NEET PG DENTAL EXAM

Detailed explanation-1: -Yellow and Orange Pigments are Carotenoids.

Detailed explanation-2: -The long chain of alternating double bonds (conjugated) is responsible for the orange color of beta-carotene. The conjugated chain in carotenoids means that they absorb in the visible region-green/blue part of the spectrum. So -carotene appears orange, because the red/yellow colors are reflected back to us.

Detailed explanation-3: -Carotenoids are tetraterpene pigments, which exhibit yellow, orange, red and purple colors. Carotenoids are the most widely distributed pigments in nature and are present in photosynthetic bacteria, some species of archaea and fungi, algae, plants, and animals.

Detailed explanation-4: -Carotenoids are among the most widely distributed pigments and naturally exhibit red, orange and yellow colors. Carotenoids are lipid-soluble pigments, which can be found in many kinds of fruit, vegetables, fungi, flowers and some kinds of animals (Ötles and Çagindi, 2008).