(1).chemical reactions that (blank) energy often occur spontaneously?
(2).during a chemical reaction, chemical bonds are (blank)?
(3).biological catalysts, or enzymes, act by lowering the (blank) required for a reason?
(4).the reactants of an enzyme-catyzed reaction are known as (blank)?
(5).how are these related? catalyst, enzyme, activation energy, substrate.
(6).how are these related? reactant, product, chemical reaction, catalyst.
(7).most enzymes in the human body work best at 37degreesC. imagine scientists have discovered an enzyme in the body that works best at 39degreesC. what process or functions might this enzyme be involved in?
(8).protons and neutrons together form the (blank) which is set at the center of the atom.
(9).a pure substance that consists entirely of one type of atom is called a(an) (blank)?
(10).a chemical (blank) is a substance formed by the combination of two or more elements in definite proportions?
(11).the 2 main types of chemical bonds are what?
2006-10-03
11:17:12
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3 answers
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asked by
Anonymous