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Subscribe to the Nucleus Biology channel to see new animations on biology and other science topics, plus short quizzes to ace ...

Paul Andersen explains the major plants structures. He starts with a brief discussion of monocot and dicot plants. He then ...

UNLOCK YOUR BRAIN'S FULL POTENTIAL! My free 2-minute quiz reveals your unique "Brain Operating System" and gives you ...

After a polypeptide is produced in protein synthesis, it's not necessarily a functional protein yet! Explore protein folding that occurs ...

Hank introduces us to that wondrous molecule deoxyribonucleic acid - also known as DNA - and explains how it replicates itself in ...

We've got the skin covered, so now let's take a look at bones! These give structure to the body. Bone is a type of tissue, but an ...

Bacteria are prokaryotic cells that play an important role in human disease and health. They can cause disease but are also part ...

Learn about the structure of DNA and how to recognize all the parts in this video!

Besides providing structure and support for the body, and allowing for mobility, bones also protect various organs, produce blood ...

DNA stands for deoxyribonucleic acid. It is a type of nucleic acid, one of four major types of macromolecules which are essential ...

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Explore the detailed structure of skeletal muscle, including muscle fibers, myofibrils, sarcomeres, and associated connective ...

I'm Kati Morton, a licensed therapist making Mental Health videos! #katimorton #therapist #therapy MY BOOKS (in stores now) ...

This video explains the cell structure and function of each organelle for your Anatomy & Physiology class. I explain the function of ...

We've all seen pictures of chromosomes, and we know that they contain DNA. But how do we get from the double helix of DNA to ...

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: ...

Created by Tracy Kim Kovach. Watch the next lesson: ...

Cells for kids is an engaging and fun look at the function and structure of cells. In this video we compare the differences between ...

In this video, I review the structure of the eye. By Ronald Sahyouni. Created by Ronald Sahyouni. Watch the next lesson: ...

We've learned about bones and the skeletal system, but bones are so hard, so why are our bodies so bendy and flexible?