Capillaries
The exchange of food, oxygen, and wastes occurs in the cell through various cellular processes such as diffusion and active transport. This exchange happens at the cell membrane, where nutrients and oxygen are taken in, and waste products are eliminated to maintain cellular functions and homeostasis.
capillary
wastes i think
Capillaries
Yes, they do. Just as humans do.
Arteries to arterioles to capillaries where exchange occurs. Oxygen and nutrients are exchanged for carbon dioxide and wastes.
Capillaries exchange food, oxygen, and carbon dioxide.
Pure diffusion ... everything flows from high concentration toward low. No energy is expended in these exchanges.
They depend on the constant waterflow of the ocean through their bodies to obtain food and oxygen and remove wastes.
Through the umbilical cord and placenta
Cells exchange materials with their environment to obtain nutrients, oxygen, and other essential molecules needed for their survival and function, and to remove waste products and harmful substances. This exchange helps cells maintain their internal balance, or homeostasis, which is crucial for their proper functioning.
Flat worms do not have blood. There fore, they do not require a respiratory system to infuse fresh oxygen into the blood. This lack of a respiratory system, means they do not have lungs.