B, Measure your heart rate by placing two fingers gently against your wrist (don't use your thumb). If it is hard to feel the pulse in your wrist, find the artery in your neck that is just to either side of the windpipe. ...
Count the beats for 15 seconds. Multiply the number of beats by 4.
The answer to your question is B, Myosin and actin do not fully detach, so the muscle cannot relax.
Hope this helps!
Monogenetic disorders are caused by a mutation in a single gene. The mutation may be present on one or both chromosomes (one chromosome inherited from each parent). Examples of monogenic disorders are: sickle cell disease, cystic fibrosis, polycystic kidney disease, and Tay-Sachs disease.
