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一、选择题1.下列说法中正确的有()1除了细胞之间形成通道外,细胞之间的信息交流都要通过细胞膜上的受体来实现2中心体是仅由两个相互垂直的中心粒组成的细胞器3吃梅子感到酸是非条件反射4核糖体是细菌、动物、植物唯一共有的细胞结构5进行有丝分裂的细胞中不一定存在同源染色体6分裂期的细胞不能进行DNA的复制和蛋白质的合成7人体的胸腺既是免疫器官又是内分泌器官8模拟性状分离比的实验中,
First, multiple-choice questions 1. The following statement is correct () 1 in addition to the formation of channels between cells, the exchange of information between cells through the cell membrane receptors to achieve 2 centrosome is composed of only two mutually perpendicular Organelles composed of centrioles 3 Eating plums Feeling acid is a non-conditioned reflex 4 Ribosomes are the only common cellular structures of bacteria, animals and plants 5 Cells that do not necessarily have homologous chromosomes in mitotic cells 6 Cells that divide are not capable of DNA replication and Protein Synthesis 7 The human thymus is both an immune organ and an endocrine organ 8 In the experiment of simulated segregation ratio,