下列关于核酸分子杂交的叙述哪一项是错误的() A.DNA单链也可与相同或几乎相同的互

题型:单项选择题

问题:

下列关于核酸分子杂交的叙述哪一项是错误的()

A.DNA单链也可与相同或几乎相同的互补碱基RNA链杂交形成双螺旋

B.不同来源的两条单链DNA,只要它们有大致相同的互补碱基顺序,它们就可以结合形成新的杂交DNA双螺旋

C.RNA链可与其编码的多肽链结合形成杂交分子

D.杂交技术可用于核酸结构与功能的研究

E.杂交技术可用于基因工程的研究

考点:临床医学检验临床免疫临床生物化学临床生物化学题库
题型:单项选择题
Once in a small village faraway, there was a place known as the House of 1000 Mirrors.
A happy little dog learned about this place and decided to visit. When he arrived, he bounced(跳跃)happily up the stairs to the doorway of the house. He looked through the doorway with his__ __lifted high and his tail wagging(摇摆) as fast as it could. To his great_ ___, he found himself staring(盯) at 1000 other happy little dogs with their tails wagging just as fast as his. He smiled a great smile, and was          with 1000 great smiles. As he left the House, he thought to himself, “This is a very       place. I will come back and visit it____.”
In the same village, another little dog , who was not quite as____as the first one, decided to visit the house. He slowly climbed the stairs and hung his head low as he       into the door. When he saw the 1000 unfriendly-looking dogs staring back at him, he growled(咆哮) at them and was horrified(惊恐的) to see 1000 little dogs growling back at him. As he left, he thought to himself, “That is a horrible place, and I will never go back____again.”
All the____in the world are mirrors. What kinds of reflections(反射) do you see in the faces of people you       ?
小题1:
A.eyesB.earsC.noseD.mouth
小题2:
A.joyB.disappointmentC.surpriseD.sadness
小题3:
A.answeredB.servedC.sentD.returned
小题4:
A.specialB.lonelyC.strangeD.wonderful
小题5:
A.oftenB.sometimesC.seldomD.always
小题6:
A.healthyB.tallC.happyD.little
小题7:
A.knockedB.lookedC.wentD.ran
小题8:
A.thereB.hereC.the mirrorsD.the House
小题9:
A.peopleB.facesC.housesD.dogs
小题10:
A.knowB.meetC.talk toD.make friends with
题型:单项选择题

某一经济在5年中,货币增长速度为10%,而实际国民收入增长速度为12%,货币流通速度不变。这5年期间价格水平将()

A、上升

B、下降

C、不变

D、上下波动

题型:单项选择题

某厅处长老谢认为,现在财政风险不断增大,主要原因是国有金融机构的不良资产导致的损失、国有企业资产负债率普遍偏高、社会保障的空账风险增大,要化解财政风险,最好的办法就是私有化、市场化。

题型:单项选择题

阅读下列材料:材料一:季康子问政于孔子曰:“如杀吾道,以就有道,何如?”孔子对曰:“子为政,焉用杀?子欲善而民善矣,君子之德风,小人之德草,草上之风,必偃。”――《论语·为政》

材料二:(董)仲舒复对曰:“……春秋大一统者,天地之常经,古今之通谊也。今师异道,人异论,百家珠(异)方,指意不同,是以上亡(无)以持一统。法制数变,下不知所守。臣愚以为诸(那些)不在六艺(六经)之科、孔子之术者,皆绝其道,勿使并进。邪避之说灭息,然后统纪可一(一致)而法度可明,民知所从矣。”

――《汉书·董仲舒传》

材料三:至论天下之理,则要妙精微,各有攸当。亘古亘今,不可移易,唯古之圣人为能尽之。而其所行所言,无不可为天下后世不易之大法。――(南宋)朱熹《行宫便殿奏札》

材料四:前三代,吾无论矣;后三代,汉、唐、宋是也。中间千百余年而独无是非者,岂其人无是非哉?咸以孔子之是非为是非,故未尝有是非耳。――(明)李贽《藏书》

请回答:

根据材料三、四指出李贽的观点同朱熹的观点有何不同。这种不同主要说明了什么问题?

题型:单项选择题

筛检致癌物最广泛和最敏感的致突变试验是()

A.微核试验

B.SCE试验

C.显性致死试验

D.Ames试验

E.SCGE试验

更多题库