题目

亲核蛋白是指在细胞质内合成后，需要或能够进入细胞核内发挥功能的一类蛋白质。亲核蛋白从细胞质输入细胞核的过程如下图所示，其中NLS是一种能够和亲核蛋白结合的特殊短肽，GTP是为细胞生命活动供能的一种高能磷酸化合物，分子结构和ATP类似。据图回答下列问题： （1）据图分析，亲核蛋白通过核孔进入细胞核，穿过_________层生物膜，为该过程提供能量的直接能源物质是_________。（2）研究发现NLS中某一个氨基酸的改变会导致亲核蛋白在细胞质Hand in a drawing of your favorite place in school and get a chance to win PRIZES!Your drawing may be a picure of the gate,the dining hall,the field,the classroom or even the toilet!Along with your picture,include a short description(3—5sentences)explaining why that place is special for you!All winning picture will be on show outside the school hall for the whole month of June!1st prize--$1002nd prize --$703nd prize -$505 Comfort prizes of $30 eachYour picture can be either or black-and-white.All drawings must be handed in to your Art teacher by May 30,2015.All LCPS students are encouraged to join!Organized by:Lion City Primary School (LCPS) Prizes sponsored(赞助)by:（Art Department） Lucky Books and Stationery【1】Which of the following would be a proper picture for the competition?【2】Besides your picture, you must write about _____.A.why you like the place so muchB. why drawing is your favorite hobbyC. whether you think you can winD. when you started learning to draw【3】According to the ad（广告）, all winners can get ____.A.a $100 prize B. a $70 prizeC. a favorite place in school D. their pictures on show【4】The competition is organized by ___________.A.an Art teacher B. LCPS Art DepartmentC. the headmaster D. Lucky Books & Stationery