d) Providing objective opinions

c) Reporting ethical violations

a) Updating their knowledge

b) Waste of natural resources

Two types are sensitive to different sensations, and one type responds broadly to all tastes

Two types respond broadly to all tastes, and one type is sensitive to different sensations

Vary in their sensitivity depending on where they are lcoated on the tongue

All types respond broadly to all tastes

All types are sensitive to different sensations

Specialized supporting cells with microvilli that have ion channels

Bipolar neurons with a cilia containg the receptor proteins

Specialized receptor cells with a cilia containg the receptor proteins

Specialized endings of nerve fibres with microvilli that have ion channels

Specialized receptor cells with microvilli that have ion channels