Topics 3,4,5 quiz studying

Cell size

What does Cellular metabolism depend on?

The size of a cell

What dictates the function of the cell?

a high surface area-to-volume ratio

What do cells need in order to optimize the exchange of material through the plasma membrane?

small cells

What kind of cells have a higher surface area to volume ratio?

separate the internal and external cell environment?

What does the plasma membrane do?

selective permeability

The ability of membranes to regulate the substances that enter and exit

weak hydrophobic interactions which cause it to move and shift

How is the membrane held together in the fluid mosaic model?

helps maintain fluidity at low temperatures

What do unsaturated hydrocarbon tails provide for the membrane?

kinked tails

What prevents the tight packing of phospholipids?

Cholesterol

What helps maintain fluidity at high and low temperature?

integral proteins

proteins that are embedded into the lipid bilayer; are amphipathic

peripheral proteins

proteins that are not embedded into the lipid bilayer

mosaic

comprised of many macromolecules

Transmembrane proteins

proteins that are embedded into the lipid bilayer (other name for integral proteins)

Glycoproteins

what is more abundant glycolipids or glycoproteins?

plasmodesmata

hole like structures in the cell wall filled with cytosol that connect adjacent cells