The Chemistry of Life Kassidy Burnside

"Nature is not neatly packaged into the individual natural sciences--biology, chemistry, physics, and so forth. Biologists specialize in the study of life, but organisms and their environments are natural systems to which the concepts of chemistry and physics apply." (Biology in Focus, page 19)

"Hydrogen bonding vies water properties that help make life possible on earth." (Biology in Focus, page 29)

Xylem and Phloem
Hydrogen bonds between water molecules
chemistry in life

Osmosis: when molecules of a solvent pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, equalizing the concentrations on each side of the membrane.

Chlorophyll: a green pigment in plants and cyanobacteria that absorbs light to make energy for photosynthesis.

Photosynthesis: the conversion of light energy absorbed by chlorophyll into nutrients in autotrophs.

Cellular Respiration: a process that generates most of the cell's energy by oxidizing organic compounds to produce energy

Aquaporins: transport proteins, which facilitate transmembrane water transportation. They are channels that open and close to affect the rate of osmosis across the membrane.

An example of the chemistry of life is the symbiosis of mycorrhizae. In mycorrizae, host plants provide the fungus on them with sugar, and in turn the fungus increases root surface area to absorbs more water and nutrients. Mycorrhizae also stimulates root growth and secretes antibiotics.

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