Cell for free

Stephanie Hodgson

for free


a small dense spherical structure in the nucleus of a cell during inter-phase and makes ribosomes.


A central or essential part around which other parts are gathered or grouped the nucleus keeps all the important information inside of it.

cell membrane

The semipermeable membrane that encloses the cytoplasm of a cell. Also called cytomembrane,plasmalemma, plasma membrane.

cell wall

A membrane of the cell that forms external to the cell membrane whose main role is to give cells rigidity, strength and protection against mechanical stress. It is found in cells of plants, bacteria, archaea, fungi, and algae. Animals and most protisits do not have cell walls.


In eukaryotic cells, the cytoplasm is that part of the cell between the cell membrane and the nuclear envelope. It is the jelly-like substance in a cell that contains the cytsol,organelles, and inclusions, but not including the nucleus. In fact, the cytoplasm and the nucleus make up the protoplasm of a eukaryotic cell.


Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system that takes in nutrients, breaks them down, and creates energy for the cell. The process of creating cell energy is known as cellular respiration. Most of the chemical reactions involved in cellular respiration happen in the mitochondria. A mitochondrion is shaped perfectly to maximize its efforts.


a neuron in the cerebral cortex with short dendrites and with either a long axon or a short axon that ramifies in the grey matter

smooth E.R

A part of endoplasmic reticulum that is tubular in form rather than sheet-like and lacks ribosomes. Its functions include lipid synthesis, carbohydrate metabolism,calcium concentration, drug detoxification, and attachment of receptors on cell membrane proteins.

rough E.R

An endoplasmic reticulm(ER), a eukaryotic organelle made up of a system of membranous tubes and sacs, that is studded with ribosomes on its surface giving it a rough appearance under the microscope.


A minute round particle composed of RNA and protein that is found in the cytoplasm of living cells and serves as the site of assembly for polypeptides encoded by messenger RNA.


A small cavity in the cytoplasm of a cell, bound by a single membrane and containing water, food, or metabolic waste.


A chlorophyll-containing plastid found in algal and green plant cells.