Fungi has a cell wall but no chloroplasts.
Answer:
<u>Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.</u>
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Answer:
i don't really know but good luck
Explanation:
<span>a carbohydrate which contains sugar molecules bonded together</span>
