Answer:
The correct choice is ''ion electrochemical gradients''.
Diffusion of ions across membranes through specific ion channels is driven by <u>ion electrochemical gradients</u>.
Explanation:
An electrochemical gradient can be considered as that electrical (electrostatic pressure) and chemical (diffusion) force that determine the movement of molecules and ions across the membrane. This electrochemical gradient, in addition to causing movement of substances through cell membranes, is also a type of potential energy available for the performance of different cellular activities, potential energy called membrane potential.
Answer:
C and D have the same answer?? wdym
Explanation:
Brains of alzheimer victims display plaque, which are BETA AMYLOID PROTEIN and tangles, which are TAU PROTEIN. Alzheimer is a neuro-degenerative disease in which brain cells are progressively destroyed, leading to memory loss and dementia.
The pulmonary veins transport oxygenated blood back to the heart from the lungs, while the pulmonary arteries move deoxygenated blood from the heart to the lungs.)
