Calculate the number of disulfide bond arrangements possible for each of the polypeptides listed below, assuming that each of the cysteine residues forms a disulfide bridge. Also assume that all disulfide bridges are intramolecular, not intermolecular.

a. a polypeptide with four cysteines

b. a polypeptide with six cysteines

c. a polypeptide with 8 cysteines

d. a polypeptide with 10 cysteines

Sand spinifex grass is adapted to growing on sand dunes. it is a rapidly spreading plant and the creeping runners produce new root systems. which of these best explains the benefits of these features? a. it limits water loss through the leaves. b. it provides support by anchoring the plant. c. it protects the plant from predators. d. it allows the plant to tolerate salt. reset submit

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

Why would a drug the damages capsids treat a viral infection