Answer: A good answer will include the following key points.
• The four basic tastes are salty, sour, sweet, and bitter.
• A fifth taste, umami, has been proposed. It is the taste associated with monosodium glutamate (MSG), and is found in many protein-rich foods.
• "Different taste worlds" refers to individual differences in the experience of taste.
o Our experience and culture affect our taste.
o Because of genetic differences, some people have more taste buds, are supertasters, and find certain substances (e.g., broccoli, caffeine, saccharin) to be unpleasantly bitter.
o Supertasters also perceive sweet or salty substances to be sweeter or saltier than non-supertasters.
o Variations in the sense of smell can also alter our taste experience.