LSU BIOL 1201 EXAM 1 QUESTIONS & ANSWERS
Hypothesis - Answers :a small statement that you can test
Theory - Answers :broader in scope than a hypothesis and can lead to a new testable
hypothesis; supported by a large body of evidence in comparison to a hypothesis
Deductive - Answers :Testing what you think is true; Design, Test, Conclusion
Inductive - Answers :making observations and solution from that observation; All
observations have the same result.
Valence - Answers :Outer shell of electrons; the number of unpaired electrons in the
valence shell of an atom is generally equal to its valence (the # of covalent bonds it can
form)
Atomic mass - Answers :the atom's total mass, which can be approximated by the mass
number
Mass number - Answers :the sum of protons and neutrons in the nucleus
Atomic number - Answers :the number of protons in an element
Isotopes - Answers :two atoms of an element that differ in the number of neutrons
Radioactive isotopes - Answers :decay spontaneously, giving off particles and energy
Hydrogen bonds - Answers :forms when a hydrogen atom covalently bonded to one
electronegative atom is also attracted to another electronegative atom
covalent bonds - Answers :Strongest bonds in organisms are _______ ________ that
form a cell's molecules.
Weak chemical bonds - Answers :(ionic and hydrogen bonds) confer shape of large
molecules and help molecules interact
Chemical Equilibrium –
, Answers :reached when the forward and reverse reaction rates are equal
Van der Waals interactions - Answers :attractions between molecules that are close
together as a result of these charges
Ionic bonds form between - Answers :Metals and non metals
Nonpolar covalent bond - Answers :atoms share the electron equally
Polar covalent bond - Answers :one atom is more electronegative, and the atoms don't
share the electron equally
Electronegativity - Answers :an atom's attraction for the electrons in a covalent bond
Carbon skeletons - Answers :carbon chains that form the skeletons of most organic
molecules
List the three types of isomers. - Answers :structural, cis-trans isomers, and
enantiomers
Isomers - Answers :compounds with the same molecular formula but different structures
and properties
Structural isomers - Answers :different covalent arrangements of their atoms
Cis-trans isomers - Answers :the same covalent bonds but differ in their spatial
arrangements
Enantiomer isomers - Answers :mirror images of each other
Functional groups - Answers :the components of organic molecules that are most
commonly involved in chemical rxns
List the 7 functional groups. - Answers :Hydroxyl, carbonyl, carboxyl, amino, sulfhydryl,
phosphate, and methyl
Hypothesis - Answers :a small statement that you can test
Theory - Answers :broader in scope than a hypothesis and can lead to a new testable
hypothesis; supported by a large body of evidence in comparison to a hypothesis
Deductive - Answers :Testing what you think is true; Design, Test, Conclusion
Inductive - Answers :making observations and solution from that observation; All
observations have the same result.
Valence - Answers :Outer shell of electrons; the number of unpaired electrons in the
valence shell of an atom is generally equal to its valence (the # of covalent bonds it can
form)
Atomic mass - Answers :the atom's total mass, which can be approximated by the mass
number
Mass number - Answers :the sum of protons and neutrons in the nucleus
Atomic number - Answers :the number of protons in an element
Isotopes - Answers :two atoms of an element that differ in the number of neutrons
Radioactive isotopes - Answers :decay spontaneously, giving off particles and energy
Hydrogen bonds - Answers :forms when a hydrogen atom covalently bonded to one
electronegative atom is also attracted to another electronegative atom
covalent bonds - Answers :Strongest bonds in organisms are _______ ________ that
form a cell's molecules.
Weak chemical bonds - Answers :(ionic and hydrogen bonds) confer shape of large
molecules and help molecules interact
Chemical Equilibrium –
, Answers :reached when the forward and reverse reaction rates are equal
Van der Waals interactions - Answers :attractions between molecules that are close
together as a result of these charges
Ionic bonds form between - Answers :Metals and non metals
Nonpolar covalent bond - Answers :atoms share the electron equally
Polar covalent bond - Answers :one atom is more electronegative, and the atoms don't
share the electron equally
Electronegativity - Answers :an atom's attraction for the electrons in a covalent bond
Carbon skeletons - Answers :carbon chains that form the skeletons of most organic
molecules
List the three types of isomers. - Answers :structural, cis-trans isomers, and
enantiomers
Isomers - Answers :compounds with the same molecular formula but different structures
and properties
Structural isomers - Answers :different covalent arrangements of their atoms
Cis-trans isomers - Answers :the same covalent bonds but differ in their spatial
arrangements
Enantiomer isomers - Answers :mirror images of each other
Functional groups - Answers :the components of organic molecules that are most
commonly involved in chemical rxns
List the 7 functional groups. - Answers :Hydroxyl, carbonyl, carboxyl, amino, sulfhydryl,
phosphate, and methyl
