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【单选题】
呼吸道分泌物中有抗病毒和抗细菌作用的免疫球蛋白是()。A.
IgA
B.
IgG
C.
Ig E
D.
IgM
E.
IgD
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皮皮学刷刷变学霸
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【简答题】患者，女性，46岁，因下腹痛和腹泻日渐加重入院。行剖腹探查术，见大网膜下部有直径约8cm的扁平肿块，余腹膜上散在有多数小结节。子宫及附件正常，消化道未见肿瘤。肿瘤组织镜下观察，呈现腺管、乳头状结构，并见有大小不等的腺管样腔隙，被覆单层扁平上皮或立方上皮，瘤细胞体积较大，胞质呈嗜酸性，核呈泡状。部分区域瘤细胞增生活跃，聚集成堆，细胞异型性明显，可见较多病理性核分裂象。免疫组化染色：Calretini...
【多选题】What are posttranslational modifications of proteins ?
A.
In addition to folding properly, many proteins—once they leave the ribosome—require further adjustments before they are useful to the cell. Namely, many proteins require posttranslational modifications (PTMs) to become fully functional.
B.
To be useful to the cell, a completed polypeptide must fold correctly into its three-dimensional conformation and then bind any required cofactors and protein partners—all via noncovalent bonding.
C.
Many proteins also require one or more covalent modifications to become active—or to be recruited to specific membranes or organelles.
D.
Although phosphorylation and glycosylation are the most common, more than 100 types of covalent modifications of proteins are known.
【单选题】血浆有很好的综合治疗价值，可用于抗休克、纠正凝血异常、解毒等。关于其使用指征下面说法不正确的是
A.
大量输血且伴有出血倾向者
B.
肝衰竭伴出血者
C.
凝血因子V或X缺乏有出血者
D.
用于置换疗法治疗某些疾病
E.
每单位(200～250ml)FFP可使成人增加约10%凝血因子
【单选题】What is NOT a key element of a balanced meal?
A.
Proteins.
B.
Fats.
C.
Vitamins.
D.
Sugar.
【简答题】胃癌的组织学分型有:1_____________2_____________3_____________4_____________
【简答题】【材料】 自2010年中央一号文件首次明确提出“新生代农民工”概念以来，“新生代农民工”群体一直是社会各界关注的热点，也是2010年“两会”上代表、委员们热议的话题。 “新生代农民工，说实话我挺佩服他们，与我们这些上世纪70年代出生的农民工相比，他们身上具有很多值得珍视的优点，”全国首位农民工代表胡小燕说。 胡小燕代表认为，与改革开放前期和中期的农民工大军相比，新一代农民工受教育程度明显提高，眼界...
【多选题】What is the structure of the SMC proteins (structural maintenance of chromosomes)?
A.
The primary structure of SMC proteins consists of five distinct domains.
B.
The amino- and carboxyl-terminal globular domains, N and C, each of which contains part of an ATP-hydrolytic site, are connected by two regions of α-helical coiled-coil motifs joined by a hinge domain.
C.
The proteins are generally dimeric, forming a V-shaped complex that is thought to be tied together through the protein’s hinge domains.
D.
One N and one C domain come together to form a complete ATP-hydrolytic site at each free end of the V.
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