P7
9/15/2017
How Cell Transport Help an Organism Maintain Homeostasis
Beep Beep! Imagine a microscopic team of semi trucks delivering supplies and taking away waste. That is the job of cell transport! Cell transport is important for an organism to maintain homeostasis. By moving things into and out of the organism, conditions are kept normal. There are three types of transport that help an organism maintain homeostasis. These three types are passive, active, and bulk transport.
To begin with, there is passive transport. Passive transport allows the organism to receive and send molecules without exerting energy. What if you could get things your chores done and not do anything but sit on the couch and watch your favorite show? That is what this transport does! Just like humans, cells need to bring in oxygen and release carbon dioxide. We also don’t have to put in that much energy into bringing oxygen into our bodies just like cells! According to biology junction, “small molecules like water, oxygen, and carbon dioxide can move in and out freely,” (Biology Junction). All of these are important for life so it is great that they can come in and out of an organism freely. …show more content…
An organism uses active transport when the molecules it wants to receive or get rid of is too big. So, the cell uses energy to help the molecules move in and out. Active transport moves “ions such as Na+, Ca+, and K+ across the cell membrane,” (Biology Junction). Also, according to this site, active support “moves materials against their concentration gradient from an area of lower to higher concentration,” (Biology