3. 体外培养的癌细胞分裂时可能出现整条染色体错误分离，表现出“染色体不稳定性”。下列叙述正确的
是
A. 癌细胞传代培养时需用胃蛋白酶处理并分瓶
B. 培养基中添加青霉素能有效抑制细菌和真菌污染
C. 纺锤丝与染色体着丝粒异常结合会导致“染色体不稳定性”出现
细胞周期与有丝分裂 · 历年高考生物真题与解析
本页汇总 高考真题检索 的「细胞周期与有丝分裂」高考生物真题共 2 道，覆盖 2026 年，最常出题型为 解答题；含完整答案与解析。
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5.M是细胞周期的关键调节因子，参与调控染色质凝集、纺锤体组装及核膜破裂。细胞周期中染色体和DNA的数量变化如图所示。M发挥上述作用的阶段是（）
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