A urinary tract infection (UTI) is an infection involving the kidneys, ureters, bladder, or urethra. These are the structures that urine passes through before being eliminated from the body. The kidneys are a pair of small organs that lie on either side of the spine at about waist level.
In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes.he genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression âthe nucleus is, therefore, the control center of the cell.
On the outside of the cell is a cell wall, but it is not made of cellulose. Inside this is a membrane enclosing the cytoplasm. A yeast cell contains a nucleus, like those in plant and animal cells. There are mitochondria in yeast cells.There are no chloroplasts in yeast cells. Yeast cells do contain ribosomes, the same size as ribosomes in animal and plant cells. Some of these yeast cells have small outgrowths-buds-so they are about to reproduce.Yeast cell (sectional view).east comes in strange forms ... Yeast is a living organism. It can be used to make bread and alcoholic drinks such as beer and wine. Different species of yeast may cause infections such as thrush. Yeast consists of single cells.