Answer:
(1) they keep toxic substances out of the cell; (2) they contain receptors and channels that allow specific molecules, such as ions, nutrients, wastes, and metabolic products, that mediate cellular and extracellular activities to pass between organelles and between the cell and the outside environment; and (3) they separate vital but incompatible metabolic processes conducted within organelles.
:)
Hope this helps!!! Good luck!!! ;)
Answer: Polygenic recessive
Explanation: Because polygenic dominance describes a relationship between the alleles of a polygenic trait where some alleles are dominant and others are recessive.
I think the correct answer would be A. If the epithelial cells in the stomach failed to produce mucus, then the gastric juice would digest the stomach lining, resulting in ulcers. The mucus that are produced by specialized epithelial cells aids in the protection of the stomach lining from the juices that are acidic. Thus, without this mucus, the lining would be damage and would cause stomach problems.
Answer:
A. Without them, complex organisms cannot perform different
functions.
Explanation:
Different cells perform different functions to make a complex organism
The answer is B (<span>fish and amphibian) :)</span>