<span>A key difference between active transport and diffusion is that active transport needs energy</span>
Answer:
D: a Hypertonic sucrose solution
Explanation:
Sucrose cannot pass through the membrane and Hypertonic solution's cause cells to shrink.
Answer:
c. factory
Explanation:
might be wrong but if not congrats I guess
Answer:
E. bind to troponin which moves the tropomyosin
Explanation:
calcium ions bind to troponin, causing conformational changes in troponin that allow tropomyosin to move away from the myosin binding sites on actin. Once the tropomyosin is removed, a cross-bridge can form between actin and myosin, triggering contraction
