Drgawad Mid-module Exam - Physiology

22 Questions | Total Attempts: 243

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Drgawad Mid-module Exam - Physiology

22 MCQ25 minJoin my facebook grouphttps://www. Facebook. Com/groups/1636584326601471/


Questions and Answers
  • 1. 
    Which of the following is true regarding Na K pump:
    • A. 

      It is a form of passive transport

    • B. 

      It has 3 binding sites for K and 2 for Na

    • C. 

      It is important for normal excitability of a nerve

    • D. 

      The K movement depends on the energy released from Na movement

  • 2. 
    Regarding glucose transport, which is false:
    • A. 

      It can be transported by secondary active mechanism

    • B. 

      It may be by a carrier protein with concentration gradient without use of energy

    • C. 

      It may be by pinocytosis

    • D. 

      It is never to be through leak channel

  • 3. 
    Regarding lipid bilayer transport, which of the following can’t pass by this mechanism:
    • A. 

      Vit K

    • B. 

      O2

    • C. 

      CO2

    • D. 

      None of the above

  • 4. 
    Which of the following decrease the rate of diffusion through a membrane:
    • A. 

      Increase membrane surface area

    • B. 

      Low molecular weight diffusing substance

    • C. 

      High resistant protein channels

    • D. 

      Thin plasma membrane thickness

  • 5. 
    Regarding secondary active transport which is false:
    • A. 

      Counter transport means that 2 substances transported in opposite direction

    • B. 

      Symport means that 2 substances transported in same direction

    • C. 

      Uniport carrier is not from the carriers responsible for 2ndry active transport

    • D. 

      2ndry active transport is a form of active transport that need ATP to perform transportation of molecules

  • 6. 
    Facilitated diffusion means:
    • A. 

      Small molecule carried by a carrier with concentration gradient

    • B. 

      Large molecule carried by a carrier without need for energy against concentration gradient

    • C. 

      Small molecule carried by a carrier against concentration gradient

    • D. 

      Large molecule carried by a carrier with concentration gradient

  • 7. 
    Which of the following increases simple diffusion:
    • A. 

      Increase carrier saturation

    • B. 

      Large surface area

    • C. 

      Less concentration difference on both sides

    • D. 

      - none of the above

  • 8. 
    Which of the following is an active ligand:
    • A. 

      Na ions

    • B. 

      Acetylcholine

    • C. 

      K ions

    • D. 

      ATP

  • 9. 
    Which of the following is true regarding normal resting membrane potential:
    • A. 

      it is not important for normal cells function

    • B. 

      It is due to the selective permeability of healthy membranes

    • C. 

      It is due to passage of electrical impulses through the cell

    • D. 

      It is related to the easily movement of proteins to both sides of the membrane

  • 10. 
    Which of the following is not related to hypertonic solutions:
    • A. 

      Cell shrinkage

    • B. 

      Higher solute concentration than that in the cell

    • C. 

      Saline 0.9%

    • D. 

      None of the above

  • 11. 
    It is the number of osmoles per kg of solvent:
    • A. 

      Osmotic pressure

    • B. 

      Osmolaity

    • C. 

      Osmolarity

    • D. 

      Osmole

  • 12. 
    The pressure needed in the concentrated solution to prevent water movement from the diluted side
    • A. 

      Hydrostatic pressure

    • B. 

      Osmotic pressure

    • C. 

      Filtration pressure

    • D. 

      None of the above

  • 13. 
    Normal osmolality of the extracellular and intracellular fluids is:
    • A. 

      300 milliosm/L

    • B. 

      400 milliosm/L

    • C. 

      500 milliosm/L

    • D. 

      None of the above

  • 14. 
    It is the movement of water from area of low solute concentration (hypotonic) to area of high solute concentration (hypertonic):
    • A. 

      Osmotic pressure

    • B. 

      Osmolarity

    • C. 

      Osmosis

    • D. 

      Osmole

  • 15. 
    Osmotic pressure:
    • A. 

      Is formed at the diluted side

    • B. 

      Is formed at the concentrated side

    • C. 

      Depends mainly on the weight of the particles

    • D. 

      None of the above

  • 16. 
    Which of the following leads to cell shrinkage:
    • A. 

      Hypotonic solutions

    • B. 

      Isotonic solutions

    • C. 

      Hypertonic solution

    • D. 

      None of the above

  • 17. 
    Movement of water from side to side secondary to hydrostatic pressure is:
    • A. 

      Osmosis

    • B. 

      Filtration

    • C. 

      Diffusion

    • D. 

      Pinocytosis

  • 18. 
    which of the following is an example of positive feedback vicious mechaism:
    • A. 

      Blood clotting

    • B. 

      Child birth

    • C. 

      CO2 feedback mechanism

    • D. 

      Acetyl choline release

  • 19. 
    the three main components of reflex arc:
    • A. 

      Receptor, afferent, center

    • B. 

      Afferent, center, efferent

    • C. 

      Center, efferent, effector

    • D. 

      Receptor, center, effector

  • 20. 
    Which of the following ions has the highest concentration in body:
    • A. 

      Na

    • B. 

      K

    • C. 

      Ca

    • D. 

      Cl

  • 21. 
    Which of the following is an example of negative feedback mechanism:
    • A. 

      Child birth

    • B. 

      CO2 feedback mechanism

    • C. 

      Hemostasis

    • D. 

      None of the above

  • 22. 
    The largest proportional of body water present in:
    • A. 

      Blood

    • B. 

      Cells

    • C. 

      Interstitial

    • D. 

      Transcellular

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