A  single twitch has three phases: WHAT IS THE CORRECT ORDER…

A  single twitch has three phases: WHAT IS THE CORRECT ORDER OF THESE?   1 –Relaxation phase Ca2+ levels in cytosol fall Cross-bridges detach and tension decreases 2  –Latent period Action potential moves across sarcolemma SR releases Ca2+ 3  Contraction phase Calcium ions bind to troponin and cross-bridges form Tension builds to a peak

7). Your physician had prescribed a β-lactam antibiotic for…

7). Your physician had prescribed a β-lactam antibiotic for your sister. Your sister took biology in high school and is refusing to take the antibiotic because she says that it will affect osmosis in her cells. Which reason can you use to help your sister understand how the antibiotic will work?