1.非选择题- (共1题)
(1)细胞中含有N元素的生物大分子是 (____________)
A.核苷酸和糖原 |
B.胰岛素和核酸 |
C.氨基酸和二肽酶 |
D.血红蛋白和纤维素 |
(3)构成细胞膜的脂质有___________。癌细胞转移与细胞膜上_____________减少有关。
(4)活细胞中含量最多的化合物是______________;组成蛋白质的氨基酸至少含有一个氨基和一个羧基,并且______________。
(5)DNA和RNA这两类核酸在化学组成上的区别是_____________________。
2.单选题- (共4题)
A.DNA与ATP中所含元素的种类相同 |
B.T2噬菌体的核酸由核糖核苷酸组成 |
C.一个tRNA分子中只有一个反密码子 |
D.控制细菌性状的基因位于拟核和质粒中的DNA上 |
A.疟原虫的细胞与人的成熟红细胞具有的生物膜种类相同 |
B.疟原虫的细胞内自噬泡与细胞膜的融合体现细胞膜的功能特点 |
C.在青蒿素的作用下,疟原虫细胞内能量的供应机制受到影响 |
D.在青蒿素的作用下,红细胞运输营养物质的速率明显下降 |
A.醋酸菌在无氧条件下利用乙醇产生醋酸 |
B.酵母菌在无氧条件下利用葡萄糖汁产生酒精 |
C.泡菜腌制利用了乳酸菌的乳酸发酵 |
D.腐乳制作利用了毛霉等微生物的蛋白酶和脂肪酶 |
A.前者需要保持恒温,后者不需要恒温 |
B.前者容易蒸发,后者不容易蒸发 |
C.胡萝卜素不耐高温,玫瑰精油耐高温 |
D.前者烧瓶里含有机溶剂,易燃易爆,后者是水 |
3.选择题- (共1题)
How to Become an Activist (活动家)
Activists are people who see the need for change and devote their time to doing something about it.{#blank#}1{#/blank#}If you are interested in it you can do so.
{#blank#}2{#/blank#}This could be anything from a student club to a national organization (like the American Civil Liberties Union or the National Organizers Alliance). Most activist organizations offer different levels of involvement, so you can do whatever you feel most comfortable with, whether that means attending meetings and demonstrations or just donating a little money when you can.
Volunteer your time. One of the best ways to make a difference is to volunteer your time. Reach out to organizations in your community that do work for your cause, and ask how you can help.
Donate money or supplies.{#blank#}3{#/blank#}If you can't afford to donate money to an organization that supports your cause, you may be able to donate other things they need, like clothing or canned food.
Reach out to family and friends. Tell your family and friends about your cause, and invite them to get involved. If they are interested, share literature about your cause or just talk to them about what you have learned.{#blank#}4{#/blank#}
Promote your cause on social media. You can use social media to help keep your friends and followers informed about the causes you support.{#blank#}5{#/blank#}Also, you can invite your friends to attend events or donate to fundraisers for your cause.
A. Take classes on issues related to your cause.
B. Join an organization that supports your cause.
C. They are driven by passion and a vision for a better future.
D. If you do volunteer work, invite them to volunteer with you.
E. Most activists or charitable organizations need resources to do their work.
F. Post useful articles and write about what you are doing to stay involved.
G. If you can't reach out to them in person, then try connecting to people online.
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【1】题量占比
非选择题:(1道)
单选题:(4道)
选择题:(1道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:2
7星难题:0
8星难题:1
9星难题:2