6. Which of the following steps would occur last (after all the others)?
A. Calcium is released from the sarcoplasmic reticulum
B. calcium binds to its regulatory molecule (troponin or calmodulin)
C. the muscle cell depolarizes
D. Acetylcholine is released into the neuromuscular junction

Aplant has an egg with 34 chromosomes how many chromosomes does a leaf cell of that plant have

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because