All of the Rhodopsins in the Haloarchaeotes Have How Many

Question

All of the rhodopsins in the haloarchaeotes have how many alpha helical transmembrane domains?
A) one
B) three
C) five
D) seven
E) nine

Accepted Answer

Rhodopsins in haloarchaeotes have seven alpha helical transmembrane domains, which is a common structural feature of this family of proteins.