DNA在彻底水解后得到的产物为_刷题宝

题干

DNA在彻底水解后得到的产物为（　　）

A：四种脱氧核苷酸

B：四种核糖核苷酸

C：核糖、磷酸和四种碱基

D：脱氧核糖、磷酸和四种碱基

上一题下一题 0.0难度选择题更新时间:2017-08-10 12:01:15

答案(点此获取答案解析）

D

同类题1

除去下列物质中的少量杂质，所选试剂及操作都正确的是 ( )

	物质	杂质	试剂	操作
A	MgCl₂溶液	HCl	过量NaOH	过滤
B	CO₂	H₂O	NaOH固体	干燥
C	H₂O	悬浮物	明矾	吸附、过滤
D	NaNO₃溶液	NaCl	过量AgNO₃溶液	过滤

同类题2

下图分别代表了四种气候带的景观图。下列搭配正确的是（）

同类题3

下列属于天然气评价的叙述，正确的是（  ）
①开采成本低    ②使用不方便   ③开采、储运难度大  ④使用方便
⑤技术要求高     ⑥价格便宜     ⑦储存、运输方便   ⑧燃烧效率高
⑨废气、废渣排放量大   ⑩投资大、回收周期长

同类题4

–I have made a decision to spend my holiday at the beach.
– ______. I’m sure you’ll have a good time.

同类题5

读一读，判断正(T)误(F)。

It's sunny today. Peter and his friendshave a picnic in the park. They're very happy. Peter: What do you have, Joe?

Joe: I have someapples. They are so sweet. What about you, Peter?

Peter: I havesome cakes, some biscuits and some fruit juice.

Kitty: Wow! Ihave some sweets and some bread. Would you like some bread, Alice?

Alice: Sure, Ilike bread very much. And I have a kite. Then we can fly a kite.

Peter: OK,let's have our picnic now.

Kitty: Goodidea!

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