相关概念视频
Proofreading
Synthesis of new DNA molecules starts when DNA polymerase links nucleotides together in a sequence that is complementary to the template DNA strand. DNA polymerase has a higher affinity for the correct base to ensure fidelity in DNA replication. The DNA polymerase furthermore proofreads during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.Errors during Replication Are Corrected by the DNA Polymerase EnzymeGenomic DNA is synthesized in...
Proofreading
Synthesis of new DNA molecules starts when DNA polymerase links nucleotides together in a sequence that is complementary to the template DNA strand. DNA polymerase has a higher affinity for the correct base to ensure fidelity in DNA replication. The DNA polymerase furthermore proofreads during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.Errors during Replication Are Corrected by the DNA Polymerase EnzymeGenomic DNA is synthesized in...
Termination of Translation
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
Termination of Translation
The large ribosomal subunit has several important structures essential to translation. These include the peptidyl transferase center (PTC) - which is the site where the peptide bond is formed - and a large, internal, water-filled tube through which the nascent polypeptide moves. This latter structure is called the Peptide Exit Tunnel, and it begins at the PTC and spans the body of the large ribosomal subunit. During translation, as the nascent polypeptide chain is synthesized, it passes through...
Proofreading
Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
Errors During Replication are Corrected by the DNA Polymerase Enzyme
Errors During Replication are Corrected by the DNA Polymerase Enzyme
Variance
The deviations show how spread out the data are about the mean. A positive deviation occurs when the data value exceeds the mean, whereas a negative deviation occurs when the data value is less than the mean. If the deviations are added, the sum is always zero. So one cannot simply add the deviations to get the data spread. By squaring the deviations, the numbers are made positive; thus, their sum will also be positive.The standard deviation measures the spread in the same units as the data.
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Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".
Science (New York, N.Y.)·2026
相关实验视频
Updated: Jun 25, 2026

12:02
Molecular Evolution of the Tre Recombinase
Published on: May 29, 2008
概括
这篇文章讨论了替代能源的未来,主张电力作为主要能源. 它强调了理解能源消耗趋势对于未来规划的重要性.
科学领域:
- 能源政策 能源政策
- 可持续能源 可持续能源
- 能源经济学 能源经济学
背景情况:
- 转向可持续能源是一个关键的全球性挑战.
- 电力在未来的能源系统中越来越重要.
- 准确的数据表示对于知情的能源政策讨论至关重要.
研究的目的:
- 倡导电力作为替代能源未来的关键组成部分.
- 提出支持电力情况的数据.
- 确保有关能源数据的科学沟通的清晰度和准确性.
主要方法:
- 对能源消耗趋势的分析.
- 专注于人均电力消耗 (kWh).
- 1972-1978年期间数据的图形表示.
主要成果:
- 图4说明了人均电力消耗的百分比增长.
- 数据涵盖了1972年至1978年的时间段.
- 修正后的标签澄清了图中显示的具体指标.
结论:
- 电力在替代能源战略中起着至关重要的作用.

