Bio 101 intermediate

BIO 101: Basic cell biology

Free study notes for BIO 101 (BIO101) — Basic cell biology, one topic at a time, each with worked examples and a practice quiz.

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Course Syllabus

  1. Introduction to Cell Biology and Basic Chemistry
  2. Cellular Structures and Organelles (Prokaryotic vs. Eukaryotic)
  3. Cellular Transport Mechanisms
  4. Cellular Energy (Metabolism)
  5. Cell Division and Cell Cycle
  6. Cell Signaling and Communication
  7. Introduction to Genetics and Gene Expression

Study Notes

Cellular Energy (Metabolism)

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When we talk about cellular energy, we're mostly focusing on catabolism, specifically how cells extract energy from glucose (a simple sugar). The goal is to produce ATP (Adenosine Triphosphate), which is like the cell's rechargeable battery. When ATP releases a phosphate group, it becomes ADP (Adenosine Diphosphate) and releases energy for cellular work. Then, ADP can be recharged back into ATP.

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Introduction to Genetics and Gene Expression

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A gene is a specific segment of DNA that contains instructions for making a particular protein or functional RNA molecule. These proteins then carry out most of the work in cells and are responsible for the structure, function, and regulation of the body's tissues and organs.

So, how do the instructions in a gene turn into a protein? That's where gene expression comes in. It's a two-step process:

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BIO 101: common questions

What does BIO 101 cover?

This BIO 101 study guide covers 7 topics: Introduction to Cell Biology and Basic Chemistry, Cellular Structures and Organelles (Prokaryotic vs. Eukaryotic), Cellular Transport Mechanisms, Cellular Energy (Metabolism), Cell Division and Cell Cycle, Cell Signaling and Communication, Introduction to Genetics and Gene Expression.

Are these BIO 101 notes free?

Yes. Every BIO 101 note on this page is free to read without an account. A free account adds practice quizzes, flashcards and a revision plan.

How do I revise for my BIO 101 exam?

Read the BIO 101 note for each topic, then take its practice quiz: the questions you get wrong come back as flashcards until you know them. Save the course to get a revision plan built around your exam date.