Answer:
In mammals, oxygen is carried through the red blood cells called hemoglobin. The reason is that the oxygen is very important for the cell for releasing energy. This energy is used by the cell in different processes.
2) These adaptations are adapted by the organisms in order to perform different functions. In slow twitch skeletal muscles having high number of mitochondria because it requires more energy while fast twitch skeletal muscles contains less amount of mitochondria due to low requirements of energy. These characteristics are adapted according to the performance of the body parts.
C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
Fungi includes mushrooms, yeast, and mold. Fungi are multicellular and eukaryotic. They are also heterotrophs, and gain nutrition through adsorption
