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.
Answer:
D.
Explanation:
I think because there a people who don't have a large intestines and they live normal lives.
Answer:
(1) gravity
Explanation:
Gravity is what keeps planets and those planet's moons in orbit.
Answer:
I think its Carbon-Dioxide-Oxygen
Explanation:
