The muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction.
The question is incomplete as it does not have the options which are:
Protein carrier
Lipid carrier
Porin carrier
All of the choices are correct
Answer:
Protein carrier
Explanation:
The transport of molecules through diffusion can be passive or facilitated. The facilitated diffusion in which the molecules are facilitated to cross required tow type of protein channels which are the channel proteins and the carrier proteins.
The carrier proteins are the transmembrane proteins which are specific for ions and to transport the molecules change their shape of conformation. The change in the shape is responsible for the release of ions on the other side of the membrane.
Thus, Protein carrier is correct.
Answer:
D. Animals burrow tunnels into the ground
Explanation:
In this scenario we have interaction between the biosphere and the geosphere. The biosphere is represented by all of the living organisms on the planet Earth. The geosphere is represented by all of the crust on the planet Earth. The animals are living organisms, thus they are part of the biosphere, and by doing an activity in the ground, in this case burrowing tunnels, they interact with the geosphere, so we have an interaction between the biosphere and the geosphere.
The empirical or simplest formula of any carbohydrate is (CH2O)n. This formula looks like carbon water just as carbohydrate suggests hydrated or watered carbon. The formula tells us that all carbohydrates are made of carbon, <span>hydrogen, and oxygen atoms in a 1:2:1 ratio.</span>
