Your cells have to divide when you’re growing, to heal wounds, and to replace dead cells. But how do cells know when to divide and when not to divide? We can’t have cells just growing willy-nilly! That’s what cancer is, and that’s bad. Luckily, cells obey something called the cell cycle, which is regulated by a variety of signaling molecules, which tell the cell when to divide and when to chill out. Let’s look at the phases […]
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In this AP Daily: Live Review session for AP Biology, we will review gene expression and regulation, including nucleic acids & their role in gene expression. We look at replication, transcription, RNA processing & translation. We’ll highlight four topics in Unit 6: Gene Expression and Regulation. We start with Topic 6.2: Replication to examine the mechanisms by which genetic information is copied for transmission between generations will be reviewed. We will discuss how to explain relationships between […]
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We learned about gene expression in biochemistry, which is comprised of transcription and translation, and referred to as the “central dogma” of molecular biology. But how is this process regulated? How does a cell know which genes to express and when? Well it’s pretty complicated, but let’s just get our feet wet by looking at operons, epigenetics, and transcription factors! Watch the whole Biology/Genetics playlist: General Chemistry Tutorials: Organic Chemistry Tutorials: Biochemistry Tutorials: Anatomy & Physiology Tutorials: […]
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Explore gene expression with the Amoeba Sisters, including the fascinating Lac Operon found in bacteria! Learn how genes can be turned “on” and “off” and why this is essential for cellular function. Check out our FREE video handouts on The Amoeba Sisters videos demystify science with humor and relevance. The videos center on Pinky’s certification and experience in teaching biology at the high school level. For more information about The Amoeba Sisters, visit: REFERENCES: We cover the […]
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