Flash cards made for the 2025-2028 exams from the text book and SME notes, CIE AS level Biology
| Front | what componentents does the trachea have |
| Back | -cartilage-goblet cells-smooth muscle-cilia |
| Front | what is the function of lignin in the xylem vessels |
| Back | hard and waterproof provides support to the cell, when it builds up in the cells the cells contents die leaving completely empty space forming the lumen |
| Front | Define Smoothe Endoplasmic Reticulum |
| Back | -Has NO ribosomes-Makes lipids and steroids such as cholesterol and reproductive hormones like oestrogen and testosterone-has cisternae (like fingers), which bud off and form vesicles |