Skip to main content

How many cells are in yeast?

Yeast are classified in Domain Eukarya and Kingdom Fungi. These are heterotrophs which means they must obtain food from pre-formed organic compounds. Yeast are single-- celled (unicellular) fungi.


Yeasts are placed in the group ascomycetes or sac fungi because of their method of reproduction. Yeasts are unicellular and reproduce asexually by a process called budding. The DNA within its nucleus is replicated and the cell's cytoplasm is divided unequally into a parent and a daughter...

Yeast are classified in Domain Eukarya and Kingdom Fungi. These are heterotrophs which means they must obtain food from pre-formed organic compounds. Yeast are single-- celled (unicellular) fungi.


Yeasts are placed in the group ascomycetes or sac fungi because of their method of reproduction. Yeasts are unicellular and reproduce asexually by a process called budding. The DNA within its nucleus is replicated and the cell's cytoplasm is divided unequally into a parent and a daughter cell- a smaller bud. However, each has an identical set of genes. The bud may eventually break off from the parent cell, or remained attached until it also forms a bud.


Yeast can also reproduce sexually-two haploid nuclei fuse to form a diploid zygote.


Some yeasts are the cause of a fungal disease in the vaginal tract known as a yeast infection. Yeasts carry out fermentation which is a process by which they obtain a small amount of ATP from an energy source like glucose. Wine is formed as yeast cells ferment the sugar in grapes producing alcohol and carbon dioxide as the waste products of this reaction. Bread dough rises when yeast cells are added due to the carbon dioxide released from fermentation.

Popular posts from this blog

In chapter one of The Great Gatsby, what advice does Nick's father give him? How does this make him a good person to tell this story?

Nick says that his father advised him that, before "criticizing anyone," he "remember that all the people in this world haven't had the same advantages" as Nick.  As a result, Nick claims that he is "inclined to reserve all judgments," presenting himself to the reader as a fair and dispassionate arbiter of character, and thus, a reliable narrator.   The problem is that Nick immediately reveals himself as anything but reliable, as he then launches... Nick says that his father advised him that, before "criticizing anyone," he "remember that all the people in this world haven't had the same advantages" as Nick.  As a result, Nick claims that he is "inclined to reserve all judgments," presenting himself to the reader as a fair and dispassionate arbiter of character, and thus, a reliable narrator.   The problem is that Nick immediately reveals himself as anything but reliable, as he then launches into a discussion of how pe...
Post a Comment
Read more

How did the United States become an imperial power?

"Imperial power" is a bit of a vague label. It tends to mean several things at once, so let's unpack it. In the sense of "this country was built on conquest by force," the "imperial power" part of America actually predates the United States proper. The territories that would become the United States were imperial colonies, established by the great European empires of the 17th and 18th centuries. Much of the US Constitution and American governance generally goes back to England, history's largest and most successful imperial power, but vital aspects of American culture come from other imperial powers, such as France and Spain. Much of American culture comes from sources other than the old empires, but they were key influences on what the United States became. In the sense of "this country treats conquest by force as a fundamental component of its culture, economy and politics," the United States has always been an imperial power. Even earl...
Post a Comment
Read more

How and why does James Gatz become Jay Gatsby? Describe the young Gatsby/Gatz.

James Gatz, a poor Midwestern boy of probable Jewish lineage, becomes Jay Gatsby, a presumed WASP and wealthy socialite, when he moves to New York City and acquires his fortune. It is wealth that has allowed Gatz to transform himself into Gatsby. However, those who know his background (e.g., Daisy and Tom Buchanan) never allow him to forget that he is nouveau riche -- that is, an upstart who has just recently made his fortune,... James Gatz, a poor Midwestern boy of probable Jewish lineage, becomes Jay Gatsby, a presumed WASP and wealthy socialite, when he moves to New York City and acquires his fortune. It is wealth that has allowed Gatz to transform himself into Gatsby. However, those who know his background (e.g., Daisy and Tom Buchanan) never allow him to forget that he is nouveau riche -- that is, an upstart who has just recently made his fortune, whereas they arose from well-to-do families. Gatz became Gatsby through determination and discipline. At the end of the novel, the narr...
Post a Comment
Read more