皮皮学，免费搜题
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搜题
【单选题】
下列对本首词分析鉴赏不正确的一项是( )
A.
“大江东去，尽，千古风流人物。 ”此句从滚滚东流的长江着笔，把滔滔东流的长江与名高累世的历史人物联系在一起，表想了一个极为广阔的悠远空间、时间背景。
B.
“乱石穿空，惊涛拍岸，卷起千堆雪。 ”此句一扫平庸萎靡的气氛，把读者带进了一个奔马轰雷、惊心动魄的奇险境界，使人心胸开阔、精神振奋。
C.
“ 故国神游 ，多情我，早生华发。人生如梦，一樽还酹月。” 作者由现实进入神游的境界，就不免思绪深沉，顿生感慨，而情不自禁地发出自笑多情、光阴虚掷的叹息了。
D.
这首词气势磅礴，格调雄浑，高唱入云，其境界之宏大是前所未有的。所以有人评论它“自由横槊气概，固是英雄本色”，堪称“千古绝唱”。
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【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.
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【多选题】What different functions do proteins have? ( )
A.
Structural support
B.
Storage
C.
Transport
D.
Movement
E.
Defense against foreign bodies
F.
Enzymes that speed up reactions
查看完整题目与答案
【单选题】What is NOT a key element of a balanced meal?
A.
Proteins.
B.
Fats.
C.
Vitamins.
D.
Sugar.
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【多选题】What physiological functions do proteins have?
A.
Build and repair body tissues
B.
Synthesize physiological substance
C.
Regulate body fluids and maintain PH balance
D.
Boost immunity
查看完整题目与答案
【单选题】The _______ are transmembrane proteins.
A.
lipid-anchored membrane proteins
B.
integral membrane proteins
C.
peripheral membrane proteins
D.
extracellular matrix proteins
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【单选题】What part of the cell makes proteins? ( )
A.
mitochondria
B.
ribosomes
C.
lysosomes
D.
vacuole
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【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.
查看完整题目与答案
【单选题】What is the secondary structure for proteins?
A.
coagulation of protein chains
B.
peptide bond between individual amino acid
C.
the helix that the protein chain curls into as a result of hydrogen bond and other weak forces
D.
when the protein moleculaes fold back on themselves outside of the helical segments
查看完整题目与答案
【判断题】对图中的每一条支路指定了参考方向的图称为有向图.( )
A.
正确
B.
错误
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【多选题】高等医学院校的主要职能是()。
A.
预防医学和临床教学
B.
培养高级医药专门人才
C.
开展医学科学研究
D.
进行各种形式的社会医疗卫生服务
查看完整题目与答案
相关题目：
【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.
查看完整题目与答案
【多选题】What different functions do proteins have? ( )
A.
Structural support
B.
Storage
C.
Transport
D.
Movement
E.
Defense against foreign bodies
F.
Enzymes that speed up reactions
查看完整题目与答案
【单选题】What is NOT a key element of a balanced meal?
A.
Proteins.
B.
Fats.
C.
Vitamins.
D.
Sugar.
查看完整题目与答案
【多选题】What physiological functions do proteins have?
A.
Build and repair body tissues
B.
Synthesize physiological substance
C.
Regulate body fluids and maintain PH balance
D.
Boost immunity
查看完整题目与答案
【单选题】The _______ are transmembrane proteins.
A.
lipid-anchored membrane proteins
B.
integral membrane proteins
C.
peripheral membrane proteins
D.
extracellular matrix proteins
查看完整题目与答案
【单选题】What part of the cell makes proteins? ( )
A.
mitochondria
B.
ribosomes
C.
lysosomes
D.
vacuole
查看完整题目与答案
【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.
查看完整题目与答案
【单选题】What is the secondary structure for proteins?
A.
coagulation of protein chains
B.
peptide bond between individual amino acid
C.
the helix that the protein chain curls into as a result of hydrogen bond and other weak forces
D.
when the protein moleculaes fold back on themselves outside of the helical segments
查看完整题目与答案
【判断题】对图中的每一条支路指定了参考方向的图称为有向图.( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】高等医学院校的主要职能是()。
A.
预防医学和临床教学
B.
培养高级医药专门人才
C.
开展医学科学研究
D.
进行各种形式的社会医疗卫生服务
查看完整题目与答案