Please click-on from the following list of Human Cell Web Sites.

I recommend you do a 'google' 'images' search for pictures and diagrams of a specific cell
structure. I also suggest you do a 'youtube' search for instructional video on transcription,
translation, mitosis or any other cellular process.

1) The Cell

2) The On-Line Biology Textbook: The Cell

3) The Parts of a Human Cell

4) Cell Structure

5) Test yourself on this tutorial of an animal cell

6) The Cell Cycle and Mitosis

Nucleolus: A nucleolus is a non membrane bound structure that is made up of nucleic acids and
proteins within the nucleus. It is responsible for the manufacture of the subunits that eventually make
up ribosomes, which are the cell’s protein producing factories.

Nucleus: The nucleus is the cell’s “control center” and it contains most of the cell’s genetic
material. This material makes up DNA molecules and form chromosomes. Inside these chromosomes are the
nuclear genomes. It is responsible for maintaining the integrity of the genes and regulating gene expression.

Ribosomes: The ribosomes are actually components of cells that turn amino acids into proteins.
In most living things, DNA produces RNA, which then makes protein for the body. Ribosomes are responsible
for reading the information from the messenger RNA and using that information to produce the right proteins.

Vesicle: Vesicles are bubbles of liquid inside a cell that stores and transports various substances
within that cell. They store both cellular products and waste. They are also responsible for disposing
waste. Vesicles are only found in animal cells.

Rough Endoplasmic Reticulum (ER): The surface of an ER is studded with special ribosomes that produce
protein. These ribosomes are not stable until they actually bind to the ER. This occurs when the ER begins to
synthesize proteins meant for the secretion pathway. The ER is necessary to many functions: secreting proteins,
producing important membrane proteins, assembling glycosylation, and producing lysosomal enzymes.

Golgi Apparatus: The primary function of this organelle is to process and then package proteins and lipids
after they are synthesized but before they continue on to their destination; it’s almost like the middleman
of the equation. This is especially important for the processing of proteins meant for secretion.

Cytoskeleton: This is a kind of skeleton that is made up of protein which is found inside the cytoplasm.
Present in all cells, it’s important for the intracellular transport of vesicles and organelles, as well as the
process of cellular division.

Smooth Endoplasmic Reticulum: Called the SER, these organelles are important to the metabolic processes
like the synthesis of steroids and lipids, the regulation of calcium concentration, the metabolism of carbohydrates,
drug detoxification, and more.

Mitochondria: This is a membrane-enclosed organelle that is sometimes called “cellular power plants” because
it generates the cell’s supply of ATP, which is its chemical energy source. Mitochondria are also involved in a few
minor processes within the cell.

Vacuole: They are compartments filled with water that contains organic and inorganic molecules in solution.
They can absorb materials within the cells. Their function varies depending on where they are present but they contain
waste products, maintain an acidic internal pH, maintain turgor within cells, and export unwanted materials from the cells.
This organelle is present in all plant and fungal cells, as well as some animal cells.

Cytoplasm: This part of the cell is also enclosed in the membrane. It’s where most cellular activities occur
including cell division. Many metabolic pathways are constructed there as well.

Lysosome: These are spherical cells that contain enzymes. They break down food to make it easier to digest in the
body. They are sometimes referred to as “suicide bags” because they also sometimes digest themselves.
Lysosomes are only found in animal cells.

Centrioles within centrosome: These cells are barrel-shaped cells that are not found in plants and
most fungi. Only present in animal cells, they are necessary to cell division.

Cell Membrane/Plasma Membrane: The phospholipid bilayer that surrounds the cell, containing the
cytosol and all the organelles.

Inside a Eukarytic Cell

Inside the Cell

Insdie a Cell

Anatomy of an Animal Cell