Microbiology

Question 0

What is yeast?

Answer 0

Yeast is a unicellular fungi

Question 1

What two industries is yeast used in?

Answer 1

Brewing and baking

Question 2

What makes the dough rise?

Answer 2

CO2

Question 3

What is the equation for anaerobic respiration or fermentation for yeast/plant cells?

Answer 3

Glucose—> 2ATP + ethanol + CO2

Question 4

In bread making what happens to the ethanol?

Answer 4

It evaporates

Question 5

What is this called:

Starch—->maltose

Answer 5

Malting

Question 6

What does germinating mean?

Answer 6

Growing

Question 7

What two industries is bacteria used in?

Answer 7

Food

Sewage

Question 8

What food does bacteria make?

Answer 8

Cheese and yoghurt

Question 9

What causes the milk to curdle?

Answer 9

Lactic acid

Question 10

What is the liquid part of the milk called?

Answer 10

Whey

Question 11

What is the solid part of the milk called?

Answer 11

Curds

Question 12

What is the equation for lactic acid fermentation?

Answer 12

Lactose(sugar from milk) =

2atp +lactic acid

Question 13

Name the sewage processes that bacteria is involved in

Answer 13

Biological filtration

Activated sludge

Question 14

Describe biological filtration

Answer 14

The bacteria in the rocks eat the sewage that is sprayed onto the rocks in aerobic conditions and turn it into carbon dioxide and water

Question 15

Describe activated sludge

Answer 15

The sewage is mixed with bacteria, the mix has air bubbles blown through it and the bacteria digest the sewage turning into harmless co2 and water