问题
填空题 案例分析题
下面为基因与性状的关系示意图,据图回答:
通过①过程合成mRNA,在遗传学上称为()其主要场所是()
答案
参考答案:转录;细胞核
解析:
通过①过程合成mRNA,在遗传学上称为转录,因为DNA主要存在于细胞核中,所以转录的主要场所是细胞核。
下面为基因与性状的关系示意图,据图回答:
通过①过程合成mRNA,在遗传学上称为()其主要场所是()
参考答案:转录;细胞核
解析:
通过①过程合成mRNA,在遗传学上称为转录,因为DNA主要存在于细胞核中,所以转录的主要场所是细胞核。
完形填空 | ||||
Two soldiers both seriously wounded in a war shared the same hospital room. One man was __1__ to sit up in his bed for an hour a day. His bed was next to the room's only window. The other man had to spend all his time lying on his back on the only other bed in the room. Every afternoon when the man by the window could sit up and describe what he saw outside the window, the man in the other bed would relive. The window __2__ a park with a lovely lake, the man had said. Ducks and swans played on the water while children __3__ their model boats. Hearing the description, the soldier on the other side of the room imagined the beautiful __4__ with his eyes closed. One warm afternoon, a strange thought __5__ the soldier: Why should his roommate have all the __6__ of seeing everything while he never got to see anything? It seemed __7__. The man felt ashamed at first, but gradually his __8__ turned into hatred and soon turned him bitter and angry. He found himself unable to sleep. He should be by that window and this only thought now __9__ his life. One day the man by the window died and the body was taken away. __10__ it seemed appropriate, the man asked the nurse if he could be moved next to the window. The nurse was happy to make the __11__ and after making sure he was comfortable, she left the room. Slowly and painfully, he supported himself on one elbow to take his first look out of the window. However, he saw nothing but a blank and dirty wall… So the pursuit of __12__ isn't a gift coming through the window. It's a positive attitude we consciously choose to express. Our circumstances are just a small part of what makes us joyful. If we wait for them to get it just right, we'll never find lasting joy. | ||||
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