When Troponin Binds Calcium

question 49

Multiple Choice

When troponin binds calcium,

• A) it changes conformation,twisting tropomyosin and exposing the actin-myosin binding site.
• B) ion channels open and sodium rushes into the muscle cells.
• C) it allows tropomyosin to bind actin.
• D) it changes conformation,exposing the ATP binding site and allowing the actin-myosin bond to break.
• E) ATP binds to the myosin head,allowing myosin to attach to actin.

Describe the process and significance of reflex actions.

Explain the role of biological factors in psychological phenomena such as mood, perception, and behavior.

Understand the distinction between the peripheral and central nervous systems and their functions.

Comprehend the implications of neural and hormonal imbalances on health and behavior.

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