How you can say that glucose is cyclic compound? (Guj CET 2011)

Despite having the aldehydic group, glucose does not 2, 4- DNP test, Schiff’s test and it does not form the hydrogen sulphite addition product with NaHSO3. It indicates that glucose forms cyclic ring. Biomolecules 22 26. Which of the following hormones contains iodine? (JIPMER 2012) (a) Insulin (b) Testosterone (c) Adrenaline (d) Thyroxine Iodine is essential in the production of thyroid hormones. It is mainly found in salt and seafood. Thyroxine is produced by thyroid gland. Thyroxine synthesizes two primary hormones-one is thyroxine (T4) and other one is triiodothyronine (T3). The numbe