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Biology 7 Online
OpenStudy (anonymous):

What are the main differences between 1) Diffusion and Osmosis? 2) Cell Division and Mitosis? 3) Facilitated Diffusion and Active Transport? and 4) Endocytosis and Exocytosis?

OpenStudy (anonymous):

The main difference between diffusion and osmosis the requirement of semi-permeable membrane in the case of osmosis while there is no such need of any membrane for diffusion to occur. Mitosis is a type of cell division in which chromosome number is strictly retained. The other type of cell division is meiosis in which chromosome number is reduced to half.

OpenStudy (aaronq):

Diffusion is for solutes, Osmosis is for water, both mean the crossing across semi-permeable membranes. Along with what the person above said, mitosis produces 2 somatic daughter cells, meiosis produces 4 sex cells, every time they divide. Faciliated diffusion doesn't use ATP and goes along with the concentration gradient (meaning high to low concentration), Active transport uses ATP (and is aided by proteins) and goes AGAINST it's concentration gradient (meaning low to high concentration). Endo = in Exo = out cytosis = ~transport

OpenStudy (anonymous):

For diffusion , there is no such need for semi-permeable membrane like for example when perfumed is sprayed at 1 corner of the room , we can smell perfume at other corner as well after few moments , this is explained by diffusion and example doesn't state membrane. correct me if i am wrong.

OpenStudy (aaronq):

it's true that diffusion can be related to the spontaneous movement of gases, but for this exercise, they are referring to the crossing of substances phospholipid bilayers, since they asked to contrast it with osmosis.

OpenStudy (aaronq):

substances through*

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