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Living Factories
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Slide 1

Living Factories

Living Factories

Biotechnology

Slide 2

Saccharomyces cerevisiae

Saccharomyces cerevisiae

YEAST!!!

Slide 3

Yeast

Yeast

Single celled microorganism

Type of fungus

Exist on all living matter

16 chromosomes

Hundreds of different species!

Slide 4

Did you know?

Did you know?

We may not look much like yeast or they like us, but many of the 6,000 genes in yeast have counterparts in humans!

Slide 5

Looking at Yeast

Looking at Yeast

Slide 6

Yeast as a Living Organism

Yeast as a Living Organism

As a living organism, just like us, yeast needs the following to survive and flourish:

-sugars

-water

-warmth

Respiration is the process by which a living organism releases energy from its food

Slide 7

Do you remember the difference between aerobic and anaerobic respiration?

Do you remember the difference between aerobic and anaerobic respiration?

Slide 8

Aerobic Respiration

Aerobic Respiration

Humans produce energy through aerobic respiration

In aerobic respiration glucose reacts with oxygen in the mitochondria of the cells to release energy.

Carbon dioxide and water are by-products of the reaction.

Slide 9

Aerobic Respiration

Aerobic Respiration

Glucose + oxygen carbon dioxide

+ water + energy

Slide 10

Anaerobic Respiration

Anaerobic Respiration

Anaerobic respiration occurs when oxygen is not available.

In anaerobic respiration the glucose is only partially broken down, and lactic acid is produced

Slide 11

Fermentation

Fermentation

Living yeast cells in the absence of oxygen are still able to use sugar as their source of food to make energy

This is known as fermentation

In this case ethanol (alcohol) is produced instead of lactic acid

Slide 12

Anaerobic Respiration (Fermentation)

Anaerobic Respiration (Fermentation)

Glucose carbon dioxide

+ ethanol + energy

Slide 13

Aerobic Vs. Anaerobic Respiration

Aerobic Vs. Anaerobic Respiration

Aerobic

-oxygen always required

-efficient method of respiration

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