Herbaceous stem grow thicker as a result of cell division in the vascular cambium of the stem.
Mitochondria<span> use </span>proteins<span> to break down sugars and produce cellular energy in the form of ATP. ... No matter where </span>mitochondrial proteins are<span> made, they </span>are synthesized<span> on ribosomes that translate messenger RNA into the amino acids that form the </span>protein<span> chain.
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The hormone described above is the hormone Melatonin.
Melatonin is a hormone secreted by the pineal gland in the brain, which helps regulate other hormones and maintains the body's circadian rhythm. This rhythm is an internal 24 hour clock that plays a critical role when we fall asleep and when awake. When it is dark the body releases more melatonin.