Which of the Following Happens During a Cross-Bridge Cycle in Skeletal

question 269

Multiple Choice

Which of the following happens during a cross-bridge cycle in skeletal muscle?

• A)The cross bridge is energized as myosin and ATPase activity hydrolyzes ATP.
• B)The myosin cross bridge is able to bind with a troponin molecule when Ca²⁺ pulls the troponin-tropomyosin complex aside.
• C) The linkage between actin and the myosin cross bridge is broken at the end of the cross-bridge cycle as Mg²⁺ binds to the cross bridge.
• D) The power strokes of all cross bridges are directed toward the periphery of the thick filament.

---

Definitions:

Erikson

Erikson refers to Erik Erikson, a developmental psychologist known for his theory on the psychosocial development of human beings through eight stages from infancy to adulthood.

Insecure Attachment

Insecure attachment refers to a type of attachment style characterized by anxiety, fear of abandonment, and difficulty in trusting relationships, stemming from early relationships with caregivers.

Artificial Mothers

Reference to research setups, often in psychology, where infants or young animals are provided with substitute mother figures made from materials like cloth or wire to study attachment behavior.

Nature

All aspects of the material world such as animals, plants, landscapes, and earth's own creations, excluding human-made objects and structures.