The correct answer is proteins.
Proteins have four structures; (1) primary, (2) secondary, (3) tertiary, and (4) quaternary. Primary structures of proteins are formation of peptides and the peptide bonds between amino acids. Secondary structures of proteins involves the amino acid composition leading to hydrophobic interactions forming either alpha helices or beta sheets. Interactions between secondary structures of proteins will make the tertiary structure which is either soluble (globular) or insoluble (fibrous) proteins. Quaternary structures are the combination of two or more tertiary structures and these are called subunits.
The answer would be no. T-Tubules or Transverse tubules are
additions of the sarcolemma that infiltrate into the center of cardiac and
skeletal muscle cells. There would be no functional contraction since it
would not be capable to communicate or interconnect with the other cells.
The poem on how one's lifestyle can affect functions of a circulatory and respiratory system.
Daily practices to show
how much you know and make sure that yourself you are growing
You are very ready to keep away those disturbing diseases
which one day they may break your body into pieces.
Breathing in smoke
It allows yourself to be freely choked
Taking your blood and lungs into a problem
And again into a great risk of cold blood.
