当前位置:首页 » 考试培训 » SAT/ACT » SAT II
SAT2生物考试中常用词汇总结(D开头)
来源:毕达教育 发布时间:2012-01-06 17:23:07
下面为大家整理的是以字母D开头的SAT2生物考试中常用词汇。掌握一定的生物词汇是备考SAT2的首要前提。所以,各位考生一定要多加重视词汇的积累,预祝各位考生考试成功。
Darwin, Charles(达尔文)
English naturalist (1809–1882) who proposed the modern theory of evolution through natural selection.
Darwin traveled aboard the HMS Beagle to the Galápagos Islands, where his revolutionary observations
took shape.
Decomposer(分解者)
Organisms that consume waste products and dead organic material and constitute part of the food web,
which also includes producers and consumers. Also called saprophytes. Decomposers liberate inorganic
elements such as nitrogen and carbon and allow those elements to move back into their respective
chemical cycles. Examples of decomposers are bacteria and fungi.
dehydration synthesis(脱水缩合)
A common biochemical reaction in which a new compound is formed by the joining of two compounds
to release water. Occurs in the synthesis of polysaccharides and polypeptides. The reverse of hydrolysis.
deoxyribonucleic acid (DNA/脱氧核糖核酸)
A type of nucleic acid polymer built from sugar-phosphate backbones and nitrogenous bases.
DNA’s sugar, deoxyribose, has one fewer oxygen atom than ribose, found in RNA. The nitrogenous
bases adenine, cytosine, guanine, and thymine are used in DNA.
Dicot(双子叶)
A flowering plant (angiosperm) that possesses two cotyledons during embryonic development.
Usually has taproots, flower parts in multiples of fours and fives, and branching veins in leaves.
Diffusion(扩散)
The transport or natural drift of molecules traveling from an area of higher concentration to an area
of lower concentration. Diffusion does not require outside energy from the cell.
digestive system(消化系统)
The system of organs that converts food to usable nutrients through mechanical and chemical
breakdown. Important components of the system are the alimentary canal, glands, esophagus,
stomach, small intestine, large intestine, and rectum.
diploid number(双倍目)
The total number of chromosomes present in a somatic cell. The diploid number is twice the haploid
number. In humans, the diploid number is 46.
Disaccharide(双糖)
A sugar compound consisting of two carbohydrate monomers.
Dominant(显性【尤指基因显性】)
Refers to an allele that controls the phenotype even when a different allele is also present, as in a
heterozygote. Can also refer to the trait or phenotype produced by a dominant allele. Also known
as Mendel’s law of dominance, based on Gregor Mendel’s observations that when two purebred
individuals with different forms of the same trait are mated, only one of the two forms appears in
the first generation of offspring. Mendel called the apparent form dominant and the suppressed
form recessive.
以上就是关于SAT2生物考试常用词汇的全面内容,是以D开头的。各位考生可以作为备考时的参考资料,希望对各位考生的SAT2考试有所帮助。
相关文章
- SAT2考试报了3门,但只想考2门,可以吗...
- Peterson SAT2数学备考教材下载
- 美国加州大学取消SAT2
- SAT2考试科目详细介绍
- SAT考试之SAT1与SAT2考试区别
- SAT考试计分规则
- SAT语法的10个固定搭配
- SAT考试成绩寄送必知的常识
- Biological/Agricultural | 生物/农业工程
- 生物统计转专业申请获得Durham University金融硕...
- 生物背景的她与TOP20金融名校的距离并不遥远...
- 生物统计学就业出路及制药行业详情...
- 统计学和生物统计学的区别
- 加州大学系统生物信息学项目大汇总...
- 生物纳米/生物物理申请小结
- SAT2生物考试中常用词汇总结(A开头)...
- 托福听力考试中常见习语(下)
- 留学美国面签考试技巧
- gre数学考试常见问题解读攻略
- GMAT考试常见问题解析
- SSAT考试常见问题汇总
- SSAT考试常见问题总结
- ACT考试全面解析
- ACT考试科学推理部分的解题技巧讲解...
相关推荐
- SAT2考试科目简介
- SAT2物理考试中常用词汇总结(F开头)...
- SAT2数学考试知识点汇总
- SAT2数学考试练习题
- SAT2数理化考试要求
- SAT2考试什么时间考比较好?
- SAT2物理考试中常用词汇总结(G开头)...
- SAT2生物考试中常用词汇总结(B开头)...
- SAT2生物考试中常用词汇总结(N开头)...
- SAT2生物考试中常用词汇总结(O开头)...
- SAT2生物考试中常用词汇总结(P开头)...
- 13年美国大学排名 生物与农业工程专业排名...
- SAT2生物考试中常用词汇总结(R开头)...
- 美国大学生物与农业工程专业本科排名...
- SAT2生物考试中常用词汇总结(S开头)...
- SAT2生物考试中常用词汇总结(T开头)...
- SAT考试注册姓名填写注意事项
- SAT考试准考证的打印问题
- 2011年新托福考试写作预测
- 2011年新托福考试真题预测
- GRE考试前应该准备什么证件?
- GRE考试退考方法介绍
- GMAT数学考试中常见公式总结
- GRE考试数量部分难点解析

![]() |
毕达北京:010-82486303 |
毕达广州:020-87566672 | 毕达上海:021-6390 6767 |

更多资料下载
