The large precursor molecule that can be cleaved into ACTH, MSH, and endorphins is proopiomelanocortin (POMC). POMC is a protein that is primarily produced in the anterior pituitary gland and is cleaved into various smaller peptides that have different physiological functions.
prohormones. These prohormones are inactive and need to be cleaved or modified to become biologically active peptide hormones.
A semipermeable membrane is a large glucose molecule that requires facilitated diffusion but an oxygen molecule does not.
the nucleus
A molecule containing a very large number of atoms.
exocytosis
prohormones. These prohormones are inactive and need to be cleaved or modified to become biologically active peptide hormones.
macro-molecule
Seratonin It is released into the brain in large amount when ectsasy is ingested
preprohormones
A semipermeable membrane is a large glucose molecule that requires facilitated diffusion but an oxygen molecule does not.
To "cleave" something means to cut it, usually in half. The English word has a French origin, and is also the origin of the large butcher tool, a cleaver.
molecule
GENETICS
Another word for a large molecule is a macromolecule.Examples are nucleic acids (DNA, RNA), lipids and phospholipids, proteins, and polysaccharides.
When a large molecule enters a cell, it is typically transported through the process of endocytosis. This can occur via phagocytosis for solid particles or pinocytosis for liquid particles. The cell membrane surrounds the large molecule forming a vesicle that is then taken into the cell.
Starches are of a type of large molecule known as polysaccharides
the nucleus