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Unit 1 Intro to biology. Unit 2 Chemistry of life. Unit 3 Water, acids, and bases. Unit 4 Properties of carbon. Unit 5 Macromolecules. Unit 6 Elements of life. Unit 7 Energy and enzymes. Unit 8 Structure of a cell. Unit 9 More about cells.
Aug 21, 2018 · Learn the basics of biology, such as life, cells, genes, evolution and homeostasis. Explore the fields and branches of biology with examples and resources.
May 8, 2024 · Learn the basics of biology and earn transferable credit with this self-paced course. Explore topics such as molecular biology, cell structure, genetics, evolution, ecology and more.
Our goal is to make learning biology an exciting and accessible experience for everyone, from curious students to lifelong learners.
Learn the basics of biology, from molecules and cells to evolution and natural selection, with this video from Khan Academy. Watch the video and test your knowledge with questions and comments from other learners.
- 5 min
- Sal Khan
- A virus reproduces by hijacking a cell, taking over its machinery, and forcing it to make new viruses. When the poor cell has made so many new viru...
- Why do you assume the material is inanimate? All the atoms and molecules that we are composed of appear to be reacting according to the laws of phy...
- Viruses are kind of the 'zombies' of the cell world - they are only active and able to reproduce if they have infected an organism. Outside of an o...
- He means that everything is made up of cells--plants, animals, humans, everything. It's kind of like saying that legos are the building blocks of L...
- Possibly bio-weapons, or making more questions than answers. also problems too.
- No Mark..a virus is not a living thing, it's just a complex molecule composed of different types of proteins, nucleic acids and carbs. So the virus...
- Earth was able to support life only after the planet had cooled enough for a rocky crust to solidify. Once that happened, water vapor from volcanoe...
- The classification of subdisciplines and interdisciplines it consists of is extensive. I think this may help you have one glance at a time: http://...
- Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, and each set ends...
Biology is the study of life—a four-letter word that connects you to 4 billion years worth of family tree. The word “life” can be tricky to define, but a sha...
- 13 min
- 419.4K
- CrashCourse
Learn the basic principles of biochemistry, molecular biology, genetics, and recombinant DNA with MIT faculty and teaching assistants. This course is designed for independent study and consists of four units with lecture videos, problem sets, quizzes, exams, and more.
