1.非选择题- (共1题)

(1)植物细胞中E主要是指________,它属于_______糖,基本单位是___________。
(2)F是指_________;除此之外,脂质还包括_______和 _______。相同质量的E和F都彻底氧化分解,释放能量较多的是______。
(3)C是指________, 共有_____种,其通式是 _____________________________。
(4)人的遗传物质H是指_________,其基本单位D是____________。
2.单选题- (共11题)
A.利用双缩脲试剂检测生物组织中的蛋白质 |
B.测定胃蛋白酶分解蛋白质的最适温度 |
C.利用重铬酸钾检测酵母菌培养液中的酒精 |
D.观察植物细胞的质壁分离和复原 |
A.肝糖原—葡萄糖—储存于肝脏细胞中的能源物质 |
B.胰岛素—氨基酸—促进组织细胞摄取和利用葡萄糖 |
C.tRNA—核糖核苷酸—转运特定的氨基酸到核糖体 |
D.抗体—氨基酸—与机体内各种抗原特异性结合 |
A.体内参与运输营养物质和代谢废物的水是自由水 |
B.某些无机盐是组成细胞内多糖的成分 |
C.生物体内无机盐浓度的大小会影响细胞的吸水或失水 |
D.自由水与结合水的比例随生物个体代谢的强弱而变化 |

A.催化①过程的酶是RNA聚合酶 |
B.④过程发生的变化是引物与单链DNA结合 |
C.催化②⑤过程的酶都是耐高温的DNA聚合酶 |
D.③过程需要高温和ATP供能才能完成 |
A.植物组织培养技术可用于转基因植物的培育 |
B.动物细胞培养技术可以克隆出动物个体 |
C.单克隆抗体技术可用于制备“生物导弹” |
D.蛋白质工程可以改造自然界现有的蛋白质 |
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.发酵过程需要密闭条件 | B.两菌种的代谢类型相同 |
C.CO2由两菌种共同产生 | D.两菌种间为互利共生关系 |
A.利用植物体细胞杂交可以获得多倍体植株 |
B.植物体细胞杂交技术就是原生质体融合过程 |
C.可根据质壁分离现象鉴别杂种细胞的细胞壁是否再生 |
D.可根据细胞中染色体数目和形态的差异鉴定杂种细胞 |
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.
4.实验题- (共1题)
(1)为分离果胶酶产生菌,科研人员配制了下表所示成分的培养基,该表空白处的两种成分是
K2HPO4 | MgSO4 | NaNO3 | FeSO4 | 琼脂 | | |
0.1g | 0.5g | 3g | 0.01g | 2g | 15g | 加至1L |
(2)科研人员将采集的果园土壤放入无菌水中,震荡混匀,制成悬液。为获得较均匀分布的单菌落,还需要将悬液进行
(3)选择单菌落数目适宜的培养基,加入一定浓度的刚果红溶液(果胶与刚果红结合后显红色),一段时间后洗去培养基表面的刚果红溶液,观察并比较菌落和
(4)将获得的菌株进行液体培养后,从培养液的
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【1】题量占比
非选择题:(1道)
单选题:(11道)
选择题:(1道)
实验题:(1道)
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【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:4
7星难题:0
8星难题:2
9星难题:7