Biology 101 – Learn Online Free – Learn Science …

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1. INTRODUCTION - OVERVIEW - Biology as a science deals with the origin, history, process, and physical characteristics, of plants and animals:it includes botany, and zoology. A study of biology includes the study of the chemical basis of living organisms, DNA. Other related sciences include microbiology and organic chemistry.See the "Online Biology Book" an excellent reference!! The main difference between a lifeless clump of chemicals, and a living life form, composed of the same chemicals, is; Information and access to an energy source. The word science comes from a Latin word scientica, which means knowledge, or information. Science is a process of systematically gathering detailed information and gaining exact knowledge. That vital information includes; how the basic elements are organized and how they utilize energy. We do not know all the "life" information secrets but we are learning more every day.

The three biological life cycles, are; Zygotic meiosis, Sporic meiosis, and Gametic meiosis,

Amoeba - one basic life form.

Amoebas (and there are many different kinds) feed by phagocytosis (the engulfing and ingesting of foreign particles or waste matter by phagocytes)--they flow around their prey (usually a smaller cell) and engulf it. Organism that eat other organisms are usually called "consumers". The amoeba's cell membrane then fuses with itself, trapping the prey in a "food vacuole" where it will be digested.

Amoeba image courtesy of BioMEDIA ASSOCIATES

Famous scientist quote: "Those engaged in the arts and sciences, Most Gracious Emperor Charles, find many serious obstacles to the exact study and successful application of them. In the first place, no slight inconvenience results from too great separation beween branches of study which serve for the perfection of one art." Andreas Vesalius (1514 - 1564) wrote "The Anatomy of the Human Body" published in 1543.

Biologists study life over a wide range of scales:

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Biology 101 - Learn Online Free - Learn Science ...