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生物客观试题估分比较容易,考生可将自己记录下来的答案与评分标准核对即可。主观题比较灵活,而且一般是按推理步骤、描述的过程给分,估分难度较大。估分时,应注意答案的给分点是否全面,主观题的表达意思是否与标准答案一致。例1(2009年新课标第41题).(7)在制备单克隆抗体过程中的细胞融合阶段,用B淋巴细胞与骨髓瘤细胞融合,经多次筛选
Objective assessment of biological objective score is relatively easy, candidates can record their own answers and grading standards can be checked. Subjective questions more flexible, and generally based on reasoning steps to describe the process to points, the score is more difficult. Score, should pay attention to the answer to the points are comprehensive, the subjective question expression meaning is consistent with the standard answer. Example 1 (2009 New Curriculum Question 41) (7) During the cell fusion phase during the preparation of monoclonal antibodies, B lymphocytes were fused with myeloma cells and screened several times