biology-dictionary_11-06-2009

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Lipid
One of a family of compounds, including fats, phospholipids, and steroids, that are insoluble
in water.
Lipochondria / idiosomes
Temporay storage vacuoles of lipids found in the Golgi apparatus.
Lipoprotein
A protein bonded to a lipid; includes the low-density lipoproteins (LDLs) and high-density
lipoproteins (HDLs) that transport fats and cholesterol in blood.
Lipopolysaccharides
Lipopolysaccharide is a large molecule consisting of a lipid and a polysaccharide joined by a
covalent bond.
Liquids
A substance that flows readily in its natural state.
Liver
The bile-secreting organ of an animal, used as food. A dark reddish brown.
Locomotor
Of or relating to locomotion
Locus
A particular place along the length of a certain chromosome where a given gene is located.
Logistic population growth
A model describing population growth that levels off as population size approaches carrying
capacity.
Long-day plant
A plant that flowers, usually in late spring or early summer, only when the light period is
longer than a critical length.
Loop of Henle
The long hairpin turn, with a descending and ascending limb, of the renal tubule in the
vertebrate kidney; functions in water and salt reabsorption.
Lumen
The cavity of a tubular structure, such as endoplasmic reticulum or a blood vessel.

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