Answer:
B) Na+
Explanation: Na+ molecule is polar, oxygen and carbon dioxide are nonpolar molecules. The cell membrane is a <em>phospholipid bilayer</em> made up of lipid molecules with polar and nonpolar ends. Since it is a bilayer, two phospholipid layers are arranged, one on the other in such a way that one faces the back of the other. The non polar ends are away from outside and inside of the cell, while the polar ends faces towards all the molecules inside and outside the cell.
Since polar-polar molecules repel each other, Na+ can't pass through the cell membrane easily. So it uses the proteins attached the cell membrane inside and outside to transport such molecules by using energy in terms of ATP.
c. It never changes during the experiment.
Answer:
got this
Explanation:
The book called "On the Origin of Species"
Its the right way to choose what the wind says . type michaelangelopunto for more details
Answer:
shoulder muscle
When the basketball player is lifting the ball, the shoulder muscle is being used to lift over her head.
Explanation:
Brainliest please?
