Encyclopedia of Biology

Lewis acid Amolecular entity that is an electron- pair acceptor and therefore is able to react with a LEWIS BASEtoform a LEWIS A ...

Some lichens are held on their substrate by medullary fungal hyphae, but many foliose lichens have a lower cortex and special st ...

light microscope Acommon laboratory instrument that uses optics to bend visible light to magnify images ofspecimens placed on an ...

Lipmann, Fritz Albert(1899–1986) GermanBio- chemist Fritz Albert Lipmann was born on June 12, 1899, in Koenigsberg, Germany, to ...

liverwort A green photosynthetic bryophyte belong- ing to the family Hepaticae (division Hepatophyta). A small, simple plant tha ...

long-day plant Aplant affected by photoperiodism. Aplant that needs more light than dark for flowering. Long-day plants are spin ...

blood, while carbon dioxide (CO 2 ) diffuses from the blood into the lungs. Gas is transported in the blood, and thecirculatory ...

Macleod, John James Richard (1876–1935) Scot- tishPhysiologist John James Richard Macleod was bornon September 6, 1876, in Cluny ...

the mixing of electronic states. MCD is frequently used in combination with absorption and CD studies toaffect electronic assign ...

Mammalia A class of warm-blooded animals that have three characteristics not shared by other animals: body hair; the production ...

prepared a thesis for his doctorate on the embryonic development of the cuttle-fish Sepiola and the crus- tacean Nelalia. In 188 ...

meiosis The reductive division of diploid cells in ovaries and testes that produce gametes (sperm and ova). Two divisions with s ...

to aslight excess of positive ions on one side and of negative ions on the other; potential inside a membrane minus the potentia ...

urogenital structures; and the hypomere, which differ- entiate into limbs, peritoneum, gonads, heart, blood vessels, and mesente ...

metamorphosis with no pupa and with young imma- ture forms looking similar to the adult minus wings. See alsoINCOMPLETE METAMORP ...

funnel-shaped opening, collects body fluids and nitrogenous compounds and discharges at the other end, the nephridiopore. Also r ...

formate, methanol, methylamine, carbon monoxide, or acetate) as electron donors for the reduction of carbon dioxide to methane. ...

organelles, chromosomes, as well as the cell itself. Microtubules also form the spindle fibers of mitosis. microvillus Very smal ...

inepithelial cells of the renal tubules. This results in retention of sodium and loss of potassium. Some also possess varying de ...

mitochondrial matrix Each mitochondrion is sur- rounded by a double membrane. The aqueous matrix is bounded within the inner mem ...