RNA. A type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and uracil (U); usually single-stranded; functions in protein synthesis and as the genome of some viruses.
Underactive thyroid Photo Credit George Doyle/Stockbyte/Getty Images. It's hard to lose weight when your metabolism slows down, but there are things you can do. The thyroid, a butterfly-shaped gland in your throat, produces hormones that regulate many bodily functions, including metabolism.ollow a low-calorie diet. Anyone who wants to lose weight must burn more calories than are consumed. Unfortunately, for someone with an underactive thyroid, it can be difficult because the metabolism slows, meaning the body naturally burns fewer calories.
Having thyroid hormone levels that are too high (overactive thyroid gland). Sometimes the thyroid gland makes too much thyroid hormone, which is called hyperthyroidism. Think of your body as a car and your thyroid as the engine. An overactive thyroid makes your body idle too fast.Symptoms of overactive thyroid gland include. 1  Feeling nervous and irritable. 2  Having trouble concentrating.ometimes the thyroid gland makes too much thyroid hormone, which is called hyperthyroidism. Think of your body as a car and your thyroid as the engine. An overactive thyroid makes your body idle too fast. Symptoms of overactive thyroid gland include. 1  Feeling nervous and irritable. 2  Having trouble concentrating.