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20 Cards in this Set

  • Front
  • Back
the atomic number of an element
equals the number of protons in an atom
the atomic weight of an element
equals the number of netrons plus the number of protons
which of the following statements about the isotopes is NOT true
they all have the same number of neutrons
which of the following statements about covalent bonds is NOT true
only a single covalent bond can form between two atoms
hydrophobic interactions
can hold two nonpolar molecules together
which of the following statremnts about water is NOT true
it realeases a large amount of heat when changing from liquid into vapor
the reaction HCL-H+ + CL- in the humal stomach is an example of the
formation of ions by dissolving an acid
the hydrogen bond between two water molecules arises because water is
when the table salt(NaCl) is added to water
Na+ and Cl- ions are separed
The three most abundant elements in a human skin cell are?
Carbon, hydrogen, oxygen
the most abundant molecule in the cell
all lipids are
more soluble in nonploar solvents than in water
all carbs
consist of one or more simple sugars
which of the following is not a carb
all proteins
have quaternary structures
which of the following statements about the primary structure of a prtoein is not ture
it may be branched
the amino acid leucine
is hydrophillic
the qyaternary stucture of a protein
consists of four subunits
all nucleic acids
are double stranded
which of the following satements about condensation reactions is not true
polysaccharide synthesis results from them