cell membrane

a thin membrane around the cytoplasm of a cell

cell wall

a rigid layer of nonliving material that surrounds the cells of plants and some other organisms

central vacuole

A membranous sac in a mature plant cell with diverse roles in reproduction, growth, and development.


an organelle found in plant and algae cells where photosynthesis occurs

compound microscope

light microscope that has two converging lens systems: the objective and the eyepiece

eukaryotic cell

cell with a nucleus (surrounded by its own membrane) and other internal organelles

prokaryotic cell

cell lacking a nucleus and most other organelles


the organelles in which nutrients are converted to energy


a part of the cell containing DNA and RNA and responsible for growth and reproduction


a specialized part of a cell


diffusion of water


the act of dispersing or diffusing something


The process of discharging particles from inside a cell to the outside is called?

semi permeable

Adj. Describes how the cell membrane will let some things in, and not others

passive transport

transport of a substance across a cell membrane by diffusion

active transport

transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient


a jellylike fluid inside the cell in which the organelles are suspended