Here we have provided the CBSE Class 11 Biology Exam Pattern with Marking Scheme for the 2025 examination. You can check the exam format and the chapter wise weightage. CBSE Class 11 Exam Pattern ...

5. In the context of muscle contraction, what is the role of ATP (adenosine triphosphate)? a) It provides oxygen to muscles. b) It is a neurotransmitter that signals muscle contraction. c) It ...