← Back to the Introduction to Biology outline The Course Maker
← Introduction to Biology outline
Week 6 · Module overview

Week 6 — Cellular Respiration

Introduction to Biology Free sample edition

Why this matters

A nursing student wondering why someone breathes harder during exercise and a baker waiting for dough to rise are both watching cells turn sugar into ATP.

In plain language

Every minute of your life, your cells take apart sugar and use the energy inside it to recharge their ATP. This week you follow that sugar from start to finish. You will meet cellular respiration (the chemistry inside your cells that turns food energy into ATP), which is a different thing from breathing. You will walk its four stages in order and learn the place in the cell where each one runs, because in biology the order and the place are facts you can be graded on. Finally, you will meet fermentation (the backup a cell uses when oxygen runs out), the same process that makes bread rise.

  • Already covered: Week 1 taught you to read a controlled experiment; Week 2 gave you chemical formulas; Week 3 introduced glucose; Week 4 toured the mitochondrion; Week 5 showed you ATP and enzymes.
  • This week: cellular respiration, its four stages and their locations, the ATP it makes, and fermentation when oxygen runs out.
  • How they connect: each stage is a chain of enzyme-run reactions from Week 5, it happens in the cell parts you toured in Week 4, and its fuel is the glucose you met in Week 3.
  • Where we're going next: Week 7, Photosynthesis, runs a near-mirror image of this pathway, building sugar from carbon dioxide and water with light.

Focus

In what order does a cell turn sugar into ATP, and where does each step happen?

By the end of this module, you should be able to:

  • [ ] tell cellular respiration apart from breathing
  • [ ] list the four stages in order, each with its place in the cell
  • [ ] explain why oxygen matters only at the end of the chain
  • [ ] compute the yeast balloon increments and explain fermentation's small payoff

To-do

Plan your week

  1. Read Chapter 6 (about 45 minutes), then the lecture and slides.
  2. Work the lecture tutorial (60–90 minutes) and the practice set (about 20 minutes).
  3. Run the Biology Lab & Inquiry (about 2 hours), then the discussion and the assignment.
  4. Take the quiz.

This week's checkpoint: name the four stages of cellular respiration in order, with the place each one runs.

You've got this

Take it in order; ask your instructor if a step snags.

Built with The Course Maker · samples.thecoursemaker.com