2020 发育生物学(沈阳农业大学) 最新满分章节测试答案

本答案对应课程为:点我自动跳转查看
本课程起止时间为:2020-02-23到2020-06-30
本篇答案更新状态:已完结

【作业】第一章 课程介绍 第一章 课后作业

1、 问题:1.发育生物学定义。
评分规则: 【 概念回答完整、正确。
】

【作业】第一章 课程介绍 第一章 课后作业

1、 问题:举例说明胚胎发育的重要性。
评分规则: 【 符合题目要求，叙述完整正确。
】

【作业】第一章 课程介绍 查阅文献资料

1、 问题:了解老师推荐的4本书，根据个人情况进行阅读。选择一个完整内容绘制思维导图。要求：1.A4纸绘制。           2.内容尽量详尽。
评分规则: 【 按要求规定书写
】

第二章 基本概念 第二章测试

1、 问题:Which of the following is a germ cell?
选项：
A:cells of the gonads
B:intestinal cells
C:sperm and eggs
D:zygotes
答案: 【sperm and eggs】

2、 问题:Which of the following basic developmental processes is most dependent on cellular movements?
选项：
A:cell differentiation
B:growth
C:morphogenesis
D:pattern formation
答案: 【morphogenesis】

3、 问题:A morphogen is
选项：
A:a cell or group of cells that signal other cells to become determined in a specific way
B:a gene that causes a cell or group of cells to adopt a particular shape
C:a signaling molecule that causes the differentiation of neighboring cells
D:a signaling molecule that confers concentration-dependent positional information
答案: 【a signaling molecule that confers concentration-dependent positional information】

4、 问题:What distinguishes stem cells from other cell types?
选项：
A:Although all cell types can divide, only stem cells differentiate after division.
B:Stem cells are able to divide to produce populations of cells that differentiate into a related set of cells.
C:Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.
D:Stem cells have a special type of cell division in which they form small stems that then pinch off to give rise to the daughter cell.
答案: 【Stem cells divide asymmetrically to give rise to one daughter cell that remains a stem cell, and a second daughter cell that differentiates into one or more cell types.】

【作业】第二章 基本概念 第二章作业

1、 问题:The Greek philosopher Aristotle considered two opposing theories for development: preformation and epigenesis. Describe what is meant by these two ideas.
评分规则: 【 先成论包括古典先成论和改良先成论：古典先成论：胚胎中的一切都是从一开始就形成的，仅在发育过程中逐渐长大；改良先成论：除遗传子外，没有其它任何东西。后成论：胚胎中的新结构是逐渐形成的。现代细胞生物学奠定了“后成论”的基础：生殖细胞和胚胎细胞的相互作用，包括直接接触和信号传递，通过调控基因的差异化表达，调控了了细胞增殖、迁移、分化，导致了细胞的差别分化。
】

【作业】第三章 脊椎动物生命周期和发育概要 第三章 名词解释

1、 问题:Phylotypic stage胚孔原条
评分规则: 【 Phylotypic stage
胚孔
原条
】

2、 问题:简要叙述爪蟾早期胚胎发育过程。
评分规则: 【 表述清楚
内容完整
】

第三章 脊椎动物生命周期和发育概要 第三章测试

1、 问题:Which of the following is a vertebrate ‘model organism’ used in the study of development?
选项：
A:Drosophila melanogaster
B:Homo sapiens
C:Caenorhabditis elegans
D:Xenopus laevis
答案: 【Xenopus laevis】

2、 问题:The nervous system, heart, and liver are derived from (   ), (   ), and (    ), respectively.
选项：
A:all are derived from mesoderm
B:ectoderm, mesoderm, and endoderm
C:endoderm, mesoderm, and ectoderm
D:mesoderm, ectoderm, and endoderm
答案: 【ectoderm, mesoderm, and endoderm】

第四章 体轴建立 第四章测试

1、 问题: The ‘organizer’ in Xenopus is responsible for
选项：
A:inducing a mesodermal fate in nearby cells
B:helping to pattern the mesoderm along the dorso-ventral axis
C:specifying the dorsal region of the embryo
D:all of these events
答案: 【helping to pattern the mesoderm along the dorso-ventral axis】

2、 问题:A key factor that specifies the organizer in Xenopus embryos is:
选项：
A:GSK-3β
B:Fz7
C:Wnt-11
D:β-catenin
答案: 【β-catenin】

3、 问题:Maternal factors are
选项：
A:the energy-rich yolk present in the eggs of many species
B:the genes contributed to the embryo by the maternal haploid genome
C:the genes expressed by the zygotic genome in the egg
D:developmentally active mRNAs and proteins packaged into the egg by the mother
答案: 【developmentally active mRNAs and proteins packaged into the egg by the mother】

4、 问题:The positioning of the dorso-ventral axis in Xenopus is deter mined by (   ), while the positioning of the antero-posterior axis in chicks is deternined by (   ).
选项：
A:gravity; point of sperm entry
B:maternal factors in both cases
C:position in the egg chamber; gravity
D:the point of sperm entry; gravity
答案: 【the point of sperm entry; gravity】

第五章 胚胎来源和特化 第五章测试

1、 问题:If cells from the animal pole of a Xenopus blastula (animal cap cells) are placed in direct contact with cells from the vegetal region, what is the result?
选项：
A:An embryo forms with only ectodermal and endodermal derivatives.
B:Animal cap cells are induced by the vegetal cells to form meso dermal derivatives.
C:The embryo regulates and forms a normal embryo.
D:Vegetal hemisphere cells are induced by the animal cap cells to form mesodermal derivatives.
答案: 【Animal cap cells are induced by the vegetal cells to form meso dermal derivatives.】

2、 问题:Vg-1, Nodals, BMPs and activin are all members of which family of signaling molecules?
选项：
A:FGF
B:Hedgehog
C:TGF-β
D:Wnt
答案: 【TGF-β】

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