7-第7章 细胞质基质与内膜系统-2015-习题.pdf

Cell Biology 第六章 细胞基质与内膜系统 用电子显微镜观察不到微粒体，其原 因是( ) 。  a.微粒体太小，无法用电子显微镜观察  b.它们是匀浆和离心后的人造产物 √  c.电子能够完全穿透它们  d.只有通过显微摄影才能看到 下列哪组蛋白质的合成开始于细胞质基质 中，在糙面内质网上合成（ ）。  a 、膜蛋白、核定位蛋白  b 、分泌蛋白、细胞骨架  c 、膜蛋白、分泌蛋白 √  d 、核定位蛋白、细胞骨架 Which of the following matches are not correct.  A) ribosomes -- rough ER  B) protein synthesis -- smooth ER √  C) rough ER -- export of proteins out of cell  D) smooth ER -- cells in liver Where are ribosomes usually located in animal and plant cells?  A. inside the nucleus  B. near the cell membrane  C. on the endoplasmic reticulum √  D. inside the vacuole What part of the cell makes proteins?  A. Ribosomes √  B. Mitochondria  C. Lysosomes  D. Vacuole The difference between rough endoplasmic reticulum and smooth endoplasmic reticulum is that rough endoplasmic reticulum  A. does not contain ribosomes  B. contains ribosomes √  C. does not transport proteins  D. transports proteins The endoplasmic reticulum is best described as A. a network of tunnels extending from the √ nucleus to the Golgi bodies B. an organelle which produces protein  C. a vacuole which contains digestive enzymes D. a structure used for cell movement Which of the following is not produced by the Golgi apparatus?  A) glycolipids  B) glycoproteins  C) liposomes √  D) secretory vesicles What organelle processes and packages proteins before sending them through the cell?  A. Endoplasmic Reticulum  B. Ribosome  C. Mitochondria  D. Golgi Apparat