| ⇦ | 
| ⇨ |
Which of the following ions help in muscle contraction?
Options
(a) K⁺ and Mg⁺⁺
(b) Na⁺ and K⁺
(c) Ca⁺⁺ and Na⁺
(d) Ca⁺⁺ and Mg⁺⁺
Correct Answer:
Ca⁺⁺ and Mg⁺⁺
Explanation:
Ca²⁺ as well as Mg⁺⁺ help in muslce contraction. Actin and myosin get combined in presence of ATP and Ca²⁺ to form actomyosin to Myosin + Actin –ATP/Ca²⁺—> Actomysin Energy released by the oxidation of food in the form of ATP is broken down into ADP, phosphorus and energy in the presence of enzyme myosin ATPase, Ca²⁺ and Mg²⁺ions. ATP + H₂O —myosin ATPase/Ca²⁺,Mg²⁺—–> ADP + Pi+ Energy The energy is used up in the contraction of muscle.
Related Questions: - Halophytes are peculiar in having
- In higher plants the shape of the chloroplast is
- Match each disease with its correct type of vaccine:
- The ovule curvature is more pronounced and embryo sac become horse shoe shaped
- DNA replication in bacteria occurs
Topics: Locomotion and Movement
(106)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Halophytes are peculiar in having
- In higher plants the shape of the chloroplast is
- Match each disease with its correct type of vaccine:
- The ovule curvature is more pronounced and embryo sac become horse shoe shaped
- DNA replication in bacteria occurs
Topics: Locomotion and Movement (106)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply