Answer:A. The release of calcium ions causes myosin and actin to attach to each other.
The contraction of skeletal muscles takes place by induction of a nerve impulse, which produces a movement and the interaction of the filaments containing proteins named as actin and myosin. This interaction of filaments is regulated by proteins called tropomyosin and troponin present on the actin filaments. The motor nerve causes the depolarization of the muscle membrane sarcolemma. This triggers the sarcoplasmic reticulum to release calcium ions. This calcium binds to troponin and thus allows the tropomyosine strand on the actin filament to displace so that the part of the actin where myosine head needs to be attached remain uncovered. Binding of the actin myosine filament results in contraction.
Hence, the release of calcium ions causes myosin and actin to attach to each other causes muscle contraction.
1. B Stomach
2. C Small intestine
3. A Chyme
4. D None of the Above
5. C Both A and B
6. D Blood
B IT WOULD BE ACCIDENTAL CAUSE SHE DIDNT MEAN TO CARRY THEM ON HER SHOES
DNA is the molecule that contains the genetic information that is transmitted hereditary and controls the cellular functioning
I got 0.05948 hope this helps and sorry I'm not good at explaining hopefully someone else can explain
