【单选题】Of the s 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
【单选题】建设工程总投资,一般指进行某项工程建设花费的全部费用。生产性建设工程总投资包括建设投资和( )部分,非生产性建设工程投资只包括建设投资。
【单选题】The muscle cell is an elongated cell, which is commonly called a muscle fiber.
A.
skeletal … mononucleate
B.
skeletal … multinucleate
C.
cardiac … multinucleate
D.
cardiac … mononucleate
【单选题】某医学研究数据有一端没有确定值,描述其集中趋势适用的统计是: ( )
【多选题】根据我国法律的规定,对不同涉外合同的法律适用,按照最密切联系原则确定所运用的法律,下列选项中,哪些是正确的?( )
B.
涉外动产租赁合同,适用出租人营业所所在地的法律
D.
涉外成套设备供应合同,适用卖方营业所所在地的法律
【多选题】翻译:A.epithelial tissue ; B.nervous tissue;nervecell; neuron; neuroglial cell; nerve fiber C.muscle tissue; skeletal muscle; cardiac muscle; smooth muscle D. loose connective tissue; dense connect...
B.
神经组织;神经细胞;神经元;神经胶质细胞;神经纤维
【判断题】资金时间价值所代表的是没有投资风险和通货膨胀因素的投资报酬率。( )
【单选题】Which ion below is supposed to trigger the contraction of the skeletal muscle cell ( )
【单选题】With the transmission electron microscope skeletal muscle fibers can be seen to contain structures called triads. What do the two lat- eral components of a triad represent?
A.
Attachment sites for thick myofilaments
B.
Sites for calcium sequestration and release
C.
Sites for impulse conduction into the fiber
D.
Sites for ATP production
E.
Sites for synthesis of proteins to be secreted outside the cell
【单选题】The main difference between ventricular myocyte action potentials and skeletal muscle cell action potentials is
C.
There is a platform period
D.
Short repolarization time