AP BIOLOGY

THE CELL

TRANSPORT INTO AND OUT OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a colloid
A
a partical that keeps the same original partical of a drink
B
a mixture that contains undisolved particals that do not settle out
Explanation: 

Detailed explanation-1: -A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size between those of a solution and a suspension. The particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas.

Detailed explanation-2: -a 33) A mixture containing small, undissolved particles that do not settle out is a colloid.

Detailed explanation-3: -A colloid is a mixture where very small particles of one substance are evenly distributed throughout another substance. They appear very similar to solutions, but the particles are suspended in the solution rather than fully dissolved.

Detailed explanation-4: -A colloid is an intermediate between suspension and true solution. It is a homogenous-looking heterogeneous mixture in which particles have size between 1 nm to 100 nm (1 nm = 10−9 m) and are dispersed in a continuous medium.

Detailed explanation-5: -colloid, any substance consisting of particles substantially larger than atoms or ordinary molecules but too small to be visible to the unaided eye; more broadly, any substance, including thin films and fibres, having at least one dimension in this general size range, which encompasses about 10−7 to 10−3 cm.

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