True, the plasma membrane is selectively permeable and controls the various substances that are allowed into the cell and that are allowed to leave the cell.
Cytoplasm (glycolysis) and the mitochondria (cristae and matrix)
The correct answer is letter a. the forces are equal and opposite.
A car's windshield has the same force of the car while it is moving, if a humming bird flies towards a moving vehicle without the bird getting hurt, the bird and the car may be considered to have equal yet opposite forces, which left the hummingbird unharmed.
