BIO 212 Distance Lectures Exam Study Guide With
Complete Solutions
a virus isn't considered to be alive because... - ANSWER it can't carry out metabolism
cells make up ___ living things - ANSWER all living things
coated vesicles are important in.... - ANSWER endocytosis (active transport of
molecules into the cell by engulfing the molecule in the membrane)
interstitial fluid is found surrounding... - ANSWER all active cells
when someone loses weight, where does that mass go? - ANSWER exhaled as gas
plant organs are defined by ____ and animal organs are defined by___ - ANSWER - the
location at which they are created
- function
the graph of internal conditions of an animal that is a conformer has a line with a ___
slope than that of a regulator - ANSWER larger (regulators have horizontal slope, slope
= 0, while conformers have a diagonal slow ~1)
there is a higher concentration of cations outside the cell than inside the cell. a cation is
allowed to flow through the membrane. this creates... - ANSWER a positive membrane
potential
enzymes... - ANSWER - do not influence the direction of biochemical reactions
- influence the rate of biochemical reactions
- change shape during reactions
, - return to their original state once reaction is complete
- reduce activation energy of a reaction
different concentrations of substrate have graphs with.... - ANSWER - different Vmax
values
- different slopes of the ascending portion of the curve at low substrate concentrations
- equivalent Km values
conformers use ___ to regulate ___ - ANSWER conformers use metabolism to regulate
temperature
all negative feedback loops... - ANSWER shut themselves off
the only temperature regulation mechanism that doesn't show up as a cost of heating or
cooling is... - ANSWER vasodilation and vasoconstriction
uncoupler protein activity occurs when temperatures are... - ANSWER below the lower
critical temperature
an animal carrying out metabolic thermogenesis has... - ANSWER a relatively increased
PFK activity and a reduced ATP synthesis rate
an inhibitor that reduces the Vmax of an enzyme by binding at the active site is a..... -
ANSWER direct non-competitive inhibitor
cells raise metabolism without increasing ATP usage by... - ANSWER opening proton
channels in mitochondria (channel is called an uncoupler protein)
what is the effect of metabolic thermogenesis (aka activity of the uncoupler protein) on
the activity of phosphofructokinase (PFK)? - ANSWER increases PFK activity
Complete Solutions
a virus isn't considered to be alive because... - ANSWER it can't carry out metabolism
cells make up ___ living things - ANSWER all living things
coated vesicles are important in.... - ANSWER endocytosis (active transport of
molecules into the cell by engulfing the molecule in the membrane)
interstitial fluid is found surrounding... - ANSWER all active cells
when someone loses weight, where does that mass go? - ANSWER exhaled as gas
plant organs are defined by ____ and animal organs are defined by___ - ANSWER - the
location at which they are created
- function
the graph of internal conditions of an animal that is a conformer has a line with a ___
slope than that of a regulator - ANSWER larger (regulators have horizontal slope, slope
= 0, while conformers have a diagonal slow ~1)
there is a higher concentration of cations outside the cell than inside the cell. a cation is
allowed to flow through the membrane. this creates... - ANSWER a positive membrane
potential
enzymes... - ANSWER - do not influence the direction of biochemical reactions
- influence the rate of biochemical reactions
- change shape during reactions
, - return to their original state once reaction is complete
- reduce activation energy of a reaction
different concentrations of substrate have graphs with.... - ANSWER - different Vmax
values
- different slopes of the ascending portion of the curve at low substrate concentrations
- equivalent Km values
conformers use ___ to regulate ___ - ANSWER conformers use metabolism to regulate
temperature
all negative feedback loops... - ANSWER shut themselves off
the only temperature regulation mechanism that doesn't show up as a cost of heating or
cooling is... - ANSWER vasodilation and vasoconstriction
uncoupler protein activity occurs when temperatures are... - ANSWER below the lower
critical temperature
an animal carrying out metabolic thermogenesis has... - ANSWER a relatively increased
PFK activity and a reduced ATP synthesis rate
an inhibitor that reduces the Vmax of an enzyme by binding at the active site is a..... -
ANSWER direct non-competitive inhibitor
cells raise metabolism without increasing ATP usage by... - ANSWER opening proton
channels in mitochondria (channel is called an uncoupler protein)
what is the effect of metabolic thermogenesis (aka activity of the uncoupler protein) on
the activity of phosphofructokinase (PFK)? - ANSWER increases PFK activity
