3736936
Descrição
Quiz por tiwariashley, atualizado more than 1 year ago
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Criado por tiwariashley
mais de 8 anos atrás
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Questão 1
Questão
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Responda
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Cotransport (symport)
-
countertransport (antiport)
Questão 2
Questão
Which of the following are considered unassisted membrane transport mechanisms?
Responda
-
simple diffusion
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Secondary Active Transport
Questão 3
Questão
Which of the following molecules are able to permeate a cell membrane?
Responda
-
steroids
-
glucose
-
ions
-
methanol
-
complex amino acids
Questão 4
Questão
Crenation of a cell would be observed if it was placed in which of the following solutions?
Responda
-
Hypotonic
-
Hypertonic
-
isotonic
-
both hypotonic and hypertonic
-
both isotonic and hypotonic
Questão 5
Questão
Which of the following constitutes Fick's law of diffusion?
Responda
-
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
Questão 6
Questão
_____________ occurs when the response made by the effector amplifies the changes in the controlled variable cause by a stimulus
Responda
-
Negative feedback mechanism
-
positive feedback mechanism
-
Feed forward Mechanism
-
Allostasis
-
Positive feedback and feed forward mechanism
Questão 7
Questão
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Responda
-
Simple diffusion
-
Carrier-mediated facilitated diffusion
-
Channel-mediated facilitated diffusion
-
Primary Active Transport
-
Secondary Active Transport
Questão 8
Questão
Shivering and sweating are examples of which of the following?
Responda
-
positive feedback
-
negative feedback
-
sensory mechanisms
-
effector mechanisms
-
set points
-
negative feedback and effector mechanisms
Questão 9
Questão
Movement of a substance into a cell against its concentration gradient is caused by _____
Responda
-
simple diffusion
-
channel-mediated facilitated diffusion
-
osmosis
-
primary active transport
-
Carrier-mediated facilitated diffusion
Questão 10
Questão
Eating a bag of salted potato chips without increasing sodium excretion would result in what sate
Responda
-
Positive sodium balance
-
Negative sodium balance
-
Stable sodium balance
-
negative glucose balance
-
It can't be determined
Questão 11
Questão
Which of the following are true of a cell (330m Osm internal environment ) placed in a 500mOsm salt solution?
Responda
-
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
Questão 12
Questão
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Responda
-
Carrier-mediated facilitated diffusion
-
channel-mediated facilitated diffusion
-
primary active transport
-
Cotransport (symport)
-
countertransport (antiport)
Questão 13
Questão
Which of the following is an example of positive feedback in the body?
Responda
-
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
Questão 14
Questão
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Responda
-
simple diffusion
-
Carrier-mediated facilitated diffusion
-
channel-mediated facilitated diffusion
-
primary active transport
-
secondary active transport
Questão 15
Questão
Homeostasis is the static constancy of the internal physiological environment
Responda
- True
- False
Questão 16
Questão
Active transport is the movement of a solute against its concentration gradient at the cost of energy
Responda
- True
- False
Questão 17
Questão
When two solutions are isotonic to each other there is non net movement of water
Responda
- True
- False
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