When drawing a fischer projection of a sugar, the horizontal line represents groups that are
a. projecting out of the plane of the drawing toward you
b. both hydroxyl groups
c. both hydrogen atoms
d. projecting behind the plane of the drawing

The correct answer is a. projecting out of the plane of the drawing toward you.

Explanation:

Fisher's projection represents a way of showing tetrahedral carbon atoms with their substituent groups. . The vertical lines represent the groups that move away and the horizontal lines those that approach.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.