patrilineal descent. (noun) Tracing an individualâs descent through their fatherâs side of the family. Audio Pronunciation: (patÂ·riÂ·linÂ·eÂ·al deÂ·scent). Download Audio Pronunciation: patrilineal descent .mp3. Usage Notes: 1  Plural: patrilineal descents. 2  An agnate is blood relative in a patrilineal descent. Patrilateral refers to a personâs relations on their fatherâs side. 2  A type of unilineal descent. 3  In contrast to patrilineal descent, matrilineal descent is tracing an individualâs descent through their motherâs side of the family. 4  Also called: 5  agnatic. 6  agnatic descent. 7  agnation.
Bacteria and yeast. Anaerobic respiration takes place in yeast and some bacteria, producing ethanol and carbon dioxide. They have been used in the making of many foods such as bread, yoghurt and vinegar. You must know the structure and functions of a bacterial cell and yeast cell.Diagram of bacterial cell.naerobic respiration takes place in yeast and some bacteria, producing ethanol and carbon dioxide. They have been used in the making of many foods such as bread, yoghurt and vinegar.
Yeast. A less familiar fungus body is the yeast. Under the microscope, you can observe that yeast is composed of single cells that continually divides, by budding or fission to form lots and lots of cells.To the naked eye, this growth will appear to be a thick, syrupy growth (Figure 4a). less familiar fungus body, is the yeast. The yeast fungus is unicellular. Whether the fungus body is composed of mycelium or yeast, both will function in feeding and reproduction. Let us first discuss the more familiar filamentous appearance of the mycelium.