Cellular and microbiology allow scientists to study cells and microorganisms. Cellular biology is the study of cells, including their structure and function. Microbiology is the study of microorganisms, which include algae, bacteria, and viruses.
We hear about them on the news and we listen to politicians argue for and against them using them to treat disease. Learn all about stem cells and the research, challenges and controversy that surround them. See more »
The human body is composed of about 10 trillion cells. Everything from reproduction to infections to repairing a broken bone happens down at the cellular level. Find out all about cells.
See more »
Like the one ring of power in Tolkien's fantasy trilogy, "Lord of the Rings," deoxyribonucleic acid (DNA) is the master molecule of every cell. From its structure to what it does, learn all about DNA.
See more »
Are you the first to complain when it's too hot or too cold at work? Extremophiles have news for you: Suck it up. These hardy microbes make most of us humans seem like whimpering Goldilocks, and studying them may tell us more than you might imagine.
See more »
We hear about them on the news and we listen to politicians argue for and against them using them to treat disease. Learn all about stem cells and the research, challenges and controversy that surround them.
See more »Algae, organisms that lack true roots, stems, and leaves; that usually contain chlorophyll; and whose reproductive organs are single-celled structures.
See more »Amoeba, or Ameba, a protozoan (one-celled organism) noted for the simplicity of its body structure.
See more »Bacteria, (singular: Bacterium), microscopic, one-celled organisms. Most bacteria range in size from 0.15 to 4 micrometers.
See more »Cell, in biology, the basic unit of all living matter. All forms of life consist of cells or groups of cells.
See more »Fertilization, the union of a male and a female sex cell to form a new individual.
See more »Globigerina, a genus of marine protozoans (one-celled organisms). The globigerina resembles the amoeba in structure, but has a spiny, multichambered shell composed of calcium carbonate.
See more »Irish Moss, or Carrageen, a seaweed found abundantly off the rocky Irish coast near Carrageen, and off eastern North America.
See more »Kelp, the common name for brown seaweeds. Kelp is especially plentiful off the coasts of temperate and colder regions, where it clings to submerged rocks by means of root-like holdfasts.
See more »Krebs Cycle (also called Citric Acid Cycle and Tricarboxylic Acid Cycle), a series of chemical reactions occurring in humans and many other animals.
See more »Nitrogen Cycle, the series of natural processes by which certain nitrogen-containing substances from air and soil are made useful to living things, are used by them, and are returned to the air and soil.
See more »Nucleic Acids, organic compounds found in the chromosomes of living cells and in viruses.
See more »Paramecium, a one-celled organism that lives in water. It is common in stagnant ponds, where it feeds on yeasts and bacteria.
See more »Protoplasm, living matter. It is generally colorless, nearly transparent, and slightly heavier than water.
See more »Protozoan, a one-celled organism. A protozoan is a eukaryote, an organism characterized by having its hereditary material enclosed in a nucleus bounded by a membrane.
See more »Rickettsia, a microorganism that causes various diseases. It is usually globe-shaped or rod-shaped.
See more »
