digestive
diffusion occurs naturally facilitated diffusion and active transport need energy
Which organ system IN human is most directly involved in the transport of oxygen?(1)digestion (2)nervous(3)excretory(4)circulatory
Substances can be moved from a region of lower concentration to a region of higher concentration, against the concentration gradient. Hence, it is useful for plants for absorbing mineral salts from the soil, reabsorption of useful substances back into the bloodstream in the kidney and such.
your heart,blood,veins,red blood cell,white blood cell
If you're talking about transporting materials into and out of the cells, they would be diffusion, osmosis, neither of which requires the use of energy; and active transport, which does require energy.
The main components of the transport system in human beings are the heart, blood, and blood vessels.
The immune system
Yes it is. There are many examples of active transport in living organisms.1. Plant roots absorb minerals from the soil water surrounding them by active transport.2. In the Human body, the glucose formed during digestion passes from the small intestine into the blood stream by active transport.
diffusion occurs naturally facilitated diffusion and active transport need energy
Systemic circulation is the part of the human transport system that delivers oxygen to the liver from the heart.
You Sexual parts...not
The human-made system of defense, defense walls, also known as long walls, connected the city of Athens to port of Piraeus. Salvatore Salsa
active transport is different from diffusion. active transport has to do with the movement of chemical substance through a gradient of concentration. diffusion has to do with requiring the expenditure of energy
Active transport is a function of the cell membrane.
Is probaly the skin but it could also be the imune system.
An example of active transport occurs in human nerve cells. Here, sodium ions are constantly transported out of the cell into the external fluid bathing the cell, a region of high concentration of sodium. (This transport of sodium sets up the nerve cell for the impulse that will occur within it later.)
The psychodynamic model of human nature emphasizes the behavior as a complex system hidden by active defenses. This is the model that is used to explain the various human behaviors.