Chapter 1 Homeostasis and Fundamental Cell Physiology

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tiwariashley
Created by tiwariashley over 5 years ago
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Physiology Lab at the University of Central Florida

Resource summary

Question 1

Question
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Answer
  • Carrier-mediated facilitated diffusion
  • Channel-mediated facilitated diffusion
  • Primary Active Transport
  • Cotransport (symport)
  • countertransport (antiport)

Question 2

Question
Which of the following are considered unassisted membrane transport mechanisms?
Answer
  • simple diffusion
  • Carrier-mediated facilitated diffusion
  • Channel-mediated facilitated diffusion
  • Primary Active Transport
  • Secondary Active Transport

Question 3

Question
Which of the following molecules are able to permeate a cell membrane?
Answer
  • steroids
  • glucose
  • ions
  • methanol
  • complex amino acids

Question 4

Question
Crenation of a cell would be observed if it was placed in which of the following solutions?
Answer
  • Hypotonic
  • Hypertonic
  • isotonic
  • both hypotonic and hypertonic
  • both isotonic and hypotonic

Question 5

Question
Which of the following constitutes Fick's law of diffusion?
Answer
  • 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

Question 6

Question
_____________ occurs when the response made by the effector amplifies the changes in the controlled variable cause by a stimulus
Answer
  • Negative feedback mechanism
  • positive feedback mechanism
  • Feed forward Mechanism
  • Allostasis
  • Positive feedback and feed forward mechanism

Question 7

Question
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Answer
  • Simple diffusion
  • Carrier-mediated facilitated diffusion
  • Channel-mediated facilitated diffusion
  • Primary Active Transport
  • Secondary Active Transport

Question 8

Question
Shivering and sweating are examples of which of the following?
Answer
  • positive feedback
  • negative feedback
  • sensory mechanisms
  • effector mechanisms
  • set points
  • negative feedback and effector mechanisms

Question 9

Question
Movement of a substance into a cell against its concentration gradient is caused by _____
Answer
  • simple diffusion
  • channel-mediated facilitated diffusion
  • osmosis
  • primary active transport
  • Carrier-mediated facilitated diffusion

Question 10

Question
Eating a bag of salted potato chips without increasing sodium excretion would result in what sate
Answer
  • Positive sodium balance
  • Negative sodium balance
  • Stable sodium balance
  • negative glucose balance
  • It can't be determined

Question 11

Question
Which of the following are true of a cell (330m Osm internal environment ) placed in a 500mOsm salt solution?
Answer
  • 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

Question 12

Question
________ occurs when the driver ion and molecule move in opposite directions across the plasma membrane
Answer
  • Carrier-mediated facilitated diffusion
  • channel-mediated facilitated diffusion
  • primary active transport
  • Cotransport (symport)
  • countertransport (antiport)

Question 13

Question
Which of the following is an example of positive feedback in the body?
Answer
  • 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

Question 14

Question
_______ is driven by the direct use of ATP to transport a molecule against its concentration
Answer
  • simple diffusion
  • Carrier-mediated facilitated diffusion
  • channel-mediated facilitated diffusion
  • primary active transport
  • secondary active transport

Question 15

Question
Homeostasis is the static constancy of the internal physiological environment
Answer
  • True
  • False

Question 16

Question
Active transport is the movement of a solute against its concentration gradient at the cost of energy
Answer
  • True
  • False

Question 17

Question
When two solutions are isotonic to each other there is non net movement of water
Answer
  • True
  • False
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