BIOS 111 Lecture Notes - Lecture 24: Hemoglobin, Mutagen, Blue Baby Syndrome
Document Summary
Bios 111 disease of the day - blue baby syndrome lecture 24 (3/10/17) Nitrate comes from nitrite and nitrite comes from ammonia. All forms of life are dependent on the free nitrogen gas in the environment being converted to ammonia. Nitrogen is very stable so breaking the bond in it takes lots of energy. They take the excess electrons from ammonia. Nitrobacter get all of their energy from the one electron they take from nitrite to make nitrate. They don"t have competition because they are so rare/unique. Farmers want fertilizers to stay as ammonia. Cyanobacteria and only a few other bacteria can use straight up nitrogen from the earth. Nitrobacter and nitrosomonas use carbon dioxide as their carbon source. Denitrification: conversion of nitrate to nitrogen gas. 1 ppm of nitrate is normal in water. <10 ppm of nitrate is okay in water. 45 ppm of nitrate is the limit allowed in water.
