Bio 210 lecture exam 1 questions and answers Gross Anatomy
examine structures that can be seen with unaided eye
structural organization of the human body:
chemical (atoms), cellular (cells), tissue (tissue), organ (organs), organ system (systems within organs), organism (human body)
dor...
Anatomy - answersthe structure or parts, taken as a whole
Physiology - answersthe study of how the body and its parts work or function
Subdivisions of Anatomy - answersgross/macroscopic, microscopic, developmental
Principle of Complementarity - answersfunction always reflects structure a structure's
function depends on its specific form
Homeostasis - answersA tendency to maintain a balanced or constant internal state; the
regulation of any aspect of body chemistry, such as blood glucose, around a particular
level
positive feedback - answersFeedback that tends to magnify a process or increase its
output.
negative feedback - answersa mechanism of response in which a stimulus initiates
reactions that reduce the stimulus
Matter - answersAnything that has mass and takes up space
Energy - answersthe capacity to do work
chemical element - answerssimplest form of matter to have unique chemical properties
atomic number - answersthe number of protons in the nucleus of an atom
atomic mass - answersthe weighted average of the masses of the isotopes of an
element
, atomic weight - answersprotons + neutrons
Isotopes - answersAtoms of the same element that have different numbers of neutrons
Radioisotopes - answersIsotopes that have unstable nuclei and undergo radioactive
decay.
Molecule - answerstwo or more atoms held together by covalent bonds
Compound - answerssubstance formed by the chemical combination of two or more
elements in definite proportions
Mixture - answersA combination of two or more substances that are not chemically
combined
Solution - answersA homogeneous mixture of two or more substances
Colloid - answersA mixture containing small, undissolved particles that do not settle out.
Suspension - answersA mixture in which particles can be seen and easily separated by
settling or filtration
electrons role in chemical bonding - answersRelationship of electrons in outermost shell
octet rule - answersStates that atoms lose, gain or share electrons in order to acquire a
full set of eight valence electrons
ionic bond - answersFormed when one or more electrons are transferred from one atom
to another
covalent bond - answersA chemical bond that involves sharing a pair of electrons
between atoms in a molecule
hydrogen bond - answersweak attraction between a hydrogen atom and another atom
polar vs nonpolar covalent bonds - answersif the elements are the same, it will be
nonpolar H2
if the elements are differnt they are polar HCl
synthetic reaction anabolic - answersA+B-->AB
decomposition reaction catabolic - answersAB—> A+B a reaction in which a single
compound breaks down to form two or more simpler substances
exchange reaction - answersAB + CD --> AD + CB
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