皮皮学，免费搜题
登录
搜题
【单选题】
下列关于DNA分子结构的叙述，错误的是： [ ]A.
每个脱氧核糖均连接着一个磷酸和一个碱基分子
B.
每个DNA分子中碱基数=磷酸数=脱氧核糖数
C.
DNA分子是由两条反向平行的脱氧核苷酸长链盘旋而成的双螺旋结构
D.
DNA分子中脱氧核苷酸和磷酸交替排列在外侧，中间为氢键连接的碱基对
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Complete the following sentences with the words given below. Changethe form if necessary. A.lease B. ysis C. advertise D. converse E. paraphrase F. trajectory G. puzzle H. committee 1 If you wa...
【单选题】【D6】 BURNEY: THERE WERE TWO MEN, I THIN K. NO, THRE E. THEY RAN INTO THE BANK AND THE ONE WITH THE GUN, THE TALL ONE, HE RUNS UP TO THE WINDOW, AND STARTS SHOUTING SOMETHING, I DON' T KNOW, 'GIVE ME A...
A.
THEY HAD BEEN IN THERE FOR ABOUT 5 MINUTES.
B.
IT' S THE OTHER MAN I'M TALKING ABOUT,
C.
I THOUGHT YOU SAID THERE WERE THREE MEN?
D.
ARE THERE ANY WITNESSES ON THE SPOT?
【简答题】根据短文内容和首字母提示，在空格处填入适当的词使短文完整。（每空一词） Many years ago two men were traveling together. They were w 小题1: along a road in the wood. Suddenly they found a beautiful ax on the g 小题2: . One of them picked it ...
【单选题】【D5】 BURNEY: THERE WERE TWO MEN, I THIN K. NO, THRE E. THEY RAN INTO THE BANK AND THE ONE WITH THE GUN, THE TALL ONE, HE RUNS UP TO THE WINDOW, AND STARTS SHOUTING SOMETHING, I DON' T KNOW, 'GIVE ME A...
A.
THEY HAD BEEN IN THERE FOR ABOUT 5 MINUTES.
B.
IT' S THE OTHER MAN I'M TALKING ABOUT,
C.
I THOUGHT YOU SAID THERE WERE THREE MEN?
D.
ARE THERE ANY WITNESSES ON THE SPOT?
【简答题】task 1 选词填空 1 If you want to attract more customers, try _____on WeChat. 2 Try to ______each word and then translate it into Chinese. 3 The two men were _______ about music and opera. 4 The _______has...
【简答题】动词填空。 Two men were traveling in a lonely part of America. For days they 1___________ (not see) even a house, only a few wood huts (木房子). Then one day they 2____________ (meet) an old Indian. They hope...
【单选题】全等三角形又叫做合同三角形,平面内的合同三角形分为真正合同三角形与镜面合同三角形,假设△ABC和△A 1 B 1 C 1 是全等合同.三角形,点A与点A 1 对应,点B与点B 1 对应,点C与点C 1 对应,当沿周界A→B→C→A,及A 1 →B 1 →A 1 环绕时,若运动方向相同,则称它们是真正合同三角形如图,若运动方向相反,则称它们是镜面合同三角形如图,两个真正合同三角形都可以在平面内通过平...
A.
B.
C.
相关题目：