Biology teacher

 Cell Shape and Size Explained | Prokaryotic Cells NEET Biology Different cell shapes, cell sizes and prokaryotic cell types explained for NEET Biology preparation. - Dr.Sanjaykumar Pawar  UNIT OF LIFE – Cell Size, Shape and Prokaryotic Cells (Easy NEET Notes) 1. Different Shapes of Cells Red Blood Cells (RBCs) Shape: Round and biconcave disc. Biconcave means depressed in the center on both sides. This shape increases surface area for oxygen transport. RBCs carry oxygen to all parts of the body. Average diameter = about 7 µm. White Blood Cells (WBCs) Shape: Irregular and amoeboid. Amoeboid means they can change their shape. They move from blood vessels into tissues. WBCs help in body defense and immunity. Columnar Epithelial Cells Shape: Long, narrow and column-like. Found in the lining of stomach and intestine. Help in absorption and secretion of substances. Nerve Cell (Neuron) Shape: Branched and long. Consists of cell body, dendrites and axon. Ner...