Aprimary function of polysaccharides attached to glycoproteins and glycolipids of animal cell membranes is to: a)facilitate diffusion of active transport of molecules into the cell. b) mediate cell-to-cell recognition. c) maintain membrane fluidity at low temperatures. d) maintain the integrity of a fluid mosaic membrane.

The correct answer is b) mediate cell-to-cell recognition

Explanation:

Cell to cell recognition is necessary for a cell to know and distinguish its neighbor cells. Cell adhesion is one of the examples cell to cell communication when a cells comes in contact with other cells by interaction with their specialized protein complex.

This contact between cells is accomplished by plasma membrane components like carbohydrates that are attached to proteins and lipids which makes glycoproteins, glycolipids, and glycolipoproteins.

This cell to cell communication is important for cell to proliferate and function together in organs like in liver, liver cell only works when they are surrounded by more liver cells.

So the right answer is b) mediate cell-to-cell recognition.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.