Which of the following is composed of a large and a small subunit? () A: Golgi apparatus B: endoplasmic reticulum C: mitochondria D: Ribosome

Which one of the following is continuous with the nuclear envelope?() A: endoplasmic reticulum B: Golgi apparatus C: mitochondrion D: lysosome

Which of the following cells in the testis contain the most smooth endoplasmic reticulum?() A: Spermatogonium B: Leydig cell C: Smooth muscle cell D: Sertoli cell E: Spermatid

What are the correct descriptions of chondrocytes?() A: Located in cartilage lacuna B: Same cell size C: All in a single distribution D: Rich in rough endoplasmic reticulum and Golgi complex E: Each cell has a cartilage capsule

Which one of the following situations is not associated with the dysfunction of excitation-contraction coupling in myocardium? A: Acidosis B: The obstruction of L-type calcium channels C: The increased activity of myosin ATPase in myocardium D: The increased foetus troponin E: The decreased activity of sarco-endoplasmic reticulum calcium-ATPase

Which of the following is incorrect regarding serous gonadal vesicles: A: The top of the cytoplasm contains eosinophilic secretory granules B: The basal cytoplasm is strongly basophilic C: The nucleus is oblate at the base of the cell D: At the base of the cell are a large number of parallel thick endoplasmic reticulum and mitochondria E: More ribosomes

Which of the following cell activities need energy consumption? <br/>() A: Maintain normal resting potential B: A large amount of Na+<br/>influx occurs when the threshold potential is reached C: K+<br/>outflow in repolarization phase of action potential D: Ca2+<br/>in the cytoplasm of skeletal muscle accumulates into the sarcoplasmic<br/>reticulum E: Uneven distribution of Na+<br/>and K+<br/>inside and outside the cell