Answer:
a speciation event from a tree
Answer:
Glucose from digested food enters intestinal epithelial cells by active transport. Why would intestinal cells use active transport when most body cells use facilitated diffusion?
Explanation:
Receptors are needed for both Short and Long range cell signaling.
<h3>What are receptors?</h3>
In the cell, there are some special proteins who play the role of receiving external signals. These are what we call receptors.
These receptors could function for both long and short range cell signaling. Hence, Receptors are needed for both Short and Long range cell signaling.
Learn more about cell signaling:brainly.com/question/14412293
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Choice D would be your answer