What is the correct order of events of excitation-contractio…

What is the correct order of events of excitation-contraction coupling?    I: action potential travels down into T tubules    II: the action potential travels along sarcolemma away from the neuromuscular junction    III: the action potential opens voltage-gated channels in the sarcoplasmic reticulum    IV: calcium is released into the cell around the myofilaments

As a follow up to the decomposition research project, a grou…

As a follow up to the decomposition research project, a group of students wants to determine what microbial decomposers were present in the soil and how the the species of decomposers differed between their treatments. What would be the most efficient method for the students to use? Note: assume that access to all of these is possible and they have funding for any option they choose.