Embibe Experts Solutions for Chapter: Locomotion and Movement, Exercise 3: Level 3
Embibe Experts Biology Solutions for Exercise - Embibe Experts Solutions for Chapter: Locomotion and Movement, Exercise 3: Level 3
Attempt the practice questions on Chapter 20: Locomotion and Movement, Exercise 3: Level 3 with hints and solutions to strengthen your understanding. Biology Crash Course NEET solutions are prepared by Experienced Embibe Experts.
Questions from Embibe Experts Solutions for Chapter: Locomotion and Movement, Exercise 3: Level 3 with Hints & Solutions
During contraction of muscles:
Read the following statements and choose the correct option:
Statement I: During contraction of skeletal muscles, calcium binds with troponin so that myosin head binding sites on actin are exposed.
Statement II: The process of muscle contraction continues till sodium ions are pumped back to sarcoplasmic reticulum, resulting in masking of actin filaments which results in the return of Z-lines back to their original position.
Match column I with II and select the correct option from the codes given below.
| Column I | Column II | ||
|---|---|---|---|
| Structrual and functional unit of a myofibril | H-zone | ||
| Protein of thin filament | Myosin | ||
| Protein of think filament | Sarcomere | ||
| The central part of thick filament not overlapped by thin filament | Actin |
During muscular contraction, which of the following events occur?
(i) H-zone disappears
(ii) A-band widens
(iii) I-band reduces in width
(iv) Width of A-band is unaffected
(v) M-line and Z-line come closer
Which of the following is true regarding thick filaments?
