What is part A of this cell membrane diagram

The answer to this will be from your lab notes/procedure. it would be best to ask another student who participated in the lab as we do not know what was done, what enzyme or if the temperature is celsius or fahrenheit. if i were to guess though i'd say the rate stopped due to enzyme denturing at high temperature

Answeris longer than the total refractory period for skeletal muscle;

The answer is c. 7hope it

The climate in the tropical zone is characterized by warm temperatures and abundant precipitationmoderate temperatures and little precipitationa wide range of temperatureshot dry summers and cool wet winters answer: hot dry summers