The structure of plasma membrane makes it selectively permeable allowing it to regulate the passage of substances into and out of the cell. Small nonpolar molecules can easily across the phospholipid bilayer of plasma membrane because it is hydrophobic. Polar molecules and ion cannot easily across the hydrophobic portion of plasma membrane because it is hydrophilic. Polar molecules and ions usually across the plasma membrane with the help of transport proteins.
Answer:
2a and -5a
8 and -4
hahahah they are separate from each other
2a and -5a simplifies to -3a
8 and -4 simplifies to 4
Explanation:
hope this helps!
Answer:
I think it is plastic
Explanation:
even though it take 400 years for a paper bag to decompose, people use more plastic.
Answer: false
Explanation:
The vessel will respond reflexively by stretching indicating vasodilation and also allowing an increase in the the blood flow to the vessel, in contrast to vasoconstriction which causes narrowing and decreased blood flow to the organ.
