The Binding of Calcium to the Troponin Complex

question 7

Multiple Choice

The binding of calcium to the troponin complex

• A) activates myosin kinase, causing phosphorylation of myosin heads.
• B) disrupts cross-bridges, allowing filaments to slide past each other.
• C) allows tropomyosin to bind actin.
• D) opens ion channels, allowing sodium to rush into the muscle cells.
• E) causes tropomyosin to shift position, exposing myosin bind sites on actin.

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Definitions:

Disjunction

A logical operation that yields true if at least one of its operands is true.

Conditional

A logical statement that has an "if-then" form, specifying that one proposition depends on another for its truth.

Symbolize

To represent or stand for something else, especially through the use of symbols or symbolic language.

Symbolize

To represent ideas or concepts with symbols, marks, or characters.