A protein that accelerates the rate of chemical reactions Enzymes are catalysts that promote reactions repeatedly, without being damaged by the reactions
biological catalyst; protein that assists in a biological reaction without being used up in the reaction itself
A protein that encourages a biochemical reaction, usually speeding it up Organisms could not function if they had no enzymes 1
A protein that acts as a catalyst, speeding the rate at which a biochemical reaction proceeds but not altering the direction or nature of the reaction
A protein that catalyzes a biochemical reaction, usually speeding it up Enzymes are vital components of any living organism
A protein produced by living cells that regulates the speed of the chemical reactions that are involved in the metabolism of living organisms, without itself being altered in the process Also called a biological catalyst
Protein catalyst which drives chemical reactions within a cell Enzymes display a high degree of specificity with regard to both the substrate on which they act and the type of reaction they catalyze Enzymes may also be introduced from outside the cell to cause biochemical reactions
a protein involved in an important biochemical reaction in the body A defective enzyme can be the result of a mutated gene
A protein that speeds up a chemical reaction Enzymes do their work without being changed or used up in the process
A protein or protein-based molecule that speeds up chemical reactions occurring in living things Enzymes act as catalysts for a single reaction, converting a specific set of reactants into specific products
An unorganized or unformed ferment, in distinction from an organized or living ferment; a soluble, or chemical, ferment
A protein that acts as a catalyst to speed the rate of a biochemical reaction but does not alter the rection's direction or nature
A protein produced by living cells that can catalyze a specific organic reaction (2)
Proteins that regulate the chemical reactions inside every living cell and organism For example, saliva contains an enzyme (called amylase) that helps us to digest the starch in ourfood
A protein that can speed up a specific chemical reaction without being changed or consumed in the process
Indefinite article; used when the noun may refer to one of several possibilities. An egg could be any of several eggs, while the egg refers to a specific egg (already mentioned or known)
One of two aliens that appeared in SailormoonR She disguised herself as Ginga Natsumi and attended Juban Junior High School She had a crush on Chiba Mamoru
After Newton The period of time that has elapsed since the cancellation of the Newton Generally agreed to be any point after February 27th, 1998 AN is also an abbreviation for the Action Names software package See also BN and DN Source: NTLK
A young Alan undergoing training with Tywe All young Alan are given a name without the adult appellation "we" This is gained when the young Alan is fully trained and is accepted as an adult
Contains all temperature telemetry points and is most useful when studying the thermal trends of the SIs and vehicle The aft-shroud light shield temperatures are reported in AN format and are currently the best indicators in determining the periodic change in the OTA focus (breathing) AN format does contain the S/C velocity and position vectors
an WEAK STRONG An is used instead of `a', the indefinite article, in front of words that begin with vowel sounds. see also a. Netherlands Antilles (in Internet addresses). airman, Navy. Word History: The forms of the indefinite article are good examples of what can happen to a word when it becomes habitually pronounced without stress. An is in fact a weakened form of one; both an and one come from Old English ān "one." In early Middle English, besides representing the cardinal numeral "one," ān developed the special function of indefinite article, and in this role the word was ordinarily pronounced with very little or no stress. Sound changes that affected unstressed syllables elsewhere in the language affected it also. First, the vowel was shortened and eventually reduced to a schwa (ə). Second, the n was lost before consonants. This loss of n affected some other words as well; it explains why English has both my and mine, thy and thine. Originally these were doublets just like a and an, with mine and thine occurring only before vowels, as in Ben Jonson's famous line "Drink to me only with thine eyes." By the time of Modern English, though, my and thy had replaced mine and thine when used before nouns (that is, when not used predicatively, as in This book is mine), just as some varieties of Modern English use a even before vowels (a apple). And if; if. W1S1 used when the following word begins with a vowel sound a
In such expressions as "twice an hour," "once an age," a shilling an ounce (see 2d A, 2), it has a distributive force, and is equivalent to each, every