NEET Biology question

Assertion: On stimulation, a muscle cell releases calcium ions (Ca2+) from sarcoplasmic reticulum.

Reason: By reacting with a protein complex, Ca2+ uncover active sites on the actin filaments.

(A)Both assertion and reason are true and reason is the correct explanation of assertion
(B)Both assertion and reason are true but reason is not the correct explanation of assertionCorrect
(C)Assertion is true but reason is false
(D)Both assertion and reason are false

Answer: (B)

Solution

The assertion is true, since stimulation does cause the sarcoplasmic reticulum to release Ca2+, and the reason is also true, since Ca2+ binding to troponin indeed uncovers the active sites on actin for myosin; however,

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-117296