Select three of the following foods that are made with the direct help of microorganisms.(3 points)
1) Yogurt: Yogurt is made by the fermentation of milk by lactic acid bacteria, such as Lactobacillus bulgaricus and Streptococcus thermophilus. These bacteria convert lactose (milk sugar) into lactic acid, which gives yogurt its tangy taste and thick texture.
2) Bread: The process of making bread involves the action of yeast, which is a type of microorganism. Yeast ferments the sugars present in the dough and produces carbon dioxide gas, causing the bread to rise.
3) Cheese: Cheese is made through a process called coagulation, where bacteria or fungi, such as Lactobacilli or Penicillium, help in breaking down the milk proteins and converting lactose into lactic acid. This acidification helps in the curdling of milk and the formation of cheese curds.