Home
Class 11
BIOLOGY
The ion that must be present in adequate...

The ion that must be present in adequate amount for the
binding of cross bridges with actin is

A

`Ca^(2+)`

B

`Na^(+)`

C

`K^(+)`

D

`Mg^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • LOCOMOTION AND MOVEMENT

    CENGAGE BIOLOGY|Exercise ARCHIVES|12 Videos
  • EXCERETORY PRODUCTS AND THEIR ELIMINATION

    CENGAGE BIOLOGY|Exercise ARCHIVES|22 Videos
  • MINERAL NUTRITION

    CENGAGE BIOLOGY|Exercise ARCHIVES|39 Videos

Similar Questions

Explore conceptually related problems

lons that must be present for binding the cross bridges are

Which of the following must be present in alums

Actin fiber is present in

Actin is present in thin filament

In the resting state , which protein masks the active binding sites of actin filaments ?

What ions, must be present in a solution used for electroplating a particular metal?

Name the ion responsible for the unmasking of active sites for myosin for cross- bridge activity during muscle contraction

Name the ion responsible for masking active sites for myosin for cross-bridge activity during muscle contraction

The given graph shows length-tension curve for a typical vertebrate sarcomere. By analysing the graph, what can you deduce regarding the muscle contraction? (i) Neither the myosin filaments nor the actin thin filaments change in length when a sarcomere shortens or is stretched. Instead, it is the extent of ocerlap between actin and myosin filaments that changes. (ii) The total tension produced by a sarcomere is proportional to the total number of cross-bridges that can interact with actin filaments, and this number in turn is proportional to the amount of of overlap between thick and thin filaments. (iii) The tension produced by the muscle is maximal when the overlap between thick and thin filamentss allows the largest number of myosin cross-bridges to bind to actin. (iv) Tension drops off with increased lenght, because the thick and thin filaments overlap less and fewer cross-bridges can bind. Tension drops off with decreased length, because thin filaments at the two ends of the secromere begin to collide with each other, preventing further shortening.

The order in contraction in muscle in (a)Generation of action potential in muscle fibres (b)Release of neuro transmitter at motor c) Formation of cross linkages between actin and myosin (d) Release of Ca^(2+) and binding to troponin C