EXPERIMENT 9

Question 1

are Living organisms that help in fermentation

Answer 1

yeast

Question 2

Provides nitrogen which serves as nutrition for yeasts

Answer 2

Pasteur’s salt solution

Question 3

Produced when yeast and Pasteur’s salt solution are added to sugars

Answer 3

Carbon Dioxide (CO2) and Ethyl Alcohol (CH3CH2OH)

Question 4

Catalyzes the fermentation of sugar into carbon dioxide and ethanol

Answer 4

Zymase

Question 5

Causes hydrolysis of sugar solution to glucose and fructose

Answer 5

Invertase

Question 6

act as catalytic substance speeding certain chemical reactions

Answer 6

enzymes

Question 7

what are the two test conducted for the fermentation?

Answer 7

Iodoform test and benedict’s test

Question 8

what test detects the presence of sugar? what is its indicator if its completed and not completed?

Answer 8

Benedict’s test, Completed no presence of Cu2O and if its incomplete presence Cuprous oxide (red precipitate)

Question 9

used to test for presence of ethyl alcohol, what is its product?

Answer 9

iodoform test

Question 10

are enzymes produced by yeast?

Answer 10

zymase and invertase