B. ?- (beta) C. hemiacetal D. ?- (alpha) E. ?- (gamma) Which form of D-glucose in the ring configuration has the -OH at carbon-1 below the ring, in the Haworth Projection?
A. hemiketal B. ?- (beta) C. hemiacetal D. ?- (alpha) E. ?- (gamma) Which form of D-glucose in the ring configuration has the -OH at carbon-1 below the ring, in the Haworth Projection?
A. hemiketal B. ?- (beta) C. hemiacetal D. ?- (alpha) E. ?- (gamma)

Explanation / Answer

. Formation of a ring creates a new asymmtric carbon (called the anomeric carbon) on the carbon where the aldehyde or ketone originally was (carbon 1 or 2). The hydroxyl on this carbon can exist in a Haworth projection pointing upwards (beta) or downwards (alpha)

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