影响酶催化反应速率的因素有温度、反应物浓度、酶的浓度等。右图表示在最适温度下，某种酶的催化反应速率与反应物浓度之间的关系。有关说法正确的是（）_刷题宝

题干

影响酶催化反应速率的因素有温度、反应物浓度、酶的浓度等。右图表示在最适温度下，某种酶的催化反应速率与反应物浓度之间的关系。有关说法正确的是（）

A：若在B点增加酶的浓度，反应速率会减慢

B：若在A点提高反应温度，反应速率会加快

C：若在C点增加反应物浓度，反应速率将加快

D：若在A点增加反应物浓度，反应速率将加快

上一题下一题 0.0难度选择题更新时间:2019-05-12 03:29:12

答案(点此获取答案解析）

D

同类题1

名著阅读。

同类题2

给划线字选择字义

“担”字的意思有：A．用肩膀挑。B．担任、担负、负责、承当。C．扁担，挑东西的用具。D．担负的责任。E．量词，多指一百斤。

①博物馆里珍藏着战争年代朱德总司令上山挑粮用过的扁担。____

②一个青年农民担着两筐青菜。____

③那些日子，采桑叶的担子就落到父亲的肩上。____

④共产党员应该担当重任。____

同类题3

酒店自动旋转大门控制系统中的控制器是（）

同类题4

I am Brad. I like scary movies and action movies. My favorite movie star is Jackie Chan. I think Jackie Chan is a great actor. He has a movie Who am I? It's a very successful action movie. It's exciting.

My name is Kelly. I am a girl. I like comedies and soap operas, but I don't like scary movies. I think they are scary. I think Beijing Opera is educational. On weekend, I often go to see it with my father. I can learn a lot about Chinese history.

I am Carlos. My favorite cartoon star is Mickey. I think Mickey Mouse is a great cartoon. I also like scary movies. I think they are very exciting.

I'm a girl. My name is Mary. On weekends, I often watch cartoons and talent shows on TV. I think they are wonderful and relaxing. I don't like sitcoms. They are boring.

根据表格内容，选择最佳答案。

同类题5

——How do you fee1 about the new film?—— I don't like the end.

小学学科试题库

初中学科试题库

高中学科试题库