5 Written Questions

1. A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.
2. A molecule that has electrically charged areas.
3. weak bond formed by the attraction of positively charged hydrogen atoms to negatively charged atoms
4. polysaccharide in animal cells that consists of many glucose monomers. for energy
5. negatively charged particle of an atom

5 Matching Questions

1. isotope
2. radioisotope
3. cholesterol
4. ion
5. monosaccharide

1. a atoms of the same element that have different numbers of neutrons in the nucleus
2. b steroid molecule present in the plasma membranes of animal cells
3. c An electrically charged atom that has gained or lost electrons
4. d single sugar molecule
5. e an unstable isotope of an element, which undergoes radioactive decay

5 Multiple Choice Questions

1. has a high pH, accepts H(+) ions
   1. ion
   2. atom
   3. base
   4. acid
2. A substance that cannot be broken down into simpler substances
   1. element
   2. electron
   3. polymers
   4. enzymes
3. property of a molecule with oppositely charged ends. because of it, water is able to dissolve many different substances
   1. lipid
   2. polymers
   3. polarity
   4. proton
4. long chains of monomers
   1. polymers
   2. polarity
   3. monomers
   4. enzymes
5. carbon-based molecule
   1. organic molecule
   2. macromolecule
   3. molecule
   4. polar molecule

5 True/False Questions

1. scientific method → bond formed by the TRANSFERING of electrons from one atom to another

   True        False

2. polypeptide → A polymer (chain) of many amino acids linked together by peptide bonds.

   True        False

3. fatty acid → basic building blocks of protein molecules

   True        False

4. hydrophobic → "water hating"

   True        False

5. atom → smallest particle of an element

   True        False