Antibodies are specific proteins that recognize and combine with foreign substances such as viruses, bacteria, and cells from other organisms. Generation and Transmission of nerve impulses receptor proteins allow nerve cells to respond to specific stimuli. Control of growth and differentiation the activities of different cells in multicellular organisms are coordinated by hormones
Soursop is the fruit of Annona muricata, a broadleaf, flowering, evergreen tree native to Mexico, Cuba, Central America, the Caribbean islands of Hispaniola and Puerto Rico, and northern South America, primarily Colombia, Brazil, Peru, Ecuador, Venezuela.t is in the same genus, Annona, as cherimoya and is in the Annonaceae family. The soursop is adapted to areas of high humidity and relatively warm winters; temperatures below 5 Â°C (41 Â°F) will cause damage to leaves and small branches, and temperatures below 3 Â°C (37 Â°F) can be fatal.
Sourdough bread is made by the fermentation of dough using naturally-occurring lactobacilli and yeast. Sourdough bread has a mildly sour taste not present in most breads made with baker's yeast, due to the lactic acid produced by the lactobacilli.rench bakers brought sourdough techniques to Northern California during the California Gold Rush, and it remains a part of the culture of San Francisco today. The nickname remains in  Sourdough Sam , the mascot of the San Francisco 49ers.