After learning of the pop quiz, Sean's heart started beating faster and he began breathing harder. He knew he would fail the test based on the fact he hadn't studied the notes last night. Which portion of the brain would view the pop quiz as a threat?
cortex
nucleus accumbens

amygdala
synapse

not always but somethings can be reproduced in a laboratory.

to defend?

explanation:

while the heads of the phospholipid structure attract water, the tails are hydrophobic. the model shows how the hydrophilic section folds around the fluid molecules to bring them into the cell so they don’t need to pass through the hydrophobic tails.