CELL MEMBRANE EXAM REVIEW

Glycolipid is defined as ___________ that is bound to a carbohydrate.

any membrane lipid

Facilitated diffusion is the __________ transport of ions and polar molecules through a membrane.

facilitated

A hypotonic solution has __________ solute concentrations than another solution.

lower

An isotonic solution has __________ solute concentrations compared to another solution.

the same

A hypertonic solution has __________ solute concentration than another solution.

higher

Uniport refers to transporting __________ in one direction.

1 molecule

Symport proteins move __________ molecules in the same direction.

2 different

Antiport proteins move __________ molecules in __________ directions.

2 different; 2 different

Integral proteins are embedded in the __________.

lipid bilayer

Peripheral proteins are found on the __________ of the membrane.

surface

Endocytosis involves __________ large molecules into the cell.

bringing

Exocytosis is when vesicles move through the cell and __________ with the cell membrane.

fuse

Pinocytosis is also known as __________.

cell drinking

Phagocytosis refers to __________ by the cell.

cell eating

The functions of the cell membrane include transportation of materials, cell recognition, and __________.

communication between cells

Phospholipids have __________ fatty acid tails linked to a glycerol backbone with a phosphate group.

2

The heads of phospholipids are __________, while the tails are __________.

hydrophilic; hydrophobic

Sterols are known to act as __________ in the membrane.

stabilizers

Active transport requires __________ to move substances against a gradient.

energy (ATP)

Facilitated diffusion allows substances to move __________ their concentration gradient.

down

Passive transport occurs from __________ to __________ concentrations.

high; low

In a hypertonic solution, cells will __________ due to water moving out.

shrivel

In a hypotonic solution, animal cells may __________ due to water moving in.

lyse (burst)

The phospholipids' unsaturated tails lead to greater __________ in the membrane.

fluidity

High temperatures can help keep __________ together in the membrane.

phospholipids