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==Yeast Cells==

==Yeast Cells==

Over 600 different species of yeast are known and God has widely distributed them in nature. They are found in association with other microorganisms as part of the normal inhabitants of [[soil]], vegetation, marine and other aqueous environments. Some yeast species are also natural inhabitants of [[man]] and animals. While some species are highly specialized and found only in certain habitats at certain times of the year, other species are generalists and can be isolated from many different sources.

Over 600 different species of yeast are known. They are found in association with other microorganisms as part of the normal inhabitants of [[soil]], vegetation, marine and other aqueous environments. Some yeast species are also natural inhabitants of [[man]] and animals. While some species are highly specialized and found only in certain habitats at certain times of the year, other species are generalists and can be isolated from many different sources.

Baker’s (or brewer's) yeast (''Saccharomyces cerevisiae'') is used to leaven bread throughout the world and it is the type of yeast that people are most familiar with. It is also used in making beer and wine, although sometimes other closely related species such as ''Saccharomyces carlsbergensis'' or ''Saccharomyces bayanus'' are used instead.

Baker’s (or brewer's) yeast (''Saccharomyces cerevisiae'') is used to leaven bread throughout the world and it is the type of yeast that people are most familiar with. It is also used in making beer and wine, although sometimes other closely related species such as ''Saccharomyces carlsbergensis'' or ''Saccharomyces bayanus'' are used instead.

A typical yeast cell is approximately equal in size to a human [[red blood cell]] and is spherical to ellipsoidal in shape. Because it is so very tiny, it takes about 30 billion yeast cells to make up to one gram of compressed baker’s yeast. Yeasts reproduce magnanimously by budding, a process during which a new bud grows from the side of the existing cell wall. This bud eventually breaks away from the mother cell to form a separate daughter cell. Each budding yeast cell, on average, undergoes this budding process 12 to 15 times before it is no longer capable of budding. During commercial production, yeast is grown under carefully controlled conditions on a [[sugar]] containing medium typically composed of [[beet]] and [[cane]] molasses. Under ideal growth conditions a yeast cell reproduces every two to three hours.

A typical yeast cell is approximately equal in size to a human [[red blood cell]] and is spherical to ellipsoidal in shape. Because it is so very tiny, it takes about 30 billion yeast cells to make up to one gram of compressed baker’s yeast. Yeasts reproduce magnanimously by budding, a process during which a new bud grows from the side of the existing cell wall. This bud eventually breaks away from the mother cell to form a separate daughter cell. Each budding yeast cell, on average, undergoes this budding process 12 to 15 times before it is no longer capable of budding.

 

During commercial production, yeast is grown under carefully controlled conditions on a [[sugar]] containing medium typically composed of [[beet]] and [[cane]] molasses. Under ideal growth conditions a yeast cell reproduces every two to three hours. Under anaerobic (devoid of oxygen) conditions the yeast cell will carry out the metabolic process of [[fermentation]] to produce ethanol and carbon dioxide.

==Other notable yeasts==

==Other notable yeasts==