C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
Answer:
All of these examples show evidence for evolution because they show change over time and descent from a common ancestor
Answer:
Explanation: B IS THE CORRECT ANSWER THAT BIT*H PICKED THE WRONG ANSWER
Answer:
B. retain its urine in it’s blood stream
Explanation:
Sharks are cartilaginous fishes that lives in the ocean. Oceans are always salty, hence organisms need to maintain a salt-water balance between their internal and external environment because of osmosis. Sharks are able to maintain this by ensuring that the amount of solutes in their internal environment is as much as that in their external environment.
Sharks retain a chemical contained in urine called UREA in their bloodstream to counter the osmotic effect of the salt concentration in the waters they live. This helps them maintain a concentration balance with their environment.
Yes it is C but for future reference, both A and B are referring to solids, and D is referring to a gas, hope this is helpful later!
