In animals, the metabolism of nutrients produces a series of waste substances. Can be toxic if levels become high. The main waste products are carbon dioxide, ammonia, urea, uric acid, mineral salts and water. Other substances are eliminated by the excretory system.
Biology and Geology by Sergio Rincón Hernández is licensed under a Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0 Internacional License.
2022/04/10
THE CIRCULATORY SYSTEM
In animals, transport of gases and nutrients is carried out by the circulatory system. Consists of several elements:
TYPES OF RESPIRATORY SYSTEMS
Animals take oxygen from their enviroment and transport it to the cells.The entire process is called cellular respiration,carbon dioxide is produced as a waste product and is expelled outside the cell.
External respiration is the process of breathing.Animals inhale oxygen from the enviroment and exhale carbon dioxide.
NUTRITION AND DIGESTIVE PROCESS
Animals are classified as heterotrophs. They cannot make their own food. They need to feed on other organisms.
Heterotrophic nutrition, organic substances are obtained from the plants and animals. Converted into matter and energy.
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Animals take oxygen from their enviroment and transport it to the cells.The entire process is called cellular respiration, carbon dioxide is...