Skip to Main Content

Secondary Primary Home ☰

BIOLOGY11 Human use of biological & ethical processes: Bread, beer and yogurt

Cellular respiration in bread, beer and yogurt

Bread

The Chemistry of Bread-Making

The Chemistry of bread-making

Breaks the process of making bread down into 4 steps, and explains the chemistry at each step.

Source: Compound Interest, 2016, URL: https://www.compoundchem.com/2016/01/13/bread/

Anaerobic respiration by yeast - fermentation

In this video we are going to look at anaerobic respiration by yeast, and how it can be harnessed to produce food.

Source: YouTube, FuseSchool, 2020, Duration 3:52, URL: https://www.youtube.com/watch?v=mhwUc84xBZA

 

Fermentation

 

This video focuses on alcoholic fermentation and lactic acid fermentation, and it also mentions how this pathway is different from anaerobic cellular respiration.

Source: YouTube, Amoeba Sisters, 2018, Duration 8:34, URL: https://www.youtube.com/watch?v=YbdkbCU20_M

 

Beer

beer, mug, refreshment, beer mug, drink, bavaria, beer garden

Image source: https://www.hippopx.com/en/beer-mug-refreshment-beer-mug-drink-bavaria-beer-garden-388254 License to use Creative Commons Zero - CC0

Fermenting

Takes us through the chemical process of the third stage of brewing beer - fermentation.

Source: YouTube, Jason Carlson, 2015, Duration 2:17, URL: https://www.youtube.com/watch?v=2y5fyg9Zkp0

Anaerobic respiration and fermentation

Fermentation has two forms, as it can either result in the production of ethanol or lactate, and both of these processes are used industrially to make wonderful things like beer and wine and cheese.

Source: YouTube, Professor Dave Explains, 2020, Duration 7:35, URL: https://www.youtube.com/watch?v=bdzkbzscQm8

Yogurt

Free Images : fruit, berry, sweet, glass, summer, dish, meal, food, produce, fresh, healthy, snack, dessert, delicious, dairy product, yoghurt, nutrition, wooden, tasty, strawberries, vanilla, diet, organic, flavor, milk product, creamy yogurt,

Source: https://isappscience.org/advice-nutritionist-eat-fermented-foods/

Lactic acid fermentation | Cellular respiration | Biology

 

Exploring how the oxidation of co-enzymes like NADH to NAD+ can eventually lead to the production of ATP through oxidative phosphorylation and the electron transport chain.

Source: YouTube, Khan Academy, 2015, Duration 11:21, URL: https://www.youtube.com/watch?v=lfeXuK8pbFw

The fermentation process in yogurt

Jake describes the chemical changes that occur as growing bacteria transform milk into yogurt.

Source: YouTube, Synthetic Biology One, 2017, Duration 4:49, URL: https://www.youtube.com/watch?v=V4MuECi05hc