The Ion That Enters Myofibrils and Stimulates Actin and Myosin

question 7

Multiple Choice

The ion that enters myofibrils and stimulates actin and myosin to shorten the cell (contract) is:

• A) iron.
• B) calcium.
• C) sodium.
• D) potassium.

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Definitions:

Grignard Reagent

An organomagnesium compound used in chemical reactions to form carbon-carbon bonds, instrumental in organic synthesis.

Mg/Diethylether

A common Grignard reaction solvent system involving magnesium metal in diethyl ether, used in organic synthesis to form carbon-carbon bonds.

Substrates

The reactants or substances upon which an enzyme acts in biochemical reactions, or the starting materials in chemical syntheses.

Ketone Treatment

A process or reaction involving the use of ketones, often for chemical synthesis or modification of compounds.