Of the events that lead to myofilaments sliding over each other, which of the following happens first in skeletal muscle?
A.
The myosin head engages with the binding site on actin
B.
Troponin changes shape and pulls on tropomyosin
C.
Calcium ions enter the cell cytoplasm
D.
ATP is hydrolysed to ADP and inorganic phosphate
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
皮皮学刷刷变学霸
举一反三
【简答题】听录音,填入正确的单词补全句子。 1. A: is Amy's English teacher? B: Mrs. Smith. 2. A: is he like? B: He's tall and strong. 3. A: you play basketball? B: Let me try. 4. A: is your mother? B: She is very well. 5. A: is...
【简答题】根据短文内容,在后面的方框中选择正确的答案填入短文中,使短文内容完整。 Hello, my name is Lin Tao. 1 . There are nine boys and twenty-eight girls in my class. 2 His name is Sam Smith. He’s thir. He is tall and strong. 3 They are...
【简答题】阅读理解。 This is Mr. Smith. He is from Washington D.C. of America. He is tall and fat. He has a big mouth and big nose. He has two big eyes with long brown hair. He is in Beijing now. He teaches us Engli...