When a signal from outside the cell changes the rate of gene transcription, this is known as regulated transcription. Transcription of a gene can occur at varying rates. Here we look at the stages of mitosis, as well as how the cell finally splits to form two new cells. Mitosis is the process of dividing the duplicated DNA of a cell into two new nuclei. It occurs in all plants and animals that reproduce by way of gametes or spores. Meiosis is a type of cell division involved in sexual reproduction. This animation provides an overview of the energy consumed and produced by the pathway. Glycolysis is a series of 10 reactions that converts sugars, like glucose, into 3-carbon molecules called pyruvate. This animation takes a closer look at those reactions and the enzymes that catalyze them. Glycolysis oxidizes one molecule of glucose into two molecules of pyruvate through a series of 10 enzymatic reactions. This animation provides an overview of the pathway and its products. In the matrix of the mitochondrion, the Citric Acid Cycle uses Acetyl CoA molecules to produce energy through eight chemical reactions. This animation provides a closer look at the eight reactions that make up this important pathway. The Citric Acid Cycle goes by several names, including the Tricarboxylic Acid (TCA) Cycle and the Krebs Cycle. These interrelated events are crucial to the success of life on Earth. This overview of the various processes involved in Energy Consumption shows the important connections between the plant and animal worlds. The Virtual Cell Animation Collection was featured in Cell Biology Education Click here to read the article and download the included PDF file.
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