Name: Score:
49 Multiple choice questions
Definition 1 of 49
-Molecules are "pumped" against a concentration gradient at the expense of energy (ATP)
Depolarization
Facilitated Diffusion
Simple/passive Diffusion
Active Transport/Primary
Term 2 of 49
Undershoot
-Major mechanisms of transport across the cell membrane
-Simple diffusion
-Facilitated diffusion
-Primary Active Transport
-Secondary Active Transport
-Endocytosis
-Also called hyperpolarizing after-potential
-The portion of the AP, following repolarization, where the membrane potential is actually
more negative than at rest.
-"Maintenance of nearly constant conditions in the internal environment"
-All organs and tissues involved
EX: kidneys maintain ion concentrations,
respiratory-- O2 and excretion of CO2
-Control systems control ICF and ECF functions
EX: regulation of O2 and CO2
(equilibrium potential of that ion)
-The diffusion potential level across a membrane that exactly opposes the net diffusion of a
particular ion through the membrane.
,Definition 3 of 49
-lipid bilayer
-hydrophilic (charged) head
-hydrophobic tail (not charged)
Cell Membrane Composition
Resting Membrane Potential
Cell Membrane
Active Transport/Primary
Definition 4 of 49
promotes stability; most of the time it's a good thing. Promotes homeostasis. End result is different
than initiating stimulus
EX: hyperglycemia- pancreas will release insulin---> takes glucose back into the cells--->
decreases blood glucose level
*started with elevated BGL, ended with decrease BGL
Positive Feedback
Undershoot
Osmosis
Negative Feedback
Definition 5 of 49
1. Membrane Transport
2. Synthesis of chemical compounds
3. Mechanical work
Active Transport/Secondary
Active Transport/Primary
Cell Membrane Composition
Uses of ATP for Cellular Function
, Definition 6 of 49
-Active Transport Method
-Instead of passing through the cell membrane, a substance is engulfed by the cell
-The cell surrounds the substance with part of the cell membrane
Endocytosis
Osmosis
Homeostasis
Undershoot
Definition 7 of 49
1. (co-porters) substance is transported in the same direction as the "driver" ion (Na+)
-Moving in the same direction
*Na+ and AA
*Na+ and glucose
*Na+ and 2 HCO3-
-going from outside cell to inside cell
Factors that affect net rate of diffusion
Secondary Active Transport/ Co-transport
Sodium Potassium Pump Explained
Uses of ATP for Cellular Function
49 Multiple choice questions
Definition 1 of 49
-Molecules are "pumped" against a concentration gradient at the expense of energy (ATP)
Depolarization
Facilitated Diffusion
Simple/passive Diffusion
Active Transport/Primary
Term 2 of 49
Undershoot
-Major mechanisms of transport across the cell membrane
-Simple diffusion
-Facilitated diffusion
-Primary Active Transport
-Secondary Active Transport
-Endocytosis
-Also called hyperpolarizing after-potential
-The portion of the AP, following repolarization, where the membrane potential is actually
more negative than at rest.
-"Maintenance of nearly constant conditions in the internal environment"
-All organs and tissues involved
EX: kidneys maintain ion concentrations,
respiratory-- O2 and excretion of CO2
-Control systems control ICF and ECF functions
EX: regulation of O2 and CO2
(equilibrium potential of that ion)
-The diffusion potential level across a membrane that exactly opposes the net diffusion of a
particular ion through the membrane.
,Definition 3 of 49
-lipid bilayer
-hydrophilic (charged) head
-hydrophobic tail (not charged)
Cell Membrane Composition
Resting Membrane Potential
Cell Membrane
Active Transport/Primary
Definition 4 of 49
promotes stability; most of the time it's a good thing. Promotes homeostasis. End result is different
than initiating stimulus
EX: hyperglycemia- pancreas will release insulin---> takes glucose back into the cells--->
decreases blood glucose level
*started with elevated BGL, ended with decrease BGL
Positive Feedback
Undershoot
Osmosis
Negative Feedback
Definition 5 of 49
1. Membrane Transport
2. Synthesis of chemical compounds
3. Mechanical work
Active Transport/Secondary
Active Transport/Primary
Cell Membrane Composition
Uses of ATP for Cellular Function
, Definition 6 of 49
-Active Transport Method
-Instead of passing through the cell membrane, a substance is engulfed by the cell
-The cell surrounds the substance with part of the cell membrane
Endocytosis
Osmosis
Homeostasis
Undershoot
Definition 7 of 49
1. (co-porters) substance is transported in the same direction as the "driver" ion (Na+)
-Moving in the same direction
*Na+ and AA
*Na+ and glucose
*Na+ and 2 HCO3-
-going from outside cell to inside cell
Factors that affect net rate of diffusion
Secondary Active Transport/ Co-transport
Sodium Potassium Pump Explained
Uses of ATP for Cellular Function
