PLZ HELP ME
1. The positively charged particle in an atom is the
a. neutron. c. proton.<...
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PLZ HELP ME
1. The positively charged particle in an atom is the
a. neutron. c. proton.
b. ion. d. electron.
2. Two or more different atoms are combined in
definite proportions in any
a. symbol. c. element.
b. isotope. d. compound.
3. A covalent bond is formed by the
a. transfer of electrons. c. gaining of electrons.
b. sharing of electrons. d. losing of electrons.
4. When you shake sugar and sand together in a test
tube, you cause them to form a
a. compound. c. solution.
b. mixture. d. suspension.
5. A compound that produces hydrogen ions in
solution is a(an)
a. salt. c. base.
b. acid. d. polymer.
6. In polymerization, complex molecules are formed
by the joining together of
a. macromolecules. c. polymers.
b. carbohydrates. d. monomers.
8. Proteins are polymers formed from
a. lipids.
b. carbohydrates.
c. amino acids.
d. nucleic acids.
9. An enzyme speeds up a reaction by
a. lowering the activation energy.
b. raising the activation energy.
c. releasing energy.
d. absorbing energy.
10. In a chemical reaction, a reactant binds to an
enzyme at a region known as the
a. catalyst.
b. product.
c. substrate.
d. active site.
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