Anaerobic Respiration Lab Essay

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Pages: 3
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Steven Chau
Jason Ly
Thompson Wu I. VI.

Title ­ Anaerobic Respiration Root Beer Lab
Observations
Balloon Measurements Table

Bottle One

Vertical
Circumference
(cm)

Horizontal
Circumference
(cm)

Average
Circumference
(cm)

Radius c ( r
= 2π
)

Day 2

Not Inflated

Not Inflated

Not Inflated

Not Inflated

Not Inflated

Day 3

Not Inflated

Not Inflated

Not Inflated

Not Inflated

Not Inflated

Bottle 2

Vertical
Circumference
(cm)

Horizontal
Circumference
(cm)

Average
Circumference
(cm)

Day 2

Not Inflated

Not Inflated

Not Inflated

Not Inflated

Day 3

16.0 cm

14.5 cm

15.3 cm

2.40 cm

Bottle 3

Vertical
Circumference
(cm)

Horizontal
Circumference
(cm)

Average
Circumference
(cm)

Day 2

14.5 cm

13.0 cm

13.8 cm

2.20 cm

3
44.6 cm

Day 3

15.0 cm

13.0 cm

14.0 cm

2.23 cm

3
46.5 cm

Radius c ( r
= 2π
)

Radius c ( r
= 2π
)

Volume
4
( v
= 3 π r3
)

Volume
4
( v
= 3 π r3
)
Not Inflated
3
57.9 cm

Volume
4
( v
= 3 π r3
)

VII.

Conclusion
The balloon of Bottle 1 was never inflated due to the bottle not containing yeast.
Same as Bottle 2 on the second day, however on the third day of fermentation the balloon of Bottle 2, containing 1/16 teaspoons of yeast, was inflated with an
3
average circumference of 15.3 cm, a radius of 2.4 cm, and a volume of 57.9 cm
.
Lastly on the second day of fermentation of Bottle 3 which had 1/8 teaspoon of yeast added had an average circumference of 13.8 cm, a radius of 2.2 cm, and a

Steven Chau
Jason Ly
Thompson Wu
3
volume of 44.6 cm
, while on the third day of fermentation the balloon had an
3
average circumference of 14 cm, a radius of 2.23 cm, and a volume of 46.5 cm
.
The “root beer” of Bottle 1 tasted root beer flavored dumdums because the “root beer” was just flavored sugar water without the gas. Bottle 2 had lots of CO in
2
the “root beer”, and as a result tasted very carbonated and tasted like grape medicine. Bottle 3 tasted like alcoholic drinks due to having the most yeast added to the bottle. Bottle 1 smelled like actually root beer, because there was no smelled of yeast. Bottle 2 also smelled similar to root beer with actual gas and a little acidic because of the yeast. Bottle 3 smelled like Asian back rubbing medicine, and smelled very bad and nothing like real root beer.

Bottle 2, with 1/16 of a teaspoon of yeast, produced the most amount of CO
2
3 because the balloon was inflated to the largest volume of 57.9 cm
. Compared to
Bottle 1, which had no volume because the balloon did not inflate, and Bottle 3,
3
which had a volume of 46.5 cm
. Bottle 1 had no amount of yeast added,
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