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.
Animal Cell Structure Animal cells are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles. Unlike the eukaryotic cells of plants and fungi, animal cells do not have a cell wall.nimal Cell Structure Animal cells are typical of the eukaryotic cell, enclosed by a plasma membrane and containing a membrane-bound nucleus and organelles. Unlike the eukaryotic cells of plants and fungi, animal cells do not have a cell wall.