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BioTime

Christopher Jang

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Welcome to BioTime, a place for you to discover how our complex world works. From biology and chemistry crash courses to interviews with scientific researchers at the forefront of their field, this podcast hopes to help you not only learn more about the complexities of life but also gain an appreciation for the sciences. This podcast is hosted by Christopher Jang.
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From wound healing to cell growth to bone formation, fibroblast growth factors (FGF) and fibroblast growth factor receptors (FGFR) are responsible for a diverse range of biological processes. This episode begins with the basics: the functions of FGFs and FGFRs. We will then move on to an indepth dive into the structure of FGFRs and how they work wi…
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Cancer is a disease that has a chokehold on today’s society. With approximately 2 million new cancer diagnoses in the US every year paired with 10 million cancer-caused deaths worldwide, scientists have been struggling for centuries to find a cure. In today’s episode, we discuss the two main classes of genes that lead to cancer: proto-oncogenes and…
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When we think about the air surrounding us, we often relate this gaseous mixture to oxygen, the giver of life. However, there is another vital element in the air that we too often disregard: nitrogen. The Earth’s biosphere would be nothing without nitrogen. Life as we know it today would not exist if it were not for this element. This episode will …
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In society, we have many different people with different roles and ecological communities are no different. All organisms are interconnected through a complex web of interactions and a way we can describe the composition of species in a certain geographic location is to look at community structure. Today we will be exploring community structures, s…
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As humans, we walk, talk, run, and do an endless list of tasks a day, all of which require energy. Where is all of this power generated from? In this podcast, we will be discussing the structure of a mitochondrion, the function of a mitochondrion, and how cellular respiration takes place within the mitochondrion.…
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The Earth formed around 4.5 billion years ago. Over the past billions of years, evolution has greatly changed life as we see it today. If we transport ourselves back in time and look at cells, we will notice that they are extremely simple. But, in the present day, we notice that cells have become much more complicated beings with very complex proce…
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Our cells are very complicated and require and require many different enzymes, proteins, ions, and more in order to function properly. They need all of these different biological necessities to be at the right place and at the right time. How do our cells have so much control over all of these necessities? The answer lies in active and passive tran…
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Mendelian principles have served as a gateway into the functions of how our genetic information is passed on. Over time, we have discovered principles beyond mendelian genetics. In this episode, we review multiple alleles, incomplete dominance, and codominance. We discuss how they function and the examples of each form on inheritance. If you have a…
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In this podcast, a major organelle of the Endomembrane system is discussed, the Endoplasmic Reticulum. The episode opens with a discussion on the ER as a whole and then goes into detail on the structure and function of the ER's two counterparts, the smooth and rough ER. If you have any questions, feel free to send them to https://anchor.fm/christop…
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When we look at a species, oftentimes we notice that they do not all look exactly the same. Perhaps the color of their fur differs or the length of their legs varies. This variation is natural and is essential for survival. In this episode, we explore how this variation can be preserved in order to maintain a healthy population. The six mechanisms …
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Mutations are essential to the survival of organisms. It drives evolution, creating diversity. But, it also has its consequences. In this episode, we explore the benefits of mutations but also their pitfalls. We discuss gene mutations, chromosomal mutations, insertions, deletions, point mutations, and diseases caused by mutations.…
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What are the differences between Eukaryotes and Prokaryotes? This episode begins by discussing the essential components that all cells need and then transitions into in-depth explanations on Prokaryotes and Eukaryotes. The episode closes with a comparison between the two cell types. If you have any questions, feel free to send them to https://ancho…
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The world of science is advancing faster than ever, especially in biotechnology. With scientists pushing through the frontier, many innovations are being made and it is important to keep up. In today's episode, we will be discussing CRISPR, Polymerase Chain Reactions, Restriction Enzymes, Gel Electrophoresis, and DNA probes. Additionally, we will a…
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Water is essential to life on Earth. Without it, no life as we know it would exist today. Water has many essential properties that allow for it to sustain life on this Earth and this podcast goes into detail on the 5 major properties: high specific heat, high heat of vaporization, universal solvent, strong cohesion tension, and ice is less dense th…
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This podcast reviews environmental impacts on enzymes topic 3.3. Enzymes are incredibly important as they are what allow our bodies to complete the required reactions and keep us alive! We will be discussing denaturation and the three major environmental impacts on enzymes which are temperature, pH, and concentration of substrates and inhibitors.…
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One of the basic components that support life are macromolecules with the four being carbohydrates, lipids, proteins, and nucleic acids. This podcast dives into the structure, function, and application of all of these macromolecules. In addition, we will also be discussing dehydration synthesis, hydrolysis, monomers, and polymers in order to have e…
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Darwin's Theory of Natural Selection has served as a basis to this day for the reasoning behind evolution. It has assisted us to answer our largest questions concerning how and why species look the way they do. In this episode, we explore Darwin's voyage on the HMS Beagle, the five major points on his theory of natural selection, and Lamarck's view…
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Every living organism you have ever seen has been the result of evolution. If we were to look back on humans millions of years ago, we would have looked drastically different compared to how we look today. In this episode, we discuss the five main factors that contribute to evolution: Genetic drift, gene flow, mutations, non-random mating, and natu…
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The road to discovering the genetic material of cells, DNA, was a long journey. In this episode, we explore the three experiments that led to this discovery: The Griffith experiment, The Avery–MacLeod–McCarty experiment, and the Hershey Chase experiment. If you have any questions, feel free to send them to https://anchor.fm/christopher-jang/message…
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Cells live in an ever-changing environment, always needing to be aware of their surroundings and reacting to an organism's needs. In order to understand when to take action, cells must receive a message from the outside world in a process called reception. Reception is the first of three steps in cell signaling. In this episode, we review how signa…
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Vacuoles are an essential part of our endomembrane system. They deal with a variety of tasks like storage and getting rid of toxic waste! In this episode, we will explore the vacuole's structure and function. If you have any questions, feel free to send them to https://anchor.fm/christopher-jang/message or https://2255christopher.wixsite.com/biotim…
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Lysosomes, an essential part of the endomembrane system, are reviewed in this episode. The podcast opens by discussing the structure and then transitions into a thorough explanation of the functions of a lysosome. Finally, the episode quickly gives a short review on Tay-Sachs disease. If you have any questions, feel free to send them to https://anc…
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In this episode, we review a major organelle of the endomembrane system, the Golgi Apparatus. The podcast explores the structure, function, and how the cisternal maturation model works in complete detail. If you have any questions, feel free to send them to https://anchor.fm/christopher-jang/message or https://2255christopher.wixsite.com/biotime/qu…
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