The two are different, one is biological and the other is chemical.

Yeast are some single-celled fungi and are not units of phylogenetic classification. It is a general name for unicellular fungi from several families such as Ascomycetes and Basidiomycetes. It generally refers to various unicellular fungi that can ferment sugars and can be used in brewing production. Some are pathogenic bacteria. It is a model for genetic engineering and cell cycle research. biology. Yeast is the earliest microorganism used in the history of human civilization. Can survive in anoxic environment. There are currently more than 1,000 species of yeast known. According to the ability of yeast to produce spores (ascospores and basidiospores), yeasts can be divided into three categories: spore-forming strains belong to ascomycetes and basidiomycetes. Fungi that do not form spores but reproduce mainly through budding are called incomplete fungi, or "pseudoyeasts" (yeast-like). It is currently known that very few yeasts are classified into the phylum Ascomycota. Yeast is widely distributed in nature and mainly grows in acidic, moist and sugary environments. It is also very important in winemaking.

Baking powder is an edible additive. It is a white powder composed of soda ash, other acidic materials, and corn flour as a filler.

Baking powder is a compound leavening agent, also known as foaming powder and baking powder. It is mainly used as a rapid loosening agent for flour products. Some types of baking powder are divided into sweet type and edible type. It is a rapid fermentation agent and is mainly used for rapid fermentation of grain products. It is used in large amounts when making cakes, cakes, steamed buns, steamed buns, shortbread, bread and other foods.

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