【简答题】(2018· 安徽江淮十校高三第三次联考 ) 每个生物大分子都拥有特定的结构与功能,结构分子生物学就是研究生物大分子特定的空间结构及结构的运动变化与其生物学功能关系的科学。下列有关生物大分子结构与功能的说法,正确的是 ( ) A .细胞中的遗传物质主要是 DNA ,还有 RNA B .纤维素是植物体的结构成分,还是其供能物质 C .蛋白质是细胞的结构成分,还能调控细胞代谢 D .糖原水解生成葡萄糖...
【简答题】Directions: Fill in the blanks in the following paragraph with the exact words that appear in your textbook. Fill in each blank with only ONE word. Xiang Yu was a Chinese Imperial general in the third...
【单选题】听力原文:W: Hey, why's your foot bandaged up? What happened? M: I was going to be late for work this morning, so I had to hurry. I was trying to get down the stairs quickly and I slipped and twisted my an...
A.
Because he twisted his ankle the night before.
B.
Because the battery in his alarm clock had run out of electricity.