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The special contractile protein actin is found in

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Important Questions on Locomotion and Movement

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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 14
During muscular contraction, the
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 15
The muscular contraction in which the tension remains the same and the mechanical work is also done is called
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 16
Striated muscles contract by -
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 17
In a relaxed fibril, H-zone, a lighter region of low density can be seen in the centre of
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 18
An all out sprint can not continue for more than 40 seconds because
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 19
Ions that must be present for binding the cross bridges is
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 20

Match the columns.

 Column-I  Column-II
(a) Longest smooth muscle (i) Stapedius muscle
(b) Strongest muscle (ii) Uterus muscle
(c) Smallest muscle (iii) Jaw muscle
(d) Largest muscle (iv) Gluteus maximus
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Alpha Question Bank for Medical: Biology>Chapter 20 - Locomotion and Movement>Exercise-3>Q 21

Find out the set of correct statements

(A) Meromyosin is the monomeric protein of myosin.

(B) Each meromyosin has head as HMM and tail as LMM

(C) Increase in Ca2+ level leads to binding of Ca with a subunit of tropomyosin on actin filament

(D) ATP hydrolysis is done by myosin head to make cross bridge.