物理和化学损伤可导致细胞质膜破损,胞质内容物释放等现象,细胞随后死亡,这种现象称为细胞凋亡。
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细胞毒性T淋巴细胞可释放穿孔蛋白和颗粒酶诱导被病毒感染的靶细胞发生凋亡。
A. 对
B. 错
在很多动物细胞中,使用caspase抑制剂或将caspase敲除后,细胞仍然可以发生凋亡。
A. 对
B. 错
端粒的缩短会使细胞中p53含量明显增加。
A. 对
B. 错
provide build role traits leadership solutions shyness involved express eventually trouble possibly concernedposition relationsShyness can limit your interpersonal skills, severely affecting your ability to be an effective leader. Leaders must 1)___________ instruction, guidance and, when necessary, impose discipline. A shy person may have 2)__________effectively accomplishing these tasks. To be an effective leader, you must get over that 3)___________and build confidence. Start by realizing that you take on a leadership 4)__________because of your abilities and your own managers' faith in you. Build on that to find the 5)__________within yourself to be an effective leader.• Make a list of what you want to accomplish in your 6)___________ role. Analyze these goals and how they complement your strengths.• Rehearse what you will say before meetings and other interactions. Make a list of potential problems and the 7)__________ you want to offer. This will increase your confidence before meetings and other interpersonal communication.• Get 8)__________ in a solitary activity like reading or writing before going into a potentially uncomfortable situation. This will focus your mind and reduce anxiety.• Communicate through emails and memos where possible. Composing a written message will allow you to clearly 9)_________ your thoughts.• Build confidence through your success. Each time you come out of a stressful situation successfully, you will find it easier to face the next one. 10)___________, you will become a confident person.