Dopamine may function as a prolactin-inhibiting hormone. a. true b. false

True

Prolactin is a product of anterior pituitary gland and best known its role in the production of milk. Also, it plays essential role in the regulation of the immune system, metabolism and pancreatic development. However, secretion of prolactin is under inhibitory control that is mediated by dopamine.

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.