Calcium Turns on Cross Bridges by Physically Repositioning the Troponin-Tropomyosin

question 12

Multiple Choice

Calcium turns on cross bridges by physically repositioning the troponin-tropomyosin complex to uncover the actin cross-bridge binding sites in

• A) skeletal muscle.
• B) cardiac muscle.
• C) smooth muscle.
• D) both skeletal and cardiac muscle.
• E) all of these answers.

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Definitions:

Expensive

Involving a high cost or requiring considerable resources, often more than what is considered average or necessary.

Monozygotic Twins

Also known as identical twins, these are two individuals who originate from a single fertilized egg, sharing identical genetic material.

Zygotes

The initial cell formed when a new organism is produced by the union of male and female sexual cells, containing all the genetic information necessary to form a new individual.

Genetically Identical

Organisms or cells that have the exact same genetic material, often referred to as clones.