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Quiz von tiwariashley, aktualisiert more than 1 year ago
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Erstellt von tiwariashley
vor etwa 9 Jahre
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Frage 1
Frage
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Antworten
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Cotransport (symport)
-
countertransport (antiport)
Frage 2
Frage
Which of the following are considered unassisted membrane transport mechanisms?
Antworten
-
simple diffusion
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Secondary Active Transport
Frage 3
Frage
Which of the following molecules are able to permeate a cell membrane?
Antworten
-
steroids
-
glucose
-
ions
-
methanol
-
complex amino acids
Frage 4
Frage
Crenation of a cell would be observed if it was placed in which of the following solutions?
Antworten
-
Hypotonic
-
Hypertonic
-
isotonic
-
both hypotonic and hypertonic
-
both isotonic and hypotonic
Frage 5
Frage
Which of the following constitutes Fick's law of diffusion?
Antworten
-
Lipid solubility of substance
-
Molecular weight of substance
-
distance a substance has to travel to cross the membrane
-
magnitude of the concentration gradient
-
surface area of the membrane
Frage 6
Frage
_____________ occurs when the response made by the effector amplifies the changes in the controlled variable cause by a stimulus
Antworten
-
Negative feedback mechanism
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positive feedback mechanism
-
Feed forward Mechanism
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Allostasis
-
Positive feedback and feed forward mechanism
Frage 7
Frage
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Antworten
-
Simple diffusion
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Secondary Active Transport
Frage 8
Frage
Shivering and sweating are examples of which of the following?
Antworten
-
positive feedback
-
negative feedback
-
sensory mechanisms
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effector mechanisms
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set points
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negative feedback and effector mechanisms
Frage 9
Frage
Movement of a substance into a cell against its concentration gradient is caused by _____
Antworten
-
simple diffusion
-
channel-mediated facilitated diffusion
-
osmosis
-
primary active transport
-
Carrier-mediated facilitated diffusion
Frage 10
Frage
Eating a bag of salted potato chips without increasing sodium excretion would result in what sate
Antworten
-
Positive sodium balance
-
Negative sodium balance
-
Stable sodium balance
-
negative glucose balance
-
It can't be determined
Frage 11
Frage
Which of the following are true of a cell (330m Osm internal environment ) placed in a 500mOsm salt solution?
Antworten
-
The cell is hypertonic to the solution
-
The cell is hypotonic to the solution
-
The cell is isotonic to the solution
-
The solution exerts a higher osmotic potential than the cell
-
The cell exerts a higher osmotic potential than the solution
Frage 12
Frage
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Antworten
-
Carrier-mediated facilitated diffusion
-
channel-mediated facilitated diffusion
-
primary active transport
-
Cotransport (symport)
-
countertransport (antiport)
Frage 13
Frage
Which of the following is an example of positive feedback in the body?
Antworten
-
blood clotting
-
return of blood pressure to normal after hemorrhage
-
increased respiration rate caused by accumulation of CO2 in the blood
-
decreased sympathetic nervous system activity that occurs in response to increased blood pressure
-
e)all of the above
Frage 14
Frage
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Antworten
-
simple diffusion
-
Carrier-mediated facilitated diffusion
-
channel-mediated facilitated diffusion
-
primary active transport
-
secondary active transport
Frage 15
Frage
Homeostasis is the static constancy of the internal physiological environment
Antworten
- True
- False
Frage 16
Frage
Active transport is the movement of a solute against its concentration gradient at the cost of energy
Antworten
- True
- False
Frage 17
Frage
When two solutions are isotonic to each other there is non net movement of water
Antworten
- True
- False
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