Cell and molecular biology khan academy6/21/2023 ![]() By controlling the level of transcription, this process can determine when and how much protein product is made by a gene. These proteins bind to regulatory regions of a gene and increase or decrease the level of transcription. Signals from the environment or from other cells activate proteins called transcription factors. Explore the basics of molecular biology, including proteins, carbohydrates, lipids, and nucleic acids, water, and other compounds that make up the cell, with an emphasis on the cell membrane, mitosis and meiosis, genetics and gene expression, transcription and translation, and cellular metabolism. Gene regulation can occur at any point during gene expression, but most commonly occurs at the level of transcription (when the information in a gene’s DNA is passed to mRNA). Eukaryote cells are different and inherently more complex, as they possess specialized compartments called organelles. Although we know that the regulation of genes is critical for life, this complex process is not yet fully understood. The former is the more simplistic type of cell, which has its genetic material, cytoplasm, and ribosome particles all in one big cell, not divided by any internal walls or having any dedicated functions (Khan Academy, 2018). Gene regulation also allows cells to react quickly to changes in their environments. When a cell in the body divides, it will pass on a copy of its DNA to. Genes are turned on and off in different patterns during development to make a brain cell look and act different from a liver cell or a muscle cell, for example. DNA and genomes DNA (deoxyribonucleic acid) is the genetic material of living organisms. Gene regulation is an important part of normal development. The process of turning genes on and off is known as gene regulation. The rest of the genes are repressed, or turned off. Támogasd munkánkat, vagy jelentkezz önkéntesnek most Navigáció a honlapon. ![]() Each cell expresses, or turns on, only a fraction of its genes at any given time.
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