Home
Class 12
BIOLOGY
Which of the following are true about re...

Which of the following are true about resting phase of neuron ? (a) Ion channels are working (b) Influx of Na+ ions through Vgc (c) `Na^(+)-K^(+)` pump are working to transport `3K^(+)` ions out and `2Na^(+)` inside (d) Potassium voltage gated channels are open to maintain negative charge inside (e) Potential difference accross membrane at rest is – 70 mV

A

Only a

B

b, c, e

C

a, c, e

D

a and e

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • NEET-UG DRILL TEST 14

    NEET MAJOR TEST (COACHING)|Exercise BIOLOGY|90 Videos

Similar Questions

Explore conceptually related problems

Through which of the following . Energy (ATP) is required to transport the ions and why ? (a) Sodium - potassium pumps (b) Na^(+) channels (c ) K^(+) channels

Which of the following statements are correct regarding Na^+ - K^+ pump ? (i)Needs energy (ATP) to work (ii)Expels 3 Na^+ for every 2K^+ ions imported (iii)Works against a concentration gradient (iv)Maintains resting potential

Which of the following atoms and ions are isoelectronic (i.e. Have dor the same number of electrons) with a neon atom a C b. O^(2-) c. n^(Theta) d. F^(o+) e. Na^(o+) f. AI^(3+)

Assertion : When a neuron is not conducting any impulse, i.e. resting, the axoplasm inside the axon contains high concentration of K^(+) and negatively charged proteins and low concentration of Na^(+) . Reason : In resting, the axonal membrane is comparatively more permeable to K^(+) ions and nearly impermeable to Na^(+) ions. Similarly, the membrane is impermeable to negatively charged proteins present in axoplasm

Na^+ – K^+ pump (A) Transports 3Na^+ inwards & 2K^+ outwards. (B) Maintain ionic gradients by active transport. (C) Works against a concentration gradient. How many of above statements are false ?

Read the following statements about the human nervous system : (i) A multipolar neuron is with one axon and two or more dendrites , found in the cerebral cortex. (ii) in resting condition, the sodium-potassium pump transports 3 Na^(+) inwards and 2K^(+) outwards the cell. (iii) Midbrain and hindbrain form the brain stem including the cerebellum. (iv) the pons of the hindbrain is directly connected to the spinal cord to control respiration. How many statement/s from above is/are incorrect ?

NEET MAJOR TEST (COACHING)-NEET-UG DRILL TEST 15-BIOLOGY
  1. Mark the incorrectly matched pair in the following :-

    Text Solution

    |

  2. Read the following statements (A – D) : (A) The nerve fibres of PNS ar...

    Text Solution

    |

  3. Which of the following are true about resting phase of neuron ? (a) Io...

    Text Solution

    |

  4. Neurons are excitable cells because their membrane is in which state ?

    Text Solution

    |

  5. The appetite and satiety centres in the brain are located in :-

    Text Solution

    |

  6. Due to which region coordination of voluntary muscle through involunta...

    Text Solution

    |

  7. The following structures are part of the human brain:- (A) Spinal cord...

    Text Solution

    |

  8. Which statement is true regarding sympathetic nervous system :-

    Text Solution

    |

  9. Which of the following is not a reflex action?

    Text Solution

    |

  10. Which brain structure converts short term memory to long term memory ?

    Text Solution

    |

  11. Blind spot in the eye is located :-

    Text Solution

    |

  12. If the light source is front of an eye becomes bright suddenly.

    Text Solution

    |

  13. Even if there is no damage in photoreceptor cells, still the person is...

    Text Solution

    |

  14. The part of internal ear responsible for hearing is

    Text Solution

    |

  15. In which part of brain the action potential (impulses) transmitted by ...

    Text Solution

    |

  16. Mammary gland is example of which type of gland ?

    Text Solution

    |

  17. On the basis of site of release of secretory product, glands can be cl...

    Text Solution

    |

  18. Which type of epithelium is found in pesophagus, buccal cavity, cornea...

    Text Solution

    |

  19. Junctions, help to stop substances from leaking across a tissue :

    Text Solution

    |

  20. Tendon is made up of

    Text Solution

    |