The semipermeable membrane between the cell contents and either the cell wall or the cell's surroundings
A molecule that is a constituent of the inner bilayer of biological membranes, having a polar, hydrophilic head and a nonpolar, hydrophobic tail.
cellulose-based rigid outer layer of a plant cell that provides structure
jelly-like fluid that all of the organelles of a cell are floating in.
A membrane bound sac that contains materials involved in transport of the cell.
an organelle containing enzymes responsible for producing energy
an organelle responsible for converting light energy into sugar
green pigment in plants that absorbs light energy used to carry out photosynthesis
whip-like tail used for movement
tiny hairlike projections used for movement
That portion of the endoplasmic reticulum studded with ribosomes. Used to modify proteins
Ribosomes are not found on its surface. It contains collections of enzymes that perform specialized tasks including the synthesis of membrane lipids and the detoxification of drugs.
A cell that contains a nucleus and membrane bound organelles
A unicellular organism that lacks a nucleus and membrane bound organelles (bacteria)
First to identify and name "cells"
Improved the microscope and saw small microorganisms
Diffusion of water
the passive movement of molecules from high to low concentration
allows some things through, but not others
the pressure that water molecules exert against the cell wall
First to note plants are made of cells
Said all living things are made of cells
Proposed all cells come from other cells
A network of long protein strands in the cytosol that helps support the cell
a part of the cell containing DNA and RNA and responsible for growth and reproduction
An organelle in eukaryotic cells consisting of stacks of flat membranous sacs that modify, store, and route products of the endoplasmic reticulum.
Dark spot i the nucleus of the cell. Stores materials needed to make ribosomes.
Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
An organelle containing digestive enzymes
"water fearing" -- the tails of a phospholipid
"water loving" -- the heads of a phospholipid
movement of molecules that requires no energy
Movement of molecules from an area of higher concentration to an area of lower concentration.
the difference in the concentration of a substance from one location to another
the diffusion of water
Describes a solution whose solute concentration is equal to the solute concentration inside a cell
A cell with a higher concentration of water inside of the cell than out. It pushed water out and shrivels up
A solution that has a lower concentration of solutes than another. (or more water than another)
diffusion of molecules across a membrane through transport proteins
the movement of molecules across a membrane from low concentration to high concentration; requires energy
Active transport process where a cell engulfs materials with a portion of the cell's plasma membrane and releases the contents inside of the cell.
An active transport process by which materials are expelled from a cell