Question 381 Fat soluble vitamins are? A) Soluble in alcohol B) one or more Propene units C) Stored in liver D) All these No Details
Question 382 Retinol and retinal are interconverted requiring dehydrogenase or reductase in the presence of? A) NAD or NADP B) NADH + H+ C) NADPH D) FAD No Details
Question 383 Preformed Vitamin A is supplied by? A) Milk, fat and liver B) All yellow vegetables C) All yellow fruits D) Leafy green vegetables No Details
Question 384 Retinal is reduced to retinol in intestinal mucosa by a specific retinaldehyde reductase utilising? A) NADPH + H+ B) FAD C) NAD D) NADH + H+ No Details
Question 385 β-Carotene, precursor of vitamin A, is oxidatively cleaved by? A) β-Carotene dioxygenase B) Oxygenase C) Hydroxylase D) Transferase No Details
Question 386 Vitamin A or retinal is a? A) Steroid B) Polyisoprenoid compound containing a cyclohexenyl ring C) Benzoquinone derivative D) 6-Hydroxychromane No Details
Question 387 Vitamins are? A) Accessory food factors B) Generally synthesized in the body C) Produced in endocrine glands D) Proteins in nature No Details