TRUE. Cells -> Tissues -> Organs -> Organ Systems.
Amino Acids. Proteins are the most diverse biomolecules on Earth, performing many functions required for life. Protein enzymes are biological catalysts, maintaining life by regulating where and when cellular reactions occur. Structural proteins provide internal and external support to protect and maintain cell shape.
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A eukaryotic cell has a nucleus and a prokaryotic cell does not
In rem sleep the eyes moves rapidly and the body is paralysed and cannot move. all the senses are blocked as well.
