Answer:
When the molecules are too large.
Explanation:
Facilitated diffusion refers to the passive transport of substances down the concentration gradient via specific transport proteins present in the membrane. The large, polar, charged substances and ions cannot pass through the small spaces present between hydrophobic tails of membrane phospholipids. The transport proteins transport these substances in energy independent manner.
Answer:
Ammonia will enter the cells of the fish
Explanation:
Answer: <u><em> a) Friction</em></u>
Explanation: <em>Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object.</em>
Taxonomists, at least in the traditional Linnaeus method<span> for classifying plants, separate the Plantae kingdom into four </span>major<span> groups</span>
If you have a set of choices my best answer would be traits.