The correct answer is: They usually have one or more helical regions spanning the membrane bilayer
Transmembrane proteins are type of integral proteins meaning that they are permanently attached to biological membrane. Transmembrane proteins span through the plasma membrane so most of their structure is hydrophobic.
The major role of these proteins is transport role: they act as a channels that undergo conformational change in order to move a substance through the membrane.
Classified by their structure they can be put into two types: alpha helical and beta barrels.
Answer:
It's an immortal cell line derived from cervical cancer cells taken from Henrietta Lacks used in scientific cancer research
Deforestation has impacted the quality of life in Brazil by clearing out trees and forest to be able to build more houses, overall expanding population. If I'm not mistaken, this is the main reason.
I hope this is the answer you were looking for and that it helps!! :)
Answer:
The answer is in image see it you will get all answers.
