04 Plasma Membrane, Cell Membrane

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<div class="span index">1</div> <span><a class="" data-remote="true" data-type="html" href="/series/this-is-womans-work-with-nicole-kalil">This Is Woman's Work with Nicole Kalil</a></span>

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This Is Woman's Work with Nicole Kalil

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Together, we're redefining what it means, looks and feels like, to be doing "woman's work" in the world today. With confidence and the occasional rant. From boardrooms to studios, kitchens to coding dens, we explore the multifaceted experiences of today's woman, confirming that the new definition of "woman's work" is whatever feels authentic, true, and right for you. We're shedding expectations, setting aside the "shoulds", giving our finger to the "supposed tos". We're torching the old playbook and writing our own rules. Who runs the world? You decide. Learn more at nicolekalil.com

منذ عام واحد 7:58

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Join us in this BioSpeak episode as we take a look at the structure and essential functions of the plasma membrane, also known as the cell membrane. We discuss its role as a semi-permeable barrier that protects cells and facilitates transport, signaling, and communication with the environment. Learn about the composition of the plasma membrane, including phospholipids, cholesterol, proteins, and saccharides, and how they work together to maintain cell integrity and function. Discover the mechanisms of passive and active transport that regulate molecular movement, and understand how saccharides act as identity tags for cells in immune responses. We also explore the role of plasmodesmata in plant cells for substance exchange and communication.

12 حلقات

#Science #Biology #Germany #biospeakcast

BioSpeak

04 Plasma Membrane, Cell Membrane

BioSpeak

published منذ عام واحد

MP3•منزل الحلقة

12 حلقات

#Science #Biology #Germany #biospeakcast

كل الحلقات

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11 RNA Part 2 - Molecular Structure, Production And Processing 6:35

منذ 13 ساعة6:35

6:35

Join us in part two of our RNA series as we explore RNA’s structure and production process. Discover how RNA synthesis, or transcription, begins in the nucleus with RNA polymerase copying sections of DNA to form RNA strands. Follow along as we unpack mRNA processing steps—capping, tailing, and splicing—that prepare RNA for its critical role in protein creation. Understand RNA’s structure, including its ribose sugar and nitrogenous bases (Adenine, Cytosine, Guanine, and Uracil), and see why RNA’s reactivity makes it distinct from DNA. This episode clarifies RNA’s unique role in the cell, setting up our final episode, where we’ll focus on the primary RNA types and discuss the origins of the RNA-world hypothesis.…

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10 RNA, Part 1 - Structure, Functions And DNA-Distinctions 7:16

منذ 8 أيام7:16

7:16

Join BioSpeak for a look into RNA, the versatile nucleic acid that plays numerous critical roles in cells. Discover how RNA’s single-stranded structure and ribose sugar distinguish it from DNA, giving it unique flexibility and allowing it to perform diverse functions—from transferring genetic information and catalyzing reactions to regulating gene expression. We’ll break down the three components of RNA nucleotides: the phosphate group, ribose sugar, and nitrogenous bases (Adenine, Cytosine, Guanine, and Uracil) and discuss RNA’s role in protein synthesis, gene regulation, and even as the genetic material in some viruses. Learn the key distinctions between RNA and DNA, including the differences in sugar structure, base pairing, and stability. Tune in to understand RNA’s essential functions and its impact on cellular life.…

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09 DNA Part 2 - Molecular Structure 4:36

منذ 15 يومًا4:36

4:36

In part two of our DNA series on BioSpeak, we explore the molecular structure of DNA, focusing on nucleotides and their role in forming the double helix. This episode explains how DNA’s backbone is formed by bonds between deoxyribose sugars and phosphate groups, with hydrogen bonds enabling specific base pairing between Adenine, Cytosine, Guanine, and Thymine. We also describe how DNA grows in the 5’ to 3’ direction and how it compacts into chromosomes by wrapping around histones. Don’t miss this insightful look into the structure and organization of life’s genetic blueprint, with a surprising 99% DNA similarity shared among humans.…

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08 DNA Part 1 - Structure And Function 4:07

منذ 22 يومًا4:07

4:07

Tune into BioSpeak as we uncover DNA’s essential structure and its role in carrying genetic information across organisms. Discover how DNA’s double-helix structure, made of nucleotide building blocks, differs in eukaryotic and prokaryotic cells, where eukaryotic DNA forms linear strands while prokaryotic DNA is circular. Learn about DNA’s nucleotide composition, the “ladder” model, and how the molecule stores genetic code that directs protein synthesis. We’ll also discuss how DNA coils around histones to form chromosomes, enabling compact storage within cells. Get ready for an engaging introduction to DNA’s structure and vital functions in this first episode of a two-part series on life’s genetic blueprint.…

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07 The Nucleolus 3:32

منذ 29 يومًا3:32

3:32

In this episode of BioSpeak, we uncover the nucleolus's crucial role in cellular function. Discover how this specialized structure within the nucleus assembles ribosomes by synthesizing rRNA and integrating ribosomal subunits. Learn about its components—granular, fibrillar, and dense fibrillar—and how the nucleolar organizer region (NOR) initiates nucleolus formation. Explore the nucleolus’s critical role in protein synthesis and why it’s so significant to cell function, with emerging research linking nucleolar health to diseases like Huntington’s and cancer. Tune in to understand the nucleolus’s powerful impact on cellular life.…

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06 Nucleus, Cell Core 4:59

منذ عام واحد4:59

4:59

Join BioSpeak for an in-depth look at the nucleus, the "control center" of eukaryotic cells, where DNA is stored and cellular processes are directed. Discover the structure of the nuclear envelope, its protective role, and how nuclear pores control transport between the cell and the nucleus. We also discuss the nucleoplasm, which contains chromatin, and the nucleolus, where ribosome assembly begins. Learn about the nucleus’s vital functions, including gene expression, DNA replication, and how specialized cells like red blood cells adapt without a nucleus. Tune in to uncover the essential components and roles of the nucleus in cellular life.…

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05 Outer Cell Membrane 4:12

منذ عام واحد4:12

4:12

Join us in this episode of BioSpeak as we discover the structure and function of the outer cell membrane in Gram-negative bacteria. Learn how this crucial layer differs from the plasma membrane, serving as a protective moat composed of lipopolysaccharides (LPS) that shields the bacterial cell. We willl cover the significance of Lipid A and the O-antigen polysaccharide in immune responses and bacterial adaptability. Discover the role of porins as molecular gatekeepers, allowing nutrient transport, and efflux pumps that expel toxins from the cell. We’ll also discuss the implications of the outer cell membrane for antibiotic development and treatment strategies against Gram-negative bacterial infections.…

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