Drgawad Mid-module Exam - Physiology

22 Questions | By Drgawaddrgawad | Last updated: Mar 21, 2022 | Total Attempts: 246

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Drgawad Mid-module Exam - Physiology - Quiz

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