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2023-10-20   Video
Pyruvate Dehydrogenase

Keywords:

MALE: The product of glycolysis. The pyruvate molecule is the source of carbon and electrons for aerobic respiration reactions inside your mitochondria. Pyruvate enters pores on the mit...


2023-10-16   Video
ATP Synthesis

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All life on Earth depends on this tiny energetic molecule, adenosine triphosphate or ATP. ATP drives biochemical activity inside your living cells and is a key building block of DNA and RN...


2023-09-26   Video
Electron Transport Chain

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SPEAKER: The center of activity that brings your cells to life is found inside the dynamic mitochondria organelle. The inner mitochondrial membrane is coated with enzymes that catalyze th...


2023-09-22   Video
Biology of SARS-CoV-2 - Detection

Keywords:

SPEAKER: There are several ways to test whether someone has been infected with SARS COV-2. Some tests can detect if you have an active infection or an infection that is happening right ...


2023-09-10   Video
Biology of SARS-CoV-2 - Infection

Keywords:

SPEAKER: This is the virus SARS-CoV-2. Its name stands for Severe Acute Respiratory Syndrome Coronavirus 2. You may have heard it called just the coronavirus, or COVID-19. Coronaviru...


2023-09-09   Pre-Intermediate
The Short Story 'After Twenty Years,' by O.Henry

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The cop moved along the street, looking strong and important. This was the way he always moved. He was not thinking of how he looked. There were few people on the street to see him. It was only about ...


2023-09-06   Video
Photosynthesis- Part 7- Biosynthesis

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G3P, the net product from the Calvin cycle, can be used to generate other organic molecules, such as sucrose or starch. Sucrose produced by leaf cells is transported through the vascula...


2023-09-02   Video
Photosynthesis- Part 6- Calvin Cycle

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The Calvin cycle takes place in the chloroplast’s stroma, the watery clear fluid surrounding the thylakoids. It’s helpful to think of the Calvin cycle in three phases: fixation, reduction,...


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