Any living thing can be defined as the organism that has life. A chimpanzee and a pine tree have very little in common but we can say they are living things as they are made up of one or more cells.
They both perform all the processes that is responsible for living like respiration, reproduction et cetera.
They are made of cells and perform the vital processes for living.
Conduction or propagation is the term used to <span>describe the regeneration of the action potential down the membrane of the axon of the neuron. Furthermore, this process mainly depends on the structure of nerve fibers in which it could either be myelinated or unmyelinated. </span>
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Answer:
the correct option is D.
Explanation:
in case of quaternary level of protein structure , protein has more than one polypeptide chains and in this level , the polypeptide chains are aggregated and held together by hydrophobic interactions, hydrogen and ionic bonds. this specific arrangement is called the quaternary structure.for example :-
Haemoglobin the oxygen carrying protein of red blood cells, exhibits such a structure.