BIOL 1030 Lecture Notes - Lecture 9: Conformational Change, Passive Transport, Gastrointestinal Tract
7 Feb 2018
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Biol 1030 lecture 9 notes animal cell: simple animals are like bags. In animals the gut has a tube: simplest animals have one opening to their gut as both mouth and anus. Intake through mouth and output through the anus: most animals do not have spines (no backbones) Invertebrates are 97% of animal diversity: vertebrates includes fish, amphibians, lizards, reptiles, birds etc, vertebrates are only 3% of animal diversity. It does have supporting system: gill creates a high surface and is needed to be moist for the exchanges of gases. Clam : digestive tract is coiled up within the cell, filter food particles out of the water, water passes over the gill and absorbs oxygen and releases carbon dioxide. Sea star : formerly known as a starfish, very short digestive tract, mouth on bottom and anus on top, water based circulatory, can turn its stomach inside out through its mouth.
