Facilitated diffusion is the process by which molecules move across the plasma membrane with the aid of membrane proteins like channels and carriers. These molecules move down a concentration gradient, which gives them the potential to diffuse into (or out of) the cell.
Passive transport is a subset of facilitated diffusion. Because the solution is travelling down the concentration gradient, assisted diffusion is still passive transport even when it incorporates transport proteins. The cell membrane can easily be traversed by small, nonpolar substances.image outcome.A case of enhanced diffusion is glucose transfer. The lipid bilayer of the membrane prevents glucose from passing through since it is a big, polar molecule. In order to pass through, it requires carriers known as glucose transporters.
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Answer: B. on the surfaces of organs, on the walls of cavities, on the outer surface of the body, and in glands of the body.
Explanation:
The epithelial tissues are the tissues that are present throughout the parts of the body. They form the covering of the body surfaces. It helps in lining the body cavities and organs. It forms the major tissues of the glands.
These tissues are important as they perform diversity of functions in the body. Such as protection, absorption, secretion, filtration, excretion, sensory reception and diffusion.
Answer:
A mitochondrion is a double-membrane-bound organelle found in most eukaryotic organisms. Mitochondria generate most of the cell's supply of adenosine triphosphate, used as a source of chemical energy. They were first discovered by Albert von Kölliker in 1880 in the voluntary muscles of insects.
C.
The definition of a drainage basin is as follows: <span>the land area that contributes water </span>into<span> a stream</span>
Answer:
Pollution that runs off the land often combines with the sediments at the bottom of the ocean or other types of water. In this way, fish may become poisoned. This is an example of how fish interact with the following are types of rocks that make up the lithosphere exceptThe amount of carbon dioxide in the atmosphere would greatly increase the population .