BIO 168 EXAM 1 QUESTIONS &
ANSWERS(RATED A+)
Isotopes - ANSWERSame element (or atom), but a dufferent # of neutrons ...
unstable and radioactive
Ions - ANSWERSmall version of atom with same chemical &physical properties.
They are positive (if they lose an electron) or negative (if they gain an electron)
Covalent bonds - ANSWERExits between atoms that share electrons to form a
molecule. Have Double, Non polar, and polar bond .Overlapping outermost shells
indicate that atoms are sharing electrons.
Ionic bond - ANSWERBetween 2 oppositely charged atoms, atoms gain or lose an
electron
96% of the body - ANSWERCarbon, hydrogen, oxygen, nitrogen
Water - ANSWERIs held by hydrogen bonds (a week covalent bond). It is also a
polar (charged).
Water has - ANSWERA high heat capacity, high heat of vaporization, has polar
solvent properties, is reactive, cushions.
Water (H2O) - ANSWERBreak down into hydrogen (H+) and hydroxide (OH-)
Buffers - ANSWERResist changes in pH
Carbohydrates - ANSWERmonomer (building block): Monosaccharides . Function :
short term energy storage.
systemic - ANSWERof or pertaining to the entire body; relating to a system or
systems
What is the hierarchal organization of the body - ANSWERatom, molecules, cell,
tissue, organ, organ system, organism
What is the cell theory? - ANSWERAll living things are made up of cells, cells are the
basic units of structure and function in living things, new cells are produced from
existing cells
Lipids - ANSWERMonomer (building block): fatty acids & glycerol. Function: energy
(most per g). Class: Triglycerides, phospholipids, steroids.
Proteins - ANSWERmonomer (building block) : amino acids. Function: enzymes,
receptors, plasma membrane
, Nucleus acids - ANSWERmonomer (building block): Nucleotides. Function :store
genetic info. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and
phosphorus
Atom - ANSWERIs made up of proteins and neutrons located in a central nucleus
The nucleus - ANSWERIs surround by electrons
Atoms mass number - ANSWERIs the sum of the numbers of protons and neutrons
in its nucleus
Isotopes - ANSWERVariant forms of an elements. Neutrons are different.
Compound - ANSWERA chemical substance composed of atoms of two or more
elements
Molecules - ANSWERA chemical structure consisting of atoms held together by
covalent bond.
Cation - ANSWERA positively charged ion
Anions - ANSWERare negatively charged ions
Which of these characteristics of life help maintain homeostasis when environmental
conditions changes? - ANSWERResponsiveness
A body temperature of 98.6 degree F (37 degrees C) is the ____ for body
temperature - ANSWERSet point
Which of these processes illustrates positive -feedback - ANSWERIncrease in
uterine contractions when uterine stretching increases during childbirth
According to the concept of negative feedback, a slight increase in blood pressure
causes - ANSWERA decrease in heart rate
A cut across the long axis of an organ made at other than a right angle is called an -
ANSWEROblique section
In which quadrant of the abdomen would stomach pain likely be felt? -
ANSWERUpper left
Which of these structures is not found in the mediastinum - ANSWERDiaphragm
Serous membranes - ANSWERproduce a lubricating film of fluid
What are the characteristics of life? - ANSWERMovement, responsiveness, growth,
reproduction, respiration, digestion, absorption, circulation, assimilation, and
excretion.
ANSWERS(RATED A+)
Isotopes - ANSWERSame element (or atom), but a dufferent # of neutrons ...
unstable and radioactive
Ions - ANSWERSmall version of atom with same chemical &physical properties.
They are positive (if they lose an electron) or negative (if they gain an electron)
Covalent bonds - ANSWERExits between atoms that share electrons to form a
molecule. Have Double, Non polar, and polar bond .Overlapping outermost shells
indicate that atoms are sharing electrons.
Ionic bond - ANSWERBetween 2 oppositely charged atoms, atoms gain or lose an
electron
96% of the body - ANSWERCarbon, hydrogen, oxygen, nitrogen
Water - ANSWERIs held by hydrogen bonds (a week covalent bond). It is also a
polar (charged).
Water has - ANSWERA high heat capacity, high heat of vaporization, has polar
solvent properties, is reactive, cushions.
Water (H2O) - ANSWERBreak down into hydrogen (H+) and hydroxide (OH-)
Buffers - ANSWERResist changes in pH
Carbohydrates - ANSWERmonomer (building block): Monosaccharides . Function :
short term energy storage.
systemic - ANSWERof or pertaining to the entire body; relating to a system or
systems
What is the hierarchal organization of the body - ANSWERatom, molecules, cell,
tissue, organ, organ system, organism
What is the cell theory? - ANSWERAll living things are made up of cells, cells are the
basic units of structure and function in living things, new cells are produced from
existing cells
Lipids - ANSWERMonomer (building block): fatty acids & glycerol. Function: energy
(most per g). Class: Triglycerides, phospholipids, steroids.
Proteins - ANSWERmonomer (building block) : amino acids. Function: enzymes,
receptors, plasma membrane
, Nucleus acids - ANSWERmonomer (building block): Nucleotides. Function :store
genetic info. macromolecules containing hydrogen, oxygen, nitrogen, carbon, and
phosphorus
Atom - ANSWERIs made up of proteins and neutrons located in a central nucleus
The nucleus - ANSWERIs surround by electrons
Atoms mass number - ANSWERIs the sum of the numbers of protons and neutrons
in its nucleus
Isotopes - ANSWERVariant forms of an elements. Neutrons are different.
Compound - ANSWERA chemical substance composed of atoms of two or more
elements
Molecules - ANSWERA chemical structure consisting of atoms held together by
covalent bond.
Cation - ANSWERA positively charged ion
Anions - ANSWERare negatively charged ions
Which of these characteristics of life help maintain homeostasis when environmental
conditions changes? - ANSWERResponsiveness
A body temperature of 98.6 degree F (37 degrees C) is the ____ for body
temperature - ANSWERSet point
Which of these processes illustrates positive -feedback - ANSWERIncrease in
uterine contractions when uterine stretching increases during childbirth
According to the concept of negative feedback, a slight increase in blood pressure
causes - ANSWERA decrease in heart rate
A cut across the long axis of an organ made at other than a right angle is called an -
ANSWEROblique section
In which quadrant of the abdomen would stomach pain likely be felt? -
ANSWERUpper left
Which of these structures is not found in the mediastinum - ANSWERDiaphragm
Serous membranes - ANSWERproduce a lubricating film of fluid
What are the characteristics of life? - ANSWERMovement, responsiveness, growth,
reproduction, respiration, digestion, absorption, circulation, assimilation, and
excretion.
