What occurs when cr^3+ ions are reduced to cr^2+ ions?

a) electrons are lost and the oxidation number of chromium increases

b) electrons are lost and the oxidation number of chromium decreases

c) electrons are gained and the oxidation number of chromium increases

d) electrons are gained and the oxidation number of chromium decreases

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry

What extra step distinguishes fermentation from glycolysis