IB 150 Exam 1 IB 150 Exam 1 questions and
answers
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Terms in this set (72)
Organic molecules, organelle, cell, tissue, organ,
organization of organisms
organ system, organism
First law of Energy can be transferred and transformed, but it
thermodynamics cannot be created or destroyed.
Under constant Products have higher entropy than reactants
temperature and pressure,
reactions tend to be
spontaneous when
Any reaction that Thermodynamically favorable and occurs
decreases DG is spontaneously
Most metabolic reactions Endergonic
are
Adding a phosphate group from ATP to the substrate
often results in unstable, high energy bonds that raise
the potential energy of the substrate, providing
Phosphorylation
energy for further reactions
changes the reaction from endergonic to exergonic
Q Diffusion rate
Difference in partial pressure concentrations between
Phigh-plow
two locations
, A Area of gas exchange
Diffusion coefficient
D depends on permeability of medium for a given
substance and temp
L Diffusion length between two locations
Diffusion ineffective over >1 mm in water
distances
Which variables of Fick's L &A
law are optimized in
mammalian lungs?
Many organisms minimize Mass flow
length of diffusion path
and rely on _ for gas
transport
Distance of diffusion Exchange across single cells lining capillary walls
limited to
Does the design of fish Unidirectional
gills allows a unidirectional
or bidirectional flow of
water across gills
Tidal flow Mammalian lungs need, breathing in and out
Highly oxygenated air passes through the parabronchi
Countercurrent air flow
both on inhaling and exhaling
The role of hemoglobin is Hemoglobin absorbs oxygen from plasma, reducing
to maintain a positive plasma
concentration gradient.
How is this accomplished
in pulmonary circuit?
Oxygen is _ bound to Reversibly
heme groups held by the
hemoglobin protein
answers
Save
Terms in this set (72)
Organic molecules, organelle, cell, tissue, organ,
organization of organisms
organ system, organism
First law of Energy can be transferred and transformed, but it
thermodynamics cannot be created or destroyed.
Under constant Products have higher entropy than reactants
temperature and pressure,
reactions tend to be
spontaneous when
Any reaction that Thermodynamically favorable and occurs
decreases DG is spontaneously
Most metabolic reactions Endergonic
are
Adding a phosphate group from ATP to the substrate
often results in unstable, high energy bonds that raise
the potential energy of the substrate, providing
Phosphorylation
energy for further reactions
changes the reaction from endergonic to exergonic
Q Diffusion rate
Difference in partial pressure concentrations between
Phigh-plow
two locations
, A Area of gas exchange
Diffusion coefficient
D depends on permeability of medium for a given
substance and temp
L Diffusion length between two locations
Diffusion ineffective over >1 mm in water
distances
Which variables of Fick's L &A
law are optimized in
mammalian lungs?
Many organisms minimize Mass flow
length of diffusion path
and rely on _ for gas
transport
Distance of diffusion Exchange across single cells lining capillary walls
limited to
Does the design of fish Unidirectional
gills allows a unidirectional
or bidirectional flow of
water across gills
Tidal flow Mammalian lungs need, breathing in and out
Highly oxygenated air passes through the parabronchi
Countercurrent air flow
both on inhaling and exhaling
The role of hemoglobin is Hemoglobin absorbs oxygen from plasma, reducing
to maintain a positive plasma
concentration gradient.
How is this accomplished
in pulmonary circuit?
Oxygen is _ bound to Reversibly
heme groups held by the
hemoglobin protein
