In a Skeletal Muscle Contraction, Which of the Following Acts

question 31

Multiple Choice

In a skeletal muscle contraction, which of the following acts to allow the crossbridge cycle to occur when it flows into the cytosol through open ion channels?

• A) ATP
• B) acetylcholine
• C) tropomyosin
• D) Ca²⁺

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Definitions:

Secondary Consumers

Organisms that feed on primary consumers in an ecosystem; they are typically carnivores or omnivores.

Secondary Consumers

Organisms, typically animals, that obtain energy by consuming primary consumers, which are herbivores.

Radiant Energy

Energy that travels by waves or particles, particularly electromagnetic radiation such as light and heat.

Photosynthesis

A process used by plants and other organisms to convert light energy, usually from the sun, into chemical energy that can be later released to fuel the organism's activities.