Urol Clin North Am.
Either of the two strands of a replicated chromosome, which are joined at the centromere. When the cell is not dividing, chromatin exists as a mass of very long, thin fibers that are not visible with a light microscope.
Chromista In some classification systems, a kingdom consisting of brown algae, golden algae, and diatoms.
Each chromosome consists of one very long DNA molecule and associated proteins. Also, see gene cloning. Most vitamins function as coenzymes in important metabolic reactions. Cofactors can be permanently bound to the active site or may bind loosely with the substrate during catalysis.
According to this theory, transpiration of a water molecule results in a negative below 1 atmosphere pressure in the leaf cells, inducing the entrance from the vascular tissue of another water molecule, which, because of the cohesive property of water, pulls with it a chain of water molecules extending up from the cells of the root tip.
An incomplete digestive tract has only one opening.
When a gradient exists, the ions or other chemical substances involved tend to move from where they are more concentrated to where they are less concentrated.
Conifers include pines, firs, redwoods, and other large trees.
Primary consumers are herbivores; higher-level consumers are carnivores.The second edition of Comprehensive Biotechnology continues the tradition of the first inclusive work on this dynamic field with up-to-date and essential entries on the principles and practice of biotechnology.
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While its critics dismiss Transcendental Meditation as quasi-religious nonsense its advocates insist it can enhance wellbeing Dr Maryanne Demasi examines the science to find out if this form of medi.
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Aug 31, · New Scientist published a story yesterday stating that rosacea – a common skin disease characterised by red blotches on one’s face – may be “caused” (more on this later) by “tiny bugs.