<span>a. They have homologous structures because they have a common ancestor.
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Answer: 133 km/h
Explanation
Answer:
Membrane proteins perform a variety of functions vital to the survival of organisms: Membrane receptor proteins relay signals between the cell's internal and external environments. Transport proteins move molecules and ions across the membrane.
Explanation:
they help transport some substances through the membrane.
Its B
because you know how much time each of them are getting
so hope this helps:)
