If biology is not a natural science, if biology is uniquely at the whim of a capricious intervener, then it is stamp collecting. If we cannot discern a chain of causation, we are just collecting unrelated facts.
http://www.ossm.edu/biology/micro2.htm
The Basics of Microbiology (w/out crediting evolution or intelligent design)
I. Cellular Organelles
A. Mitochondria
* The major energy producing component of the cell, they are small, membrane bound, granuler, and contain enzymes.
* Electron microscopy allowed the mitchondria to be viewed close-up which revieled that thier shape can range from spherical to rod-shaped.
* Each mitchondrian has an inner matrix and an outer envelope.
* The outer envelope consists of an inner and outer electron-dense membranous component, the inner portion is covered with cristae, or projections inward toward the matrix.
* The matrix of the mitchondria is an amorphorus (finely granular) substance which contains DNA, RNA, and possibly ribosomes.
B. Lysosomes
* Lysosomes are membrane-bound organelles primarily responsible for inter-cellular digestion.
* There are two types of lysosomes, primary (those which have not yet began enzymatic processes) and secondary (those which have.)
* Phagosomes: Pinocytic and Phagocytic invaginations which have engulfed liquid/solids and broken off of the cell membrane.
* Phagcytosis: The engulfing of solids by the creation of phagosomes.
* Pinocytosis: The engulfing of liquids by creation of phagosomes.
* Secondary lysosomes are a group of varied structures such as multi-vascular bodies, residual bodies, autosomes, hemosiderin granules, and lipofuscin granules. All these arise through the fusion of a primary lysosome and a vacuole.
C. Centrioles
* Short fiberous rod-shaped organelles.
* Within the the cell, there are usually two centrioles collectivelt referred to as Diplosome.
* Located near the nucleas, each is made of 9 sets of 3 microtubules.
* Centrioles serve to organize micotubles and to determine polarity during late prophase and metaphase of cell division.
* These organelles can also move to a location below the cell membrane where they give rise to basal bodies, cilia, and flagellae.
D. Microtubules (the cytoskeleton)
* Microtubules are straight or slightly curved delicate organelles located in almost all cells.
* Microtubules serve several functions, they maintain cell shape as well as aiding in interacellular transport.
* In cellular division, they aid in pulling the chromosomes to different poles of the cell.
* It is also thought that microtubules could be responsible for transporting water within the cell.
E. Filaments
* Filaments are responsible for three major functions:
A: Cytoskeleton filaments- Provide rigidity as well as tensile strength for the cell.
B: Myofiliments-