Anaerobic pathways operate when is absent (or limited). Glycolysis is the first stage to yield 2 , 2 , and 2 . In the absence of oxygen, the reduced coenzyme used in glycolysis, , cannot donate its electrons to the electron transfer chain. Once it is oxidized, we call it .

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

the missing space is phylum

find out why you don't need to aim at such a syllable pattern in english. you may have thought that haiku was supposed to be 5-7-5, so what's up with the logo by the gravitational pull of celestial objects, can touch us in unexpected ways.