Biology







The Benefits of Bacteria

Microorganisms were completely unknown to science until 1676 when Antonie van Leeuwenhoek observed bacteria for the first time on a hand-crafted single-lens microscope. Another 200 years would pass before Louis Pasteur provided the first evidence supporting the germ theory of…
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Fundamental Properties of Life

Fundamental characteristics of life include several components.  For the purpose of this article all life forms will be called organisms. Organisms consist of at least one cell, and fall into one of six kingdoms. Plants, animal and fungi are three…
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Structure of Algae

Algae are a diverse group of photosynthetic organisms, ranging from unicellular to multicellular eukaryotic organizations. Algae are classified into the kingdom protista, lacking cellular differentiation into tissues. All algae possess the green pigment chlorophyll a, although other pigments can be…
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Growth Hormones in Plants

Growth hormones in plants are the chemicals that determine and regulate growth in plants. Plant growth hormones are defined as “Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities.” These hormones…
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