barm - a commercial leavening agent containing yeast cells; used to raise the dough in making bread and for fermenting beer or whiskey. yeast. yeast cake - small cake of compressed moist yeast. brewer's yeast - yeast used in fermenting beer. leaven, leavening - a substance used to produce fermentation in dough or a liquid. mother - a stringy slimy substance consisting of yeast cells and bacteria; forms during fermentation and is added to cider or wine to produce vinegar.
No. Being that viruses are not a living organism, they are neither contain cells, nor are they a cell themselves. Viruses are merely few macromolecules (such as nucleic acid and protein) which combines to form a pathogenic particle.dit: a cell wall-as the name implies-is a part of a cell. Viruses are not cells. â¦ Cells are living, viruses are not.
Report Abuse. Viruses reproduce by invading living cells, hijacking their cellular machinery, and forcing the host cell to make copies of the virus. Viruses are very simple: they usually contain no more than a protein coat (called a capsid) and nucleic acids.In some viruses, the nucleic acid is DNA; in others, it's RNA.eport Abuse. Viruses reproduce by invading living cells, hijacking their cellular machinery, and forcing the host cell to make copies of the virus. Viruses are very simple: they usually contain no more than a protein coat (called a capsid) and nucleic acids.