Which statement would be true of a membrane-bound protein that works in conjunction with a sodium–potassium pump during secondary active transport?
a. it will be able to transport an ion in both directions across the cell membrane and a small molecule in one direction.
b. it will block a small molecule from moving across the cell membrane in response to an increase in concentration of an ion in the external environment.
c. it will move a small molecule across the cell membrane in response to a build-up in concentration of the molecule in the external environment.
d. its conformation will change when both an ion and a small molecule bind to it.

What evidence could be used to convince policy makers to change a shipping lane from going through a whale breeding ground? information on the number of all whale species currently alive information on the number of all whales hit by boats in the given area information on the number of whale deaths in the world's oceans information on the number of whale offspring born every year. (a) scientists could collect and combine data on fish populations all around the world to show that their populations are declining. (b) scientists collect and combine data on fish populations all around the world to show that their populations are increasing. (c) scientists work together and use past data to show that fish populations are becoming locally extinct in some areas. (d) scientists work together and use past data to show that some fish populations are adapting to environmental changes.