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Updated: Jul 6, 2026

Biochemical Titration of Glycogen In vitro
07:16

Biochemical Titration of Glycogen In vitro

Published on: November 24, 2013

核糖体生物发生:一个巨大的问题巨大的步骤

Ted Powers1

  • 1Section of Molecular and Cellular Biology and Center for Genetics and Development, Division of Biological Sciences, University of California, Davis, CA 95616, USA.

Cell
|December 29, 2004
PubMed
概括

托尔信号网络通过酵母中的转录因子FHL1调节核糖体蛋白基因表达. 这一发现澄清了TOR如何根据环境信号控制核糖体的产生.

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What is Glycolysis?00:56

What is Glycolysis?

Overview
Cells make energy by breaking down macromolecules. Cellular respiration is the biochemical process that converts "food energy" (from the chemical bonds of macromolecules) into chemical energy in the form of adenosine triphosphate (ATP). The first step of this tightly regulated and intricate process is glycolysis. The word glycolysis originates from the Latin glyco (sugar) and lysis (breakdown). Glycolysis serves two main intracellular functions: generating ATP and generating...
Energy-requiring Steps of Glycolysis01:20

Energy-requiring Steps of Glycolysis

Glucose is the source of nearly all energy used by organisms. The first step of converting glucose into usable energy is called glycolysis. Glycolysis occurs in the cytosol of the cell over two phases: an energy-requiring phase and an energy-releasing phase. Over the first three steps, glucose is converted into different forms and attached to two phosphate groups donated by two ATP molecules, resulting in an unstable sugar. In the next two stages, the unstable sugar splits into two sugar...
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Sugars as Energy Storage Molecules

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Glycolysis: Pay-off Phase01:25

Glycolysis: Pay-off Phase

So far, glycolysis has cost the cell two ATP molecules and produced two small, three-carbon sugar molecules. These molecules will proceed through the second half of the pathway, and sufficient energy will be extracted to pay back the two ATP molecules used as an initial investment and produce a profit for the cell of two additional ATP molecules and two even higher-energy NADH molecules.
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The first phase of glycolysis has 5 steps where the glucose is...
Sugars as Energy Storage Molecules01:10

Sugars as Energy Storage Molecules

Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
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Overview of Carbohydrate Metabolism

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