2.8 Cellular Respiration
IB Syllabus Statements
Understandings:
-
Cell respiration is the controlled release of energy from organic compounds to produce ATP.
-
ATP from cell respiration is immediately available as a source of energy in the cell.
-
Anaerobic cell respiration gives a small yield of ATP from glucose.
-
Aerobic cell respiration requires oxygen and gives a large yield of ATP from glucose.
Applications and skills:
-
Application: Use of anaerobic cell respiration in yeasts to produce ethanol and carbon dioxide in baking.
-
Application: Lactate production in humans when anaerobic respiration is used to maximize the power of muscle contractions.
-
Skill: Analysis of results from experiments involving measurement of respiration rates in germinating seeds or invertebrates using a respirometer.
Videos
Cellular Respiration Part 1 Intro
Why Bother with Anaerobic Respiration
Using Yeast in Baking and Brewing
Respirometer Experiments and Ethics
Analysis of Respirometer Experiments
Quizlet yourself!
Flashcards
Learn
Test
Topic 2.8 Cell respiration SSaQ (Syllabus Statement as Questions)
-
Define cell respiration.
-
What is the role of ATP in a cell?
-
Briefly outline the differences between anaerobic respiration and aerobic respiration in term of oxygen requirement and ATP yield.
-
Outline how anaerobic respiration is used in yeast to produce ethanol and carbon dioxide in baking.
-
Explain the production of lactate in humans, and why it is sometime necessary to produce this substance.
-
Explain how you would use a respirometer to measure respiration rates in germinating seeds or invertebrates.
-
What kind of substance would you use in an experiment to absorb carbon dioxide? Why would you need to do this in a respiration experiment?
-
Why should temperatures be kept constant in respiration experiments?
-
Outline the ethical implications of using invertebrates in respirometer experiments.