Answer:
c. A piece of mesh, keeping some things out and letting some things in
Explanation:
The cell membrane of a cell is described as "selectively permeable". Permeable means things can go through it, but the word selectively is the important part. It lets things in, but it also keeps things out. This way it can regulate the different things that go in and out of the cell. It allows certain molecules that provide the cell nourishment and other things that help it function, and at the same time, it allows waste to move out of the cell. Not all needed molecules can go through the "mesh-like" membrane, that why some of them need help.
The greek word bio means indicating or involving life or living organisms and logia means the study of
The answer is <span>Gap Junction
Gap junction is a small gap between the cells that used to transmit signall to the cells. This gap will allow the heart muscle to be activated in unison. Coordinated contractions are important for heart muscle because it creates the force that needed to pump the blood.</span>
B is the correct answer i hope this helps !!
Answer:
Spores
Explanation:
Spores are small structures produced in large quantities by bacteria (as well as fungi and plants), capable of generating a new individual.
Bacterial spores (or endospores) act as survival structures when bacteria are found in unfavorable environmental conditions.
They are produced by the bacteria themselves and are found freely inside of them. The position where the spores are found is used as a way of identifying the species of bacteria.
While in the form of spores (which can be viable even for centuries for some species), the bacteria are resistant to heat, dehydration, radiation and pH variations.
When the environmental conditions are <u>favorable</u>, the spore absorbs water until it swells and breaks. From there, germination occurs, producing a cell identical to the parental cell, reactivating the metabolism, as well as the multiplication and growth of new bacteria.
