11. What type of process the transmission of nerve impluse is ?
A. Electromagnetic
B. Electro -chemical
C. only Elecrical
D. only Magnetic
Answer : Option A
12. What is correct for the resting potential
A. On innerside of plasma membrane + ve charge & outerside -ve charge is found
B. On outerside Na+ concentrartion is less ,on innersde k + concentrtion is less
C. On outerside a plasma membrane + ve charge and innerside is -ve charge
D. Electrically it is neutral in resting stage.
Answer : Option C
13. That is correct for unstimulated nerve- fibre ?
A. Resting potential
B. Action potential
C. Repolarization
D. Depolarization
Answer : Option A
14. Which option is correct for ion chhanel ?
A. They are consist of lipid.
B. They always remain open.
C. They are Permeable to more than one ion
D. They are consist of protein
Answer : Option D
15. Which option indicates correct chronology of the changes occuring during transmission of nerve impulse ?
A. Nerve fibre - depolarization - action polential - repolarization - activation of Na+ and K+ pump
B. Nerve fibre - depolarization - action polential - activation of Na+ and K+ pump - repolarization
C. Nerve fiber - depolarization - repolarization - action polential - activation of Na+ and K+pump
D. Nerve fiber - Activation of Na + and K+ pump - depolarization - repolarization -
Answer : Option A
16. Which of the following is used to measure membrane potential ?
17. What is responsible for the opening and closing of ion-channel ?
A. Electrical changes & Chemical Changes
B. More Na+ Conc out side of plasma membrane
C. More K+ Conc innerside of plasma membrane
D. On both Side of membranes Na+ and K+ are in equal proportion
Answer : Option A
What does "a" and "b" indicate in the given diagram ?
A. a = Synaptic bulb b = Phagocgtosis
B. a = Presynaptic b = Phagocytosis
C. a = Synaptic gap b = Secretion of neurotranmetter
D. a = Presynaptic bulb b = Secretion neurotranmitter
Answer : Option D
What does “a” indicate in the given diagram
A. Repolarization
B. Depolarization
C. Resting potential
D. Activation of Na+ and K+ pump
Answer : Option B
20. In context with conduction of nerve impulse,what is the function of ion channels ?
A. Maintenance and change in electric potential
B. Transport of ions against diffusion gradient
C. Transport of Na+ ion to the innerside of a the membrane
D. All of the given
Answer : Option D