Answer:
b. a person has an emotional need for a drug
Answer: amygdala
Explanation: i hope this helps
Answer:
hydrophilic
Explanation:
Large polar or ionic molecules, which are hydrophilic, cannot easily cross the phospholipid bilayer. Charged atoms or molecules of any size cannot cross the cell membrane via simple diffusion as the charges are repelled by the hydrophobic tails in the interior of the phospholipid bilayer.
Cellular respiration provides the ATP necessary for muscle contractions