<prompt> The Vitamin A activity of beta-carotene compared to that of retinol is?2-Jan4-Jan6-Jan8-Jan  <response>: Beta-Carotene provitamin A: This is found in plant foods. lt is cleaved in the intestine to produce two moles of retinal.ln humans, this conversion is inefficient, hence beta-carotene possesses about one-sixth vitamin A activity compared to that of retinol.Reference: Satyanarayana- Biochemistry, 3rd edition, pg-119 