Answer:
Glycolysis
Electron transport chain (ETC)
Explanation:
Glycolysis breaks down the one molecule of glucose into two molecules of pyruvate through a series of reactions. Dehydration of 2-Phosphoglycerate into phosphoenolpyruvate releases two molecules of water for one glucose molecule. The reaction is catalyzed by enolase. During the electron transport chain, reducing powers NADH and FADH2 give their electrons to the molecular oxygen via a series of proteins. The process reduces the molecular oxygen into the water. Therefore, glycolysis and ETC are the sources of water for desert animals.
Answer:
Mechanisms enabling one cell to influence the behavior of another almost certainly existed in the world of unicellular organisms long before multicellular organisms appeared on Earth. Evidence comes from studies of present-day unicellular eucaryotes such as yeasts. Although these cells normally lead independent lives, they can communicate and influence one another's behavior in preparation for sexual mating. In the budding yeast Saccharomyces cerevisiae, for example, when a haploid individual is ready to mate, it secretes a peptide mating factor that signals cells of the opposite mating type to stop proliferating and prepare to mate (Figure 15-2). The subsequent fusion of two haploid cells of opposite mating types produces a diploid cell, which can then undergo meiosis and sporulate, generating haploid cells with new assortments of genes.
Explanation:
Brainliest please?
