MCQ
Assertion: Axoplasm inside the axon contains high concentration of K+ and low concentration of Na+ when neuron is not conducting any impulse.
Reason: The axonal membrane is comparatively more permeable to potassium ions (K+) and nearly impermeable to sodium ions (Na+).
  • Assertion and reason both are true and the reason is correct explanation of assertion.
  • B
    Assertion and reason both are true but reason is not correct explanation of assertion.
  • C
    Assertion is true but reason is wrong.
  • D
    Assertion and reason both are wrong.

Answer

Correct option: A.
Assertion and reason both are true and the reason is correct explanation of assertion.
A

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A frog has
Growth of young cartilage takes place by
Assertion : In the descending limb of loop of Henle, the urine is hypertonic, whereas in ascending limb of loop of Henle, the urine is hypotonic.
Reason : Descending limb is impermeable to sodium, while ascending limb is impermeable to water.
Match the following :

Types of leucocytes               Function

$A.$ Neutrophils                         $1.$ Heparin and histamine secretion

$B.$ Basophils                            $2.$ Antibodies formation

$C.$ Acidophils                           $3.$ Scavanger

$D.$ Monocytes                          $4.$ Phagocytes

$E.$ Lymphocytes                       $5.$ Antiallergic and healing of wounds

The correct pairing sequence is

Statement I: Sternum is a large triangular flat bone situated in the dorsal part of the thorax between the second and the seventh ribs.
Statement II: Each coxal bone is formed by the fusion of three bones ilium, ischium and pubis.
Insects are
Which of the following statements is correct?
Select the option including all sexpally transmitted diseases.
Which of the following is wrongly matched in the given table ?

Microbe Product Application
$(a)$ Streptococccus Streptokinase Removal of clot fromblood vessel
$(b)$ Clostridium butylicum Lipase Removal of oil stains
$(c)$ Trichoderma polysporum  Cyclosporin $A$ Immuno-suppressive drug
$(d)$ Monascus purpureus Statins Lowering of blood cholesterol

 

The method of sterilisation is