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生物專業(yè)細(xì)胞生物學(xué)課程試題5-資料下載頁(yè)

2025-04-04 23:36本頁(yè)面
  

【正文】 d cyclin E C. CDC2 and cyclin B D. CDK1 and cyclin C 28.Necrosis A. May be mediated by FAS signal pathway. B. Characterized by DNA degraded into about 200bp fragment. C. Is a genetically controlled process. D. Occurs when cell is injured. 29.Which of the following mutations in a tumor suppressor gene will most likely not result in cancer? A. Point mutant. B. Deletion. C. Gene rearrangement. D. All of the above. 30.Which of the following about apoptosis is not true? A. Is acpanied by random DNA degradation. B. Is a sort of cellular selfdestruction that takes place in normal tissues. C. Is characterized by nuclear fragmentation and cellular breakdown into apoptotic vesicles. And does not induce inflammation. D. Differs from necrosis because necrosis occurs when cell is injured. 得 分評(píng)卷人二、簡(jiǎn)答題(20分)31.用細(xì)胞松弛素B處理分裂期的動(dòng)物細(xì)胞將會(huì)產(chǎn)生什么現(xiàn)象?為什么?(5分)關(guān)鍵詞:Myosin II, Actin32.什么是Hayflick極限?有什么理論依據(jù)?(5分)關(guān)鍵詞:成纖維細(xì)胞 端粒 端聚酶33.說(shuō)明減數(shù)分裂的遺傳學(xué)意義。(10分)關(guān)鍵詞:聯(lián)會(huì) 重組得 分評(píng)卷人三、論述題(20分)34.論述生物膜的結(jié)構(gòu)及其在生命活動(dòng)中的作用。關(guān)鍵詞:質(zhì)膜 內(nèi)膜系統(tǒng) 功能區(qū)隔 跨膜運(yùn)輸 信號(hào)轉(zhuǎn)導(dǎo) 能量轉(zhuǎn)換 酶35.從細(xì)胞周期調(diào)控的角度論述腫瘤的發(fā)生。關(guān)鍵詞:CDK, CDC, cyclin, CKI p53, p21, 原癌基因 抑癌基因 生長(zhǎng)因子 信號(hào)通路(signal pathway) 轉(zhuǎn)錄因子8 / 8
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