Structures in a cell membrane that help particles to move into and out of a cell
during active transport are made of what?
O
phospholipids
carbohydrates
protein
O
chromosomes

Structures in a cell membrane that help particles to move into and out of a cell  during active transport are made of what?

Phospholipids is the structure in cell membrane that helps particles to move in and out of a cell during active transport

Explanation:

answercells,tissues,organs,organ,system-organism;

levels of biological organization; organism,population,community,ecosystem,biome,biosphere,

hope this .good luck

reflection is the bouncing back of a propagating wave when it encounters a barrier; usually shows an image of the source of light wave

1) bounces back from an opaque material

2) bounces back from the boundary

3) seen in mirrors

refraction is the bending of a propagating wave having a shift of direction as it passes through different media; usually seen in lenses to magnify or lessen

1) passes through a prism

2) moves from one medium to another

3) seen in lenses