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.
All cells have a cell membrane and the cytoplasm (liquid medium). A nucleus is found in eukaryotic cells, along with various organelles such as ribosomes, vacuoles and mitocho â¦ ndria.Viruses have neither, and instead have a protein coat and a structure, usually a tail, that can penetrate a living cell.2 people found this useful. Not all cells have organelles; only eukaryotic cells do. Viruses, likewise, are not eukaryotic cells and thus, have no organelles. Viruses are generally very small parti â¦ cles many orders of magnitude smaller than the smallest cell.