Which of the following describes movement of molecules into a cell through active transport? (4 points) Hydrocarbons dissolve in the lipid bilayer and travel down a concentration gradient. Molecules move through passages in the cell membrane that are created by channel proteins. Pockets in the cell membrane form vesicles around extracellular material during endocytosis. Vesicles carrying large molecules fuse with the cell membrane during exocytosis.

it supports cell theory.it states that all living cells are made from cells

idk what happened..you tell

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