Which type of macromolecules is a steroid

Steroids are also lipids but they have a carbon skeleton of four connected rings (no glycerol here) (3.9, pg 41). The different properties of different steroids are due to the attached functional groups. Cholesterol is a steroid that can be modified to form many hormones.

Explanation:

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.